@article{AbelsSchuetz, author = {Abels, Simone and Sch{\"u}tz, Sandra}, title = {"Fachdidaktik trifft Inklusive P{\"a}dagogik"}, series = {Zeitschrift f{\"u}r Heilp{\"a}dagogik}, volume = {67}, journal = {Zeitschrift f{\"u}r Heilp{\"a}dagogik}, number = {9}, pages = {425 -- 436}, language = {de} } @misc{AdlerFoerstlSuessetal., author = {Adler, Ina and F{\"o}rstl, Nikolas and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Biomechanical exposition of the factors influencing the pelvic floor muscle activity}, series = {ESB 2024, 29th Congress of the European Society of Biomechanics, 30 June-3 July 2024, Edinburgh, Scotland}, journal = {ESB 2024, 29th Congress of the European Society of Biomechanics, 30 June-3 July 2024, Edinburgh, Scotland}, abstract = {Introduction About 40 \% of the women worldwide suffer from Pelvic Floor Dysfunctions [1]. In previous studies, musculoskeletal simulations helped to understand and facilitate the complex issues of musculoskeletal disorders in several different branches [2, 3]. A fundamental prerequisite for the generation of these models is to have a basic understanding of the stresses acting on the pelvic floor. The aim of this study is to investigate the biomechanical factors influencing the activity of the pelvic floor muscles by establishing a parameterised model. Methods To identify the factors that affect the pelvic floor muscles, the process is divided into several stages. The first step is to investigate the loads acting on the pelvic floor. For this, a simplified sagittal cross-sectional model of the upper body is analysed. The discretization of the abdominal cavity is presented with resulting force vectors representing the organs in the abdominal and pelvic region, the tensile force of the structures that fixate the organs as well as the intraabdominal pressure. A second step is the examination of the basic mechanics of the pelvic floor muscles. As the functional anatomy of these muscles demonstrate differences compared to other muscle groups [4], the understanding of how they differ is crucial for the construction of musculoskeletal models. After a static examination of loads on a simplified muscle model, an extended model including the physiological properties of a muscle must be involved in the considerations. Therefore, the influence of parameters such as the ideal muscle strength and fibre length, as well as elasticity or passive stiffness of the elements must be taken into account. The influencing factors of the variables can be analysed in a simplified pelvic floor muscle model by systematically changing the parameters. Results The process of analysing the factors influencing the activity of the pelvic floor muscles follows two main strategies. The review of the effects of the whole body identifies the forces acting on the pelvic floor muscles and effect their activity. With the examination of the basic mechanics of a simplified pelvic floor muscle model a better understanding is achieved of how the pelvic floor muscles absorb the loads acting in the body. Discussion This process results in the main influence factors on the activity of the pelvic floor. The consequent parameters form the basis for a biomechanically justified construction of musculoskeletal simulation models of the pelvic floor. Nevertheless, it must be considered, that these mechanical studies represent simplifications of the reality. References 1. Wang et al, Front Public Health, 10:975829, 2022. 2. Bulat et al., Curr Sports Med Rep, 18(6):210-216, 2019 3. Melzner et al., Eur J Obstet Gynecol Reprod Biol, 264:306-313, 2021 4. Ashton-Miller et al., Ann N Y Acad Sci, 1101:266-96, 2007}, language = {en} } @article{AfonsoPereiraWeberetal., author = {Afonso, Luis Claudio Sugi and Pereira, Clayton R. and Weber, Silke A. T. and Hook, Christian and Falc{\~a}o, Alexandre X. and Papa, Joao Paulo}, title = {Hierarchical learning using deep optimum-path forest}, series = {Journal of Visual Communication and Image Representation}, volume = {71}, journal = {Journal of Visual Communication and Image Representation}, number = {August}, publisher = {Elsevier}, doi = {10.1016/j.jvcir.2020.102823}, abstract = {Bag-of-Visual Words (BoVW) and deep learning techniques have been widely used in several domains, which include computer-assisted medical diagnoses. In this work, we are interested in developing tools for the automatic identification of Parkinson's disease using machine learning and the concept of BoVW. The proposed approach concerns a hierarchical-based learning technique to design visual dictionaries through the Deep Optimum-Path Forest classifier. The proposed method was evaluated in six datasets derived from data collected from individuals when performing handwriting exams. Experimental results showed the potential of the technique, with robust achievements.}, language = {en} } @article{AfonsoRosaPereiraetal., author = {Afonso, Luis Claudio Sugi and Rosa, Gustavo H. and Pereira, Clayton R. and Weber, Silke A. T. and Hook, Christian and Albuquerque, Victor Hugo C. and Papa, Joao Paulo}, title = {A recurrence plot-based approach for Parkinson's disease identification}, series = {Future generation computer systems - The international journal of escience}, volume = {94}, journal = {Future generation computer systems - The international journal of escience}, number = {May}, publisher = {Elsevier}, doi = {10.1016/j.future.2018.11.054}, pages = {282 -- 292}, abstract = {Parkinson's disease (PD) is a neurodegenerative disease that affects millions of people worldwide, causing mental and mainly motor dysfunctions. The negative impact on the patient's daily routine has moved the science in search of new techniques that can reduce its negative effects and also identify the disease in individuals. One of the main motor characteristics of PD is the hand tremor faced by patients, which turns out to be a crucial information to be used towards a computer-aided diagnosis. In this context, we make use of handwriting dynamics data acquired from individuals when submitted to some tasks that measure abilities related to writing skills. This work proposes the application of recurrence plots to map the signals onto the image domain, which are further used to feed a Convolutional Neural Network for learning proper information that can help the automatic identification of PD. The proposed approach was assessed in a public dataset under several scenarios that comprise different combinations of deep-based architectures, image resolutions, and training set sizes. Experimental results showed significant accuracy improvement compared to our previous work with an average accuracy of over 87\%. Moreover, it was observed an improvement in accuracy concerning the classification of patients (i.e., mean recognition rates above to 90\%). The promising results showed the potential of the proposed approach towards the automatic identification of Parkinson's disease.}, language = {en} } @inproceedings{AlMunajjedNolteRasmussenetal., author = {Al-Munajjed, Amir Andreas and Nolte, Daniel and Rasmussen, John and Dendorfer, Sebastian}, title = {Force distribution in the foot during braking - a musculoskeletal approach}, series = {Human Modeling Symposium 2014, Munich, Germany}, booktitle = {Human Modeling Symposium 2014, Munich, Germany}, abstract = {High loads can appear in the individual joints of the human foot while the driver uses the pedals, in particular, during breaking. Measuring these internal forces is very difficult or almost impossible; therefore, advanced models are necessary to perform musculoskeletal simulations. The objective of this investigation was to see what loads are acting in the individual foot joints from the phalanges to calcaneus and talus during different brake scenarios. The Glasgow-Maastricht AnyBody Foot Model with 26 separate segments, connected by joints, ligaments and muscles was used inside the AnyBody Modeling System to compute individual mid foot joint loads. The amount, the direction of the force and additionally also the load insertion point was varied for several simulations. Figure 1: Seated musculoskeletal body model with applied brake force and forces for the lateral, intermediate and medial cuneiform-navicular joint for two different brake forces. The simulation showed that for the different brake scenarios, different muscles will be activated in the human and therefore different loads are apply in the fore-and mid-foot, respectively. The torso of the subject was assumed to be fixed in the seat. Further studies are ongoing to simulate the seat as an elastic element that allows different H-point locations according to the different loadings in the foot from the brake pedal using a new inverse dynamics analysis method called force-dependent kinematics.}, language = {en} } @techreport{AlexEichingerHeyderetal., type = {Working Paper}, author = {Alex, Karla and Eichinger, Johanna and Heyder, Clemens and Kandlbinder, Agnes and Loder, Sandra and Rolfes, Vasilija and R{\"o}ttger, Sara and Scharf, Anna and Scorna, Ulrike and Weigold, Stefanie}, title = {Abstractband I: In-vitro-Gametogenese (IVG) und artifizieller Uterus (AU) - Problemausl{\"o}ser oder Probleml{\"o}ser? Ethische, soziale und rechtliche Aspekte zuk{\"u}nftiger reproduktionsmedizinischer Verfahren}, editor = {Cerullo, Laura and Gerhards, Helene and Weber, Karsten}, doi = {10.13140/RG.2.2.30303.53928}, pages = {21}, language = {de} } @inproceedings{AliAhmmedAlEmranetal., author = {Ali, Md. Wajed and Ahmmed, Tanvir and Al Emran, Md and Roy, Dipon and Refat, Kawsar Ahmed and Khan, Robiul}, title = {Driver Fatigue Detection using CWT-Extracted Features and a Deep Learning Approach (CNNLSTM)}, series = {2024 IEEE International Conference on Biomedical Engineering, Computer and Information Technology for Health (BECITHCON), 28-29 Nov. 2024, Dhaka, Bangladesh}, booktitle = {2024 IEEE International Conference on Biomedical Engineering, Computer and Information Technology for Health (BECITHCON), 28-29 Nov. 2024, Dhaka, Bangladesh}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {979-8-3315-3435-6}, doi = {10.1109/BECITHCON64160.2024.10962632}, pages = {77 -- 82}, abstract = {Driver fatigue is a leading reason behind traffic accidents globally, resulting in significant threats to public safety and substantial economic costs. Electroencephalography (EEG) has shown to be a critical tool for identifying driver fatigue as it can record brain activity associated with sleepiness, which gives it an advantage over other physiological modalities. Although raw EEG data can provide insightful information, accurate fatigue identification requires strong feature extraction techniques because of the inherent complexity of the data. This emphasizes how urgent it is to investigate revolutionary deep-learning architectures that can successfully extract discriminative features from raw EEG data. This study provides an innovative framework for driver fatigue identification from EEG that combines continuous wavelet transform (CWT) with convolutional neural networks (CNN) and long-short term memory (LSTM). In order to gain the advantage over the drawbacks of manual feature extraction, this study generates time-frequency spectrum representations of EEG data using the CWT. Following extracting information, each channel's time-frequency images are concatenated and fed into a CNN-LSTM architecture. This combination models the temporal and spatial characteristics of the EEG data and automatically learns discriminative features for identifying drivers' normal and fatigued states. A publicly available EEG dataset with recordings from twelve subjects is used to evaluate the proposed CWT-CNN-LSTM architecture. The result shows a prominent classification accuracy of 98.34\% for both the average of each subject and combined subjects. These findings show how well the CNN-LSTM framework captures EEG patterns associated with fatigue, which may result in more reliable driver fatigue detection systems and improved traffic safety.}, language = {en} } @unpublished{AllanKondoBodenstedtetal., author = {Allan, Max and Kondo, Satoshi and Bodenstedt, Sebastian and Leger, Stefan and Kadkhodamohammadi, Rahim and Luengo, Imanol and Fuentes, Felix and Flouty, Evangello and Mohammed, Ahmed and Pedersen, Marius and Kori, Avinash and Alex, Varghese and Krishnamurthi, Ganapathy and Rauber, David and Mendel, Robert and Palm, Christoph and Bano, Sophia and Saibro, Guinther and Shih, Chi-Sheng and Chiang, Hsun-An and Zhuang, Juntang and Yang, Junlin and Iglovikov, Vladimir and Dobrenkii, Anton and Reddiboina, Madhu and Reddy, Anubhav and Liu, Xingtong and Gao, Cong and Unberath, Mathias and Kim, Myeonghyeon and Kim, Chanho and Kim, Chaewon and Kim, Hyejin and Lee, Gyeongmin and Ullah, Ihsan and Luna, Miguel and Park, Sang Hyun and Azizian, Mahdi and Stoyanov, Danail and Maier-Hein, Lena and Speidel, Stefanie}, title = {2018 Robotic Scene Segmentation Challenge}, doi = {10.48550/arXiv.2001.11190}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-50049}, pages = {11}, abstract = {In 2015 we began a sub-challenge at the EndoVis workshop at MICCAI in Munich using endoscope images of exvivo tissue with automatically generated annotations from robot forward kinematics and instrument CAD models. However, the limited background variation and simple motion rendered the dataset uninformative in learning about which techniques would be suitable for segmentation in real surgery. In 2017, at the same workshop in Quebec we introduced the robotic instrument segmentation dataset with 10 teams participating in the challenge to perform binary, articulating parts and type segmentation of da Vinci instruments. This challenge included realistic instrument motion and more complex porcine tissue as background and was widely addressed with modfications on U-Nets and other popular CNN architectures [1]. In 2018 we added to the complexity by introducing a set of anatomical objects and medical devices to the segmented classes. To avoid over-complicating the challenge, we continued with porcine data which is dramatically simpler than human tissue due to the lack of fatty tissue occluding many organs.}, subject = {Minimal-invasive Chirurgie}, language = {en} } @incollection{AltenbuchnerHaugKretschmeretal., author = {Altenbuchner, Amelie and Haug, Sonja and Kretschmer, Rainer and Weber, Karsten}, title = {How to Measure Physical Motion and the Impact of Individualized Feedback in the Field of Rehabilitation of Geriatric Trauma Patients}, series = {Health Informatics Meets eHealth}, booktitle = {Health Informatics Meets eHealth}, doi = {10.3233/978-1-61499-858-7-226}, pages = {226 -- 232}, abstract = {Background: This preparatory study accelerates an implementation of individualized monitoring and feedback of physical motion using conventional motion trackers in the rehabilitation process of geriatric trauma patients. Regaining mobility is accompanied with improved quality of life in persons of very advanced age recovering from fragility fractures. Objectives: Quantitative survey of regaining physical mobility provides recommendations for action on how to use motion trackers effectively in a clinical geriatric setting. Methods: Method mix of quantitative and qualitative interdisciplinary and mutual complementary research approaches (sociology, health research, philosophy/ethics, medical informatics, nursing science, gerontology and physical therapy). While validating motion tracker use in geriatric traumatology preliminary data are used to develop a target group oriented motion feedback. In addition measurement accuracy of a questionnaire about quality of life of multimorbid geriatric patients (FLQM) is tested. Conclusion: Implementing a new technology in a complex clinical setting needs to be based on a strong theoretical background but will not succeed without careful field testing.}, language = {en} } @misc{AltenbuchnerHaugMohretal., author = {Altenbuchner, Amelie and Haug, Sonja and Mohr, Christa and Scorna, Ulrike and Weber, Karsten}, title = {The impact of nurse advisors and online advice services on treatment adherence in multiple sclerosis (MS)}, series = {7th Joint European Committee for Treatment and Research in Multiple Sclerosis - Americas Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS-ACTRIMS), 25.-27.10.2017, Paris}, journal = {7th Joint European Committee for Treatment and Research in Multiple Sclerosis - Americas Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS-ACTRIMS), 25.-27.10.2017, Paris}, language = {en} } @misc{AltenbuchnerHaugMohretal., author = {Altenbuchner, Amelie and Haug, Sonja and Mohr, Christa and Scorna, Ulrike and Weber, Karsten}, title = {Methodenbericht einer Evaluation der Multiprofessionalit{\"a}t in der Behandlung von MS}, series = {Forschungswelten 2018. 9. Internationaler wissenschaftlicher Kongress f{\"u}r Pflege- und Gesundheitsforschung, 19.-20.04.2018, St. Gallen}, journal = {Forschungswelten 2018. 9. Internationaler wissenschaftlicher Kongress f{\"u}r Pflege- und Gesundheitsforschung, 19.-20.04.2018, St. Gallen}, language = {de} } @article{AltenbuchnerHaugMohretal., author = {Altenbuchner, Amelie and Haug, Sonja and Mohr, Christa and Scorna, Ulrike and Weber, Karsten}, title = {Methodenbericht einer Mixed-Method Evaluation von Multiprofessionalit{\"a}t in der Behandlung von Multipler Sklerose (MS)}, series = {Pflegewissenschaft - Journal f{\"u}r Pflegewissenschaft und Pflegepraxis}, volume = {20}, journal = {Pflegewissenschaft - Journal f{\"u}r Pflegewissenschaft und Pflegepraxis}, number = {11-12}, issn = {1422-8629}, pages = {523 -- 524}, abstract = {Therapieabbruch oder -unterbrechung erh{\"o}hen das Risiko von Krankheitssch{\"u}ben in der MS-Behandlung (Ennis et al., 2008). Der Abbruchanteil f{\"u}r die immunmodulatorische Basistherapie mit COPAXONE® betrug 2008 in den ersten drei Monaten bis zu 30 \% (COPAKTIV Schwestern-Service, 2008), worauf das Aktiv-mit-MS-Patientenbetreuungsprogramm, eine begleitende pflegerische Fachberatung und ein Servicetelefon, installiert wurde. Die Auswirkungen der Zusammenarbeit innerhalb des Teams und mit {\"A}rzt/innen sowie die peer-to-peer Beratung in einem Online-Forum auf Therapietreue und Krankheitsbew{\"a}ltigung der Patient/innen wurde im L{\"a}ngsschnitt untersucht. Ein Methoden-Mix wurde erfolgreich zur Evaluation der pflegerischen Multiprofessionalit{\"a}t eingesetzt. Es zeigte sich, dass die Angebote im Betreuungsprogramm zu einer Verminderung der Abbruchquote f{\"u}hrten und die Patient/innen eine gute Therapietreue einhalten.}, language = {de} } @article{AltenbuchnerHaugSchnelletal., author = {Altenbuchner, Amelie and Haug, Sonja and Schnell, Rainer and Scharf, Anna and Weber, Karsten}, title = {Impfbereitschaft von Eltern mit einem COVID-19-Vakzin}, series = {P{\"a}diatrie \& P{\"a}dologie. {\"O}sterreichische Zeitschrift f{\"u}r Kinder- \& Jugendheilkunde}, volume = {56}, journal = {P{\"a}diatrie \& P{\"a}dologie. {\"O}sterreichische Zeitschrift f{\"u}r Kinder- \& Jugendheilkunde}, number = {5}, publisher = {Springer Nature}, doi = {10.1007/s00608-021-00925-2}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-196}, pages = {230 -- 234}, abstract = {Hintergrund: Eltern stehen im Rahmen der eigenen Impfung und der Kinderimpfung mit einem COVID-19-Vakzin vor einer Impfentscheidung. Zum aktuellen Zeitpunkt gibt es keine (vollst{\"a}ndige) Impfempfehlung. Fragestellung: Die Studie untersucht die Impfbereitschaft von Eltern minderj{\"a}hriger Kinder und Personen ohne minderj{\"a}hrige Kinder, wobei insbesondere Geschlechtsunterschiede {\"u}berpr{\"u}ft werden. Methoden: Die Studie basiert auf einer Zufallsstichprobe (Telefon-Survey, n = 2014, Erhebung zwischen 12.11.2020 und 10.12.2020). Die Auswertung st{\"u}tzt sich insbesondere auf die Teilstichprobe von Personen mit minderj{\"a}hrigen Kindern im Haushalt (n = 461). Ergebnisse: Eltern weisen durchg{\"a}ngig eine geringere Impfbereitschaft mit einem COVID-19-Vakzin auf als Befragte ohne minderj{\"a}hrige Kinder (54,1 \% vs. 71,1 \%). V{\"a}ter weisen eine st{\"a}rker ausgepr{\"a}gte eigene Impfbereitschaft auf als M{\"u}tter. Dar{\"u}ber hinaus sind M{\"a}nner eher als Frauen bereit, das eigene Kind mit einem COVID-19-Vakzin impfen zu lassen. Schlussfolgerungen: Bei Eltern und insbesondere M{\"u}ttern ist eine erhebliche Fehleinsch{\"a}tzung von Impfrisiken und h{\"a}ufiger Glaube an Impfverschw{\"o}rungstheorien zu beobachten. Empfohlen werden anschauliche und leicht verst{\"a}ndliche Informationen {\"u}ber die Wirkung und Nebenwirkungen der Impfung mit einem COVID-19-Vakzin durch zust{\"a}ndige Institutionen und {\"A}rzte.}, language = {de} } @article{AltenbuchnerHaugWeber, author = {Altenbuchner, Amelie and Haug, Sonja and Weber, Karsten}, title = {Die ersten Schritte nach einer h{\"u}ftnahen Fraktur}, series = {Zeitschrift f{\"u}r Gerontologie und Geriatrie}, volume = {54}, journal = {Zeitschrift f{\"u}r Gerontologie und Geriatrie}, publisher = {Springer Nature}, issn = {0948-6704}, doi = {10.1007/s00391-021-01861-3}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-14251}, pages = {555 -- 560}, abstract = {Nach einer Fraktur ist Mobilisierung Behandlungsziel und Therapies{\"a}ule. Das Festlegen von Outcomes basiert jedoch auf vielen Unsicherheiten, da Assessments nicht f{\"u}r alle Patient/-innen geeignet sind. Sie k{\"o}nnen agesabh{\"a}ngig beeinflusst und subjektiv gepr{\"a}gt sein. Sensorbasiertes Bewegungsmonitoring bietet eine Erg{\"a}nzung zur Operationalisierung der Gehf{\"a}higkeit. F{\"u}r L{\"a}ngsschnittuntersuchungen, die auch im h{\"a}uslichen Umfeld durchgef{\"u}hrt werden, eignet sich die t{\"a}gliche Schrittzahl als Variable. Sie kann durch einen handels{\"u}blichen Fitnesstracker beobachtet werden.}, language = {de} } @inproceedings{AltenbuchnerHaugWeber, author = {Altenbuchner, Amelie and Haug, Sonja and Weber, Karsten}, title = {Individualisiertes Bewegungsmonitoring, Bewegungsfeedback und Lebensqualit{\"a}tsmessung in der Rehabilitation geriatrischer Traumapatient/-innen}, series = {3. OTH-Clusterkonferenz, 13. April 2018, Ostbayerische Technische Hochschule Weiden}, booktitle = {3. OTH-Clusterkonferenz, 13. April 2018, Ostbayerische Technische Hochschule Weiden}, organization = {OTH Regensburg und OTH Amberg-Weiden}, pages = {90 -- 96}, abstract = {Es handelt sich um eine prospektive Studie zu einem beantragten BMBF-Projekt in einer Kooperation zwischen dem Institut f{\"u}r Sozialforschung und Technikfolgenabsch{\"a}tzung (IST), der Professur f{\"u}r E-Health der Fakult{\"a}t Informatik und Mathematik an der OTH Regensburg sowie der Alterstraumatologie im Caritas Krankenhaus St. Josef Regensburg. Die geplante Machbarkeitsstudie forciert die Implementierung eines individualisierten Bewegungsmonitorings und feedbacks durch Einsatz eines alltagstauglichen Motion-Trackers in der Rehabilitation geriatrischer Traumapatient/innen. Das Wiedererlangen von Mobilit{\"a}t nach einer Fraktur geht einher mit dem Erhalt der subjektiven Lebensqualit{\"a}t (LQ) hochaltriger Menschen. Durch diagnostische {\"U}berwachung mithilfe der Motion-Tracker wird das Wiedererlangen bzw. der Erhalt von Mobilit{\"a}t quantitativ begleitet, um daraus Handlungsempfehlungen f{\"u}r deren n{\"u}tzlichen und kosteng{\"u}nstigen Einsatz in der geriatrischen Rehabilitation abzuleiten. Die Vorstudie dient der Validierung des Einsatzes handels{\"u}blicher Motion-Tracker in der Alterstraumatologie, einschließlich der Entwicklung eines f{\"u}r die Zielgruppe geeigneten Bewegungsfeedbacks sowie der {\"U}berpr{\"u}fung des Fragebogens zur LQ multimorbider {\"a}lterer Menschen (FLQM). Hierf{\"u}r werden quantitative und qualitative Methoden der Disziplinen Soziologie, Gesundheitsforschung, Philosophie/Ethik, Datenschutzrecht und medizinische Informatik, Medizin, Pflege, Gerontologie und Physiotherapie, die sich gegenseitig erg{\"a}nzen (Methoden-Mix), herangezogen.}, language = {de} } @inproceedings{AltenbuchnerHaugWeber, author = {Altenbuchner, Amelie and Haug, Sonja and Weber, Karsten}, title = {Exploratory Analysis of Motion Tracking Data in the Rehabilitation Process of Geriatric Trauma Patients}, series = {Studies in Health Technology and Informatic. Volume 260: dHealth 2019 - From eHealth to dHealth}, booktitle = {Studies in Health Technology and Informatic. Volume 260: dHealth 2019 - From eHealth to dHealth}, editor = {Hayn, Dieter and Eggerth, A. and Schreier, G{\"u}nter}, publisher = {IOS Press}, doi = {10.3233/978-1-61499-971-3-138}, pages = {138 -- 145}, abstract = {Background: This article is based on an ongoing long-term study, in which customary motion trackers measure steps during rehabilitation of geriatric trauma patients (Med=86 years). Objectives: Exploring steps after 28 days of measurement. Finding similarities in the data by running cluster analysis and formulating linear regressions models to predict steps through time. Methods: Two types of motion trackers (FitBitAlta HR and Garmin v{\´i}vofit 3) have been used to measure patients' (N=24) steps after hip fracture in two study groups. Cluster analysis detected three clusters for progress in number of steps that were tested for group differences with ANOVA. Regression analysis tested models for individual patients. Results: Three-cluster solutions showed significant differences for the average amount of steps after 5, 14, 21 and 28 days. Regression models could predict 71 \% of the individual patients' progress in study group 2. Conclusion: The long-term study will provide more data in the future to examine the three-cluster solution and to find out in what stage of rehabilitation the measurement of the steps could be used to predict individual rehabilitation.}, language = {en} } @article{AltenbuchnerMelzlSonntag, author = {Altenbuchner, Amelie and Melzl, Marie-Theres and Sonntag, Helena Sophie}, title = {Erf{\"u}llen Straßenzeitungen ihren Auftrag?}, series = {Sozial Extra}, volume = {42}, journal = {Sozial Extra}, number = {4}, publisher = {Springer}, address = {Wiesbaden}, issn = {1863-8953}, doi = {10.1007/s12054-018-0055-x}, pages = {65 -- 70}, abstract = {Straßenzeitungen haben sich zum Ziel gesetzt, einen Zuverdienst f{\"u}r Menschen in Not zu bieten und zugleich Vorurteile gegen{\"u}ber Obdachlosen {\"o}ffentlich zu bek{\"a}mpfen. Eine Leserumfrage der Regensburger Straßenzeitung DONAUSTRUDL untersuchte die Wirksamkeit der Zeitung hinsichtlich ihrer Aufkl{\"a}rungsorientierung. Das Ergebnis zeigte, dass die Leser_innenschaft kaum weniger Vorurteile gegen Obdachlose hatte als die Gesamtbev{\"o}lkerung.}, language = {de} } @incollection{AltenbuchnerWeber, author = {Altenbuchner, Amelie and Weber, Karsten}, title = {Geriatric trauma patients as research subjects in a technology-driven research project}, series = {Aging between Participation and Simulation}, booktitle = {Aging between Participation and Simulation}, editor = {Haltaufderheide, Joschka and Hovemann, Johanna and Vollmann, Jochen}, publisher = {De Gruyter}, address = {Berlin u.a.}, isbn = {9783110677485}, doi = {10.1515/9783110677485-006}, pages = {87 -- 104}, abstract = {This article highlights methodological and ethical challenges in research with adults of older and oldest age, by presenting field experiences of the current research project "Motion Monitoring of Geriatric Trauma Patients - Explorative Study on the Rehabilitation Process after Hip Fracture Using Sensor-based Data". Depiction of the survey situation, with regard to the subjects in particular, can serve as practical examples for designing future research projects. The group of older adults is a rather large and growing group for which research is required, especially concerning their heterogeneity, their individual autonomy and quality of life. It is assumed, that research designs of studies on the target group must be specifically adjusted, in particular when considering the attribution of vulnerability of the group members. At the same time, it is not clear yet what exact specifics of the subjects and target group must be considered in research designs, as surprisingly little is known about the target group as subjects and corresponding theories have been insufficiently tested. The exploratory long-term design of the research project presented in the second section of this chapter has a positive evaluation of an ethics committee. Still ethical challenges occurred in the field situation, that are illustrated in the third section of this chapter, by providing information on the patients, their role as research subjects, how they were recruited, how an informed consensus was reached, and in some cases how participation was rejected or abandoned. After a summary, the end of the paper is marked by recommendations on how to design future research projects. Cumulatively it must always be expected that interaction between researchers and research subjects of this target group can become very intensive, what requires to follow clearly defined procedures and at the same time to be prepared to act flexibly.}, language = {en} } @inproceedings{AltenbuchnerWeberFuchs, author = {Altenbuchner, Amelie and Weber, Karsten and Fuchs, Dominik}, title = {N{\"u}tzlichkeit und Nutzung}, series = {Assistive Technik f{\"u}r selbstbestimmtes Wohnen, 6. Ambient Medicine® Forum 19.-20. Februar 2019}, booktitle = {Assistive Technik f{\"u}r selbstbestimmtes Wohnen, 6. Ambient Medicine® Forum 19.-20. Februar 2019}, editor = {Friedrich, Petra and Fuchs, Dominik}, publisher = {Cuvillier}, address = {G{\"o}ttingen}, pages = {149 -- 156}, subject = {AAL-Technik}, language = {de} } @article{AlvarezMoretObermeierPohletal., author = {Alvarez Moret, Judit and Obermeier, Tina and Pohl, Fabian and L{\"o}schel, Rainer and K{\"o}lbl, Oliver and Dobler, Barbara}, title = {Second cancer risk after radiation therapy of ependymoma using the flattening filter free irradiation mode of a linear accelerator}, series = {Journal of Applied Clinical Medical Physics}, volume = {19}, journal = {Journal of Applied Clinical Medical Physics}, number = {5}, publisher = {Wiley}, organization = {American Association of Physicists in Medicine}, doi = {10.1002/acm2.12438}, pages = {632 -- 639}, abstract = {Pediatric patients suffering from ependymoma are usually treated with cranial or craniospinal three-dimensional (3D) conformal radiotherapy (3DCRT). Intensity-modulated techniques spare dose to the surrounding tissue, but the risk for second malignancies may be increased due to the increase in low-dose volume. The aim of this study is to investigate if the flattening filter free (FFF) mode allows reducing the risk for second malignancies compared to the mode with flattening filter (FF) for intensity-modulated techniques and to 3DCRT. A reduction of the risk would be advantageous for treating pediatric ependymoma. 3DCRT was compared to intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) with and without flattening filter. Dose-volume histograms (DVHs) were compared to evaluate the plan quality and used to calculate the excess absolute risk (EAR) to develop second cancer in the brain. Dose verification was performed with a two-dimensional (2D) ionization chamber array and the out-of-field dose was measured with an ionization chamber to determine the EAR in peripheral organs. Delivery times were measured. Both VMAT and IMRT achieved similar plan quality in terms of dose sparing in the OAR and higher PTV coverage as compared to 3DCRT. Peripheral dose in low-dose region, which is proportional to the EAR in organs located in this region, for example, gonads, bladder, or bowel, could be significantly reduced using FFF. The lowest peripheral EAR and lowest delivery times were hereby achieved with VMATFFF . The EAR calculated based on DVH in the brain could not be reduced using FFF mode. VMATFFF improved the target coverage and homogeneity and kept the dose in the OAR similar compared to 3DCRT. In addition, delivery times were significantly reduced using VMATFFF . Therefore, for radiotherapy of ependymoma patients, VMATFFF may be considered advantageous for the combination of Elekta Synergy linac and Oncentra External Beam planning system used in this study.}, language = {en} } @article{AmannHaug, author = {Amann, Karina and Haug, Sonja}, title = {Wie k{\"o}nnen demokratische Prozesse organisiert werden?}, series = {TRIOLOG}, journal = {TRIOLOG}, number = {1}, organization = {Hochschulverbund TRIO}, pages = {34 -- 35}, subject = {Demokratie}, language = {de} } @inproceedings{AndersendeZeeDendorferetal., author = {Andersen, Michael Skipper and de Zee, Mark and Dendorfer, Sebastian and MacWilliams, Bruce and Rasmussen, John}, title = {Validation of a detailed lower extremity model based on the Klein Horsman data set}, series = {Proceedings of the 12th International Symposium on Computer Simulation in Biomechanics (ISB 2009), July 2nd - 4th 2009, Cape Town, South Africa}, booktitle = {Proceedings of the 12th International Symposium on Computer Simulation in Biomechanics (ISB 2009), July 2nd - 4th 2009, Cape Town, South Africa}, pages = {27 -- 28}, language = {en} } @incollection{Anderson, author = {Anderson, Philip}, title = {Chancen und Herausforderungen in der beruflichen Bildung von jungen Gefl{\"u}chteten}, series = {Nach der Flucht - Interdisziplin{\"a}re Perspektiven eines Netzwerks von Hochschulen und Zivilgesellschaft}, booktitle = {Nach der Flucht - Interdisziplin{\"a}re Perspektiven eines Netzwerks von Hochschulen und Zivilgesellschaft}, editor = {Klein, Lisa and H{\"u}bner, Ann-Kathrin and Munser-Kiefer, Meike}, publisher = {Campus Asyl}, address = {Regensburg}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:355-epub-413119}, pages = {81 -- 91}, language = {de} } @misc{Anderson, author = {Anderson, Philip}, title = {"Ein bisschen dort, ein bisschen hier" - Situation von Migrant*innen im Alter : Vortrag im Rahmen der Tagung "Alter und Migration - Gesund und gut gepflegt bis ins hohe Alter"}, series = {Tagung "Alter und Migration - Gesund und gut gepflegt bis ins hohe Alter"}, journal = {Tagung "Alter und Migration - Gesund und gut gepflegt bis ins hohe Alter"}, language = {de} } @incollection{Anderson, author = {Anderson, Philip}, title = {Unaccompanied Refugee Children and Adolescents and Access to Vocational Training in Germany - with a Focus on Bavaria (Loyola University)}, series = {Unaccompanied migrant children}, booktitle = {Unaccompanied migrant children}, editor = {Haker, Hille and Greening, Molly}, publisher = {Lexington Books}, address = {Lanham; Boulder; New York}, isbn = {978-1-4985-7454-9}, pages = {63 -- 74}, language = {en} } @article{Anderson, author = {Anderson, Philip}, title = {Fuß fassen und voran kommen: Familie, Leben und Lernen von jungen Gefl{\"u}chteten in den Berufsintegrationsklassen}, series = {Modellprojekt Perspektive Beruf f{\"u}r Asylbewerber und Fl{\"u}chtlinge : Ergebnisse und Empfehlungen f{\"u}r die Praxis}, journal = {Modellprojekt Perspektive Beruf f{\"u}r Asylbewerber und Fl{\"u}chtlinge : Ergebnisse und Empfehlungen f{\"u}r die Praxis}, organization = {Stiftung Bildungspakt Bayern}, pages = {66 -- 71}, language = {de} } @incollection{Anderson, author = {Anderson, Philip}, title = {Integration Gefl{\"u}chteter: Einf{\"u}hrung und Interview}, series = {P{\"a}dagogische Qualit{\"a}t f{\"u}r Kinder mit besonderem Unterst{\"u}tzungsbedarf}, booktitle = {P{\"a}dagogische Qualit{\"a}t f{\"u}r Kinder mit besonderem Unterst{\"u}tzungsbedarf}, editor = {Becker-Stoll, Fabienne and Reichert-Garschhammer, Eva and Broda-Kaschube, Beatrix}, publisher = {Vandenhoeck \& Ruprecht}, address = {G{\"o}ttingen}, isbn = {978-3-525-70270-3}, pages = {46 -- 52}, language = {de} } @techreport{Anderson, author = {Anderson, Philip}, title = {Gefl{\"u}chtete und die berufliche Bildung. Analyse und Empfehlungen f{\"u}r die Fortentwicklung der Berufsintegrationsklassen (BI-Klassen) in Bayern}, language = {de} } @article{Anderson, author = {Anderson, Philip}, title = {Vocational Training and Therapeutic Care of Young Asylum Seekers and Refugees in Germany}, series = {Rajagiri Journal of Social Development}, volume = {8}, journal = {Rajagiri Journal of Social Development}, number = {2}, publisher = {OJS/PKP}, pages = {111 -- 128}, abstract = {Against the background of the huge rise in the number of asylum seekers and refugees absorbed into German society over the last couple of years this article examines the innovative Bavarian programme of preparatory classes for asylum seekers between 16 and 21 years of age. The challenges faced by educational and social work professionals working with this target group are documented alongside the particular resources which these highly-motivated young people as a rule bring with them. Specific requirements for psychotherapy professionals are addressed as well as a range of recommendations formulated by the author to enable the longer-term success of this vocational training programme in integrating these young people into the German educational and employment system. It has become apparent that a holistic approach to the lives of the target group by professionals in education, social work and therapy is necessary to enable young asylums seekers to complete vocational training successfully. Transitional management is a key part of the process of setting asylum seekers on the path to an apprenticeship. Coordination with the Labour Office, local authority administration and local decision-makers are further parts of the equation. This must intermesh with civil society engagement to provide the maximum use of resources giving young refugees access to training, the labour market  and long term integration into German life.}, language = {en} } @article{Anderson, author = {Anderson, Philip}, title = {Wir brauchen eine Fl{\"u}chtlingsp{\"a}dagogik}, series = {E \& W. {\"U}berg{\"a}ngeErziehung \& Wissenschaft. Zeitschrift der Bildungsgewerkschaft GEW}, volume = {68}, journal = {E \& W. {\"U}berg{\"a}ngeErziehung \& Wissenschaft. Zeitschrift der Bildungsgewerkschaft GEW}, number = {10}, publisher = {Stamm Verlag}, issn = {0342-0671}, pages = {44 -- 45}, language = {de} } @incollection{Anderson2018, author = {Anderson, Philip}, title = {Chances for young refugees: On access to vocational training and the dynamics of labour market integration for young refugees in Germany}, series = {People on the Move. Advancing the Discourse on Migration and Jobs : Publication of the Just Jobs Network, Washington DC, USA}, booktitle = {People on the Move. Advancing the Discourse on Migration and Jobs : Publication of the Just Jobs Network, Washington DC, USA}, pages = {43 -- 54}, year = {2018}, language = {en} } @inproceedings{Anderson, author = {Anderson, Philip}, title = {Gib mir doch eine Chance!}, series = {Tagungsdokumentation "Synapse" der Tagung Neue Fremde Heimat (26.-27.9.2016) der MEDBO der Kinder- und Jugendpsychiatrie Regensburg}, booktitle = {Tagungsdokumentation "Synapse" der Tagung Neue Fremde Heimat (26.-27.9.2016) der MEDBO der Kinder- und Jugendpsychiatrie Regensburg}, address = {Regensburg}, pages = {4 -- 5}, language = {de} } @incollection{Anderson, author = {Anderson, Philip}, title = {MigrantInnen und die Freizeit}, series = {Handbuch Migrationsarbeit}, booktitle = {Handbuch Migrationsarbeit}, publisher = {Springer}, address = {Berlin}, doi = {10.1007/978-3-531-19945-0_22}, pages = {229 -- 240}, abstract = {Dieser Beitrag befasst sich mit dem Freizeitverst{\"a}ndnis und -verhalten von Menschen mit Migrationshintergrund. F{\"u}r ein umfassendes Verst{\"a}ndnis des Freizeitverhaltens in der Migration ist es sinnvoll, sich mit kulturbedingten Vorstellungen von der Freizeit zu befassen. In diesem Aufsatz bilden deswegen solche {\"U}berlegungen den Einstieg in die Thematik. Eine kurze historische Betrachtung der Rolle der Freizeit f{\"u}r die erste "Gastarbeitergeneration" folgt diesen einleitenden Anmerkungen. Dann werden der Zusammenhang zwischen Schule und Bildung f{\"u}r junge MigrantInnen und der daraus hergeleitete Einfluss auf das Freizeitverhalten sowie auf die Rolle von MigrantInnensportvereinen betrachtet.}, language = {de} } @incollection{AndersonKorntheuerGagetal., author = {Anderson, Philip and Korntheuer, Annette and Gag, Maren and Schroeder, Joachim}, title = {12. Education of Refugee-background Youth in Germany: Systemic Barriers to Equitable Participation in the Vocational Education System}, series = {Educating Refugee-background Students : Critical Issues and Dynamic Contexts}, booktitle = {Educating Refugee-background Students : Critical Issues and Dynamic Contexts}, editor = {Shapiro, Shawna and Farrelly, Raichle}, publisher = {Multilingual Matters}, address = {Bristol, Blue Ridge Summit}, isbn = {9781783099986}, doi = {10.21832/9781783099986-017}, pages = {191 -- 207}, abstract = {Germany received around 300,000 refugee newcomers ages 16-25 in 2015. Educational participation is a key process for the integration of these young people. This is especially true for the German vocational education and training (VET) system that provides opportunities for a fast and successful transition into the labor market. The few extant studies on migrant students in Germany have shown considerable problems in achieving educational equity. Based on the theoretical assumption that systemic discrimination creates important barriers to educational equity, we investigate how institutional and systemic factors infl uence the educational participation of refugee-background youth and how these youth cope with such barriers. Using a two-case study in the cities of Hamburg and Munich, we performed a meta-analysis of research reports, complemented by secondary analysis of primary data. Results show institutional barriers in both the education and asylum systems, and that youth cope with these barriers through high educational aspirations.}, language = {en} } @article{AngererHaberkernLauer, author = {Angerer, Linda and Haberkern, Annika and Lauer, Norina}, title = {Mundmotorische {\"U}bungen in der Artikulationstherapie?}, series = {Forum Logop{\"a}die}, volume = {39}, journal = {Forum Logop{\"a}die}, number = {2}, pages = {20 -- 26}, abstract = {Der Artikel pr{\"a}sentiert die Ergebnisse einer deutschlandweiten quantitativen Online-Befragung von Therapeut*innen der Logop{\"a}die/Sprachtherapie zur Nutzung mundmotorischer {\"U}bungen (M{\"U}) in der Artikulationstherapie bei Kindern. Demnach setzen 70 Prozent der 239 Befragten M{\"U} in der Therapie phonetischer St{\"o}rungen ein und kennen M{\"U} aus ihrer Ausbildung, aus der Fachliteratur sowie aus Fortbildungen. Die am h{\"a}ufigsten ausgew{\"a}hlten Gr{\"u}nde f{\"u}r den Einsatz waren die Empfehlung der (fr{\"u}heren) Ausbildungseinrichtung, die eigene Berufserfahrung und Erkenntnisse der besuchten Fortbildungen. M{\"U} werden eingesetzt, weil sie im Rahmen von Fortbildungen, in Ratgebern und Lehrb{\"u}chern empfohlen werden. Dies widerspricht jedoch der Studienlage, welche die Wirksamkeit von M{\"U} zur Intervention bei phonetischen St{\"o}rungen widerlegt. Die Erhebung zeigt, dass viele Therapeut*innen M{\"U} dennoch weiterhin verwenden. Der Artikel pl{\"a}diert f{\"u}r ein effektives und effizientes Arbeiten auf der Grundlage evidenzbasierter Methoden auch in der Artikulationstherapie.}, subject = {Artikulation}, language = {de} } @article{ArribasAntonelliFrazzonietal., author = {Arribas, Julia and Antonelli, Giulio and Frazzoni, Leonardo and Fuccio, Lorenzo and Ebigbo, Alanna and van der Sommen, Fons and Ghatwary, Noha and Palm, Christoph and Coimbra, Miguel and Renna, Francesco and Bergman, Jacques J.G.H.M. and Sharma, Prateek and Messmann, Helmut and Hassan, Cesare and Dinis-Ribeiro, Mario J.}, title = {Standalone performance of artificial intelligence for upper GI neoplasia: a meta-analysis}, series = {Gut}, volume = {70}, journal = {Gut}, number = {8}, publisher = {BMJ}, address = {London}, doi = {10.1136/gutjnl-2020-321922}, pages = {1458 -- 1468}, abstract = {Objective: Artificial intelligence (AI) may reduce underdiagnosed or overlooked upper GI (UGI) neoplastic and preneoplastic conditions, due to subtle appearance and low disease prevalence. Only disease-specific AI performances have been reported, generating uncertainty on its clinical value. Design: We searched PubMed, Embase and Scopus until July 2020, for studies on the diagnostic performance of AI in detection and characterisation of UGI lesions. Primary outcomes were pooled diagnostic accuracy, sensitivity and specificity of AI. Secondary outcomes were pooled positive (PPV) and negative (NPV) predictive values. We calculated pooled proportion rates (\%), designed summary receiving operating characteristic curves with respective area under the curves (AUCs) and performed metaregression and sensitivity analysis. Results: Overall, 19 studies on detection of oesophageal squamous cell neoplasia (ESCN) or Barrett's esophagus-related neoplasia (BERN) or gastric adenocarcinoma (GCA) were included with 218, 445, 453 patients and 7976, 2340, 13 562 images, respectively. AI-sensitivity/specificity/PPV/NPV/positive likelihood ratio/negative likelihood ratio for UGI neoplasia detection were 90\% (CI 85\% to 94\%)/89\% (CI 85\% to 92\%)/87\% (CI 83\% to 91\%)/91\% (CI 87\% to 94\%)/8.2 (CI 5.7 to 11.7)/0.111 (CI 0.071 to 0.175), respectively, with an overall AUC of 0.95 (CI 0.93 to 0.97). No difference in AI performance across ESCN, BERN and GCA was found, AUC being 0.94 (CI 0.52 to 0.99), 0.96 (CI 0.95 to 0.98), 0.93 (CI 0.83 to 0.99), respectively. Overall, study quality was low, with high risk of selection bias. No significant publication bias was found. Conclusion: We found a high overall AI accuracy for the diagnosis of any neoplastic lesion of the UGI tract that was independent of the underlying condition. This may be expected to substantially reduce the miss rate of precancerous lesions and early cancer when implemented in clinical practice.}, language = {en} } @misc{AttenbergerConradFreisetal., author = {Attenberger, Eva and Conrad, Jacob and Freis, Annabella and Kappelmeier, Judith and Strauch, Felix and Pfingsten, Andrea and Schedel, Valentin}, title = {Die Interrater-Reliabilit{\"a}t von Berufsanf{\"a}nger*innen bei der Bewertung von Patient*innen mit Knieproblemen beim Sit-to-Stand}, series = {physioscience}, volume = {20}, journal = {physioscience}, publisher = {Thieme}, doi = {10.1055/s-00000128}, pages = {S20 (P28)}, abstract = {Hintergrund: In der Physiotherapie existieren zahlreiche Assessments zur Befunderhebung der unteren Extremit{\"a}t bei Kniepatient*innen. Damit k{\"o}nnen praktizierende Physiotherapeut*innen das Problem der Patient*innen genauer erfassen und dementsprechend die Behandlung aufbauen. Das Ergebnis der Beurteilung einer Patient\#ast\#in h{\"a}ngt oftmals stark von den Bewertenden ab. Fragestellung: Deshalb {\"u}berpr{\"u}ft die Studie die Hypothese, ob innerhalb einer Tester*innengruppe mehr gleiche Ausgleichsbewegung bei der Befundung des Sit-to-Stand (STS) anhand von Videomaterial erkannt werden, als es der Standard erwarten w{\"u}rde. Methode: In dieser beobachtenden klinischen Querschnittsstudie wurde die Vergleichbarkeit der Befundergebnisse von 4 Therapeut*innen zum abgewandelten STS untersucht. Die zu beurteilenden Proband*innen wurden w{\"a}hrend der Durchf{\"u}hrung des abgewandelten STS standardisiert in der Frontal- und Sagittalebene gefilmt und mittels eines Fragebogens von Berufsanf{\"a}nger*innen der Physiotherapie beurteilt. Bei dem erstellten Fragebogen handelte es sich um eine systematische Abfrage aller m{\"o}glichen Bewegungen der großen Gelenke der unteren Extremit{\"a}t mit dichotomen Antwortm{\"o}glichkeiten. Eingeschlossen wurden Proband*innen mit oder ohne diagnostizierten Knieproblemen, die {\"a}lter als 18 Jahre und deutschsprachig sind. Proband*innen mit einschr{\"a}nkenden Nebenerkrankungen wie z.B. neurologische Erkrankungen und Operationen in den letzten 6 Monaten wurden ausgeschlossen. Anschließend wurden die Antworten der Therapeut*innen auf die {\"U}bereinstimmung der Ergebnisse {\"u}berpr{\"u}ft. Ergebnisse: Die vollst{\"a}ndigen Ergebnisse werden auf dem Poster nachgereicht. Die Interrater-Reliabilit{\"a}t wird mit Hilfe des Fleiss' Kappa bestimmt. Voraussichtlich werden 25 Proband*innen in die Studie eingeschlossen. Schlussfolgerung: Mittels der Ergebnisse soll auf die Interrater-Reliabilit{\"a}t von Bewegungsbefunden des abgewandelten STS bei Kniepatient*innen geschlossen werden}, subject = {Kniegelenk}, language = {de} } @phdthesis{Auer, author = {Auer, Simon}, title = {Musculoskeletal models in highly dynamic motion: effects of model parameters and mental stress}, address = {Regensburg}, doi = {10.5283/epub.55106}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:355-epub-551061}, pages = {ii, 85}, abstract = {The analysis and understanding of highly dynamic movements is a fundamental part of biomechanics. Since sports injuries often involve the lower extremities and muscles, musculoskeletal models can help to prevent them. These models allow the calculation of ground and joint reaction forces as well as muscle forces and activities for individual muscle strands. One goal of this work is to use musculoskeletal models to investigate the influence of mental stress on lower extremity loading. Moreover, the models themselves are evaluated for highly dynamic movements and practical recommendations for action will be derived. For this purpose, fast movements of youth competitive and amateur athletes will be recorded using different measurement systems. Subsequently, the models calculate the target parameters using inverse dynamics. Furthermore, measured and calculated muscle activities of the lower extremities are compared and artificial balancing forces (residuals) in the models are analyzed and minimization approaches are presented. The investigation of muscle and joint loading under mental stress has shown that the response to mental stress is highly individual. Athletes may experience a significant increase in muscle and knee forces with a simultaneous decrease in performance. The comparison of measured and calculated muscle activity proved the reliability of the models also for highly dynamic movements. With the frequently used default settings in the model and optical and inertial motion capture, the muscle activities in the model could be calculated reliably. The residual forces were highest, when the model transitioned from foot-ground contact to no contact and vice versa. By adjusting the settings of the kinematic filter and the ground reaction force prediction, the residuals were reduced by up to 54\%. The analysis of musculoskeletal loading under mental stress has shown that the models can make a valuable contribution to the biomechanical analysis of highly dynamic movements. Subsequently, the models have also proven to be a reliable tool for the analysis of highly dynamic movements when the calculated parameters as well as the model-specific optimization options are reviewed. With this in mind, these models can contribute to further understand highly dynamic movements and prevent muscle injuries in athletes.}, language = {en} } @misc{AuerKrutschRenkawitzetal., author = {Auer, Simon and Krutsch, Werner and Renkawitz, Tobias and Kubowitsch, Simone and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Effect of mental demand on leg loading in highly dynamic motion}, series = {AnyBody online Webinar, Oct 2020}, journal = {AnyBody online Webinar, Oct 2020}, abstract = {Football players have a high risk of leg muscle injuries, especially when exposed to mental stress. Injuries to muscles of the thigh are common in amateur and professional football, representing almost a third of all injuries. These injuries occur primarily in non-contact situations and from overuse. They can lead to a range of costs, including financial costs associated with treatment as well as those associated with long-term recovery, and absence from training and/or competition. Further, there is a high risk of injury recurrence and subsequent injury.}, language = {en} } @article{AuerKrutschRenkawitzetal., author = {Auer, Simon and Krutsch, Werner and Renkawitz, Tobias and Kubowitsch, Simone and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Kognitiver Stress f{\"u}hrt zu unphysiologisch erh{\"o}hten Kniebelastungen im Profifußball}, series = {Sports Orthopaedics and Traumatology}, volume = {36}, journal = {Sports Orthopaedics and Traumatology}, number = {2}, publisher = {Elsevier}, doi = {10.1016/j.orthtr.2020.04.122}, pages = {202 -- 203}, language = {de} } @article{AuerKubowitschDendorfer, author = {Auer, Simon and Kubowitsch, Simone and Dendorfer, Sebastian}, title = {Kombinierter Einfluss von psychologischen und biomechanischen Faktoren auf die muskul{\"a}ren Belastungen beim Fußballspielen}, series = {Die Orthop{\"a}die}, volume = {52}, journal = {Die Orthop{\"a}die}, number = {11}, publisher = {Springer}, doi = {10.1007/s00132-023-04437-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-65113}, pages = {1 -- 6}, abstract = {When mental stress and musculoskeletal loading interact, the risk for injury increases due to altered body kinematics and increased muscle tension. These changes can be detected with musculoskeletal models, and mental loading and stress must be analyzed at emotional, cognitive, and behavioral levels. To investigate these kinematic and loading changes under stress, competitive athletes were subjected to mental stress during highly dynamic movements, and musculoskeletal models were used to analyze the biomechanical loading. It was shown that under mental stress, independent of the subjective perception, a strong change in muscle forces can occur. Accordingly, competitive athletes should undergo screenings to assess individual movement patterns and promote general stress resilience.}, language = {de} } @inproceedings{AuerKubowitschKrutschetal., author = {Auer, Simon and Kubowitsch, Simone and Krutsch, Werner and Renkawitz, Tobias and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Effect of mental demand on knee forces in professional youth soccer players}, series = {ISBS Proceedings Archive}, volume = {38}, booktitle = {ISBS Proceedings Archive}, number = {1, Art. 28}, abstract = {Soccer is one of the most popular sports all around the world. It is an injurious type of sport with a focus on lower extremities and high psychological pressure during matches. The stressor is linked with injuries and an increased musculoskeletal loading. This study investigates the influence of cognitive stress on the load profile of the knee joint. Twelve professional youth soccer players performed highly dynamic runs with and without additional cognitive stress. The runs were analysed with a musculoskeletal simulation software. The data analysis shows no difference in knee joint reaction loading under additional mental stress compared to the baseline. Yet running times are significantly lower in the baseline. While there is no increase in the joint loads, the running times indicate an altered movement behaviour when the subjects are exposed to additional mental demand.}, subject = {Kniegelenk}, language = {en} } @article{AuerKurbowitschSuessetal., author = {Auer, Simon and Kurbowitsch, Simone and S{\"u}ß, Franz and Renkawitz, Tobias and Krutsch, Werner and Dendorfer, Sebastian}, title = {Mental stress reduces performance and changes musculoskeletal loading in football-related movements}, series = {Science and Medicine in Football}, volume = {5}, journal = {Science and Medicine in Football}, number = {4}, publisher = {Taylor \& Francis}, doi = {10.1080/24733938.2020.1860253}, pages = {323 -- 329}, abstract = {Purpose: Football players have a high risk of leg muscle injuries, especially when exposed to mental stress. Hence, this study investigated the musculoskeletal response of elite youth football players during highly dynamic movements under stress. The hypothesis is that mental stress reduces performance and changes the muscular forces exerted. Materials \& methods: Twelve elite youth football players were subjected to mental stress while performing sports-specific change-of-direction movements. A modified version of the d2 attention test was used as stressor. The kinetics are computed using inverse dynamics. Running times and exerted forces of injury-prone muscles were analysed. Results: The stressor runs were rated more mentally demanding by the players (p = 0.006, rs = 0.37) with unchanged physical demand (p = 0.777, rs = 0.45). This resulted in 10\% longer running times under stress (p < 0.001, d = -1.62). The musculoskeletal analysis revealed higher peak muscle forces under mental stress for some players but not for others. Discussion: The study shows that motion capture combined with musculoskeletal computation is suitable to analyse the effects of stress on athletes in highly dynamic movements. For the first time in football medicine, our data quantifies an association between mental stress with reduced football players' performance and changes in muscle force.}, language = {en} } @misc{AuerNieblerEiglspergeretal., author = {Auer, Simon and Niebler, Michael and Eiglsperger, Josef and Kubowitsch, Simone and Renkawitz, Tobias and Achenbach, Leonard and Krutsch, Werner and Dendorfer, Sebastian}, title = {Cognitive stress increases muscle forces in dynamic football specific movements}, series = {European Society of Biomechanics meeting 2019, Vienna, Austria}, journal = {European Society of Biomechanics meeting 2019, Vienna, Austria}, language = {en} } @misc{AuerReinkerDendorfer, author = {Auer, Simon and Reinker, Lukas and Dendorfer, Sebastian}, title = {Evaluation of muscle recruitment and muscle models in musculoskeletal simulation of dynamic motion}, series = {26th Congress of the European Society of Biomechanics, July 11-14, 2021, Milan, Italy}, journal = {26th Congress of the European Society of Biomechanics, July 11-14, 2021, Milan, Italy}, address = {Milan}, pages = {8}, abstract = {Musculoskeletal simulation plays an increasingly important role in sports biomechanics. In the last years, the field of application widened from orthopaedics and ergonomics to sports [1]. A muscle recruitment algorithm with a quadratic objective function is usually used to calculate muscle activity in dynamic movements. The agreement of calculated and measured thigh muscle activity has already been investigated [2]. They found a strong agreement for sprinting and running, while the correlation decreased for side-cutting manoeuvres. Nevertheless, the influence of different muscle recruitment criteria on muscle activity in dynamic musculoskeletal simulations is currently unknown. Hence, this study aimed to analyse the effect of different muscle recruitment criteria and muscle models on the correlation of numerical and measured muscle activity in highly dynamic movements.}, language = {en} } @misc{AuerReinkerSuessetal., author = {Auer, Simon and Reinker, Lukas and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Comparing calculated and measured muscle activity of thigh muscles in dynamic motion.}, series = {27th Congress of the European Society of Biomechanics, 26 - 29 June 2022, Porto, Portugal}, journal = {27th Congress of the European Society of Biomechanics, 26 - 29 June 2022, Porto, Portugal}, pages = {640}, language = {en} } @misc{AuerReinkerSuessetal., author = {Auer, Simon and Reinker, Lukas and S{\"u}ß, Franz and Kubowitsch, Simone and Krutsch, Werner and Weber, Markus and Renkawitz, Tobias and Dendorfer, Sebastian}, title = {Webcast: Effect of mental demand on leg loading in highly dynamic motion}, abstract = {Football players have a high risk of leg muscle injuries, especially when exposed to mental stress. Injuries to muscles of the thigh are common in amateur and professional football, representing almost a third of all injuries. These injuries occur primarily in non-contact situations and from overuse. They can lead to a range of costs, including financial costs associated with treatment as well as those associated with long-term recovery, and absence from training and/or competition. Further, there is a high risk of injury recurrence and subsequent injury.}, language = {en} } @article{AuerSchieblIversenetal., author = {Auer, Simon and Schiebl, Jonas and Iversen, Kristoffer and Subhash Chander, Divyaksh and Damsgaard, Michael and Dendorfer, Sebastian}, title = {Biomechanical assessment of the design and efficiency of occupational exoskeletons with the AnyBody Modeling System}, series = {Zeitschrift f{\"u}r Arbeitswissenschaften}, volume = {76}, journal = {Zeitschrift f{\"u}r Arbeitswissenschaften}, number = {4}, publisher = {Springer Nature}, doi = {10.1007/s41449-022-00336-4}, pages = {440 -- 449}, abstract = {Exoskeletons were invented over 100 years ago but have only become popular in the last two decades, especially in the working industry as they can decrease work-related loads significantly. The most often used exoskeletons are for the lower back and shoulder since these are commonly affected body regions. All devices have in common that their purpose is to reduce internal loads of vulnerable body regions. Nevertheless, there is still little understanding on how biomechanical loading in the human body changes when exoskeletons are used. Therefore, further analyses are needed. A promising candidate for these are musculoskeletal models, which are based on an inverse dynamics approach and can calculate external parameters such as ground reaction forces or other interaction forces as well as internal parameters such as joint reaction forces or muscle activities. The various examples in the literature show that these models are increasingly used for assessing the biomechanical effects of exoskeletons on the human body. Furthermore, musculoskeletal models can calculate biomechanical loadings of humans with and without exoskeletons for all kinds of applications and allow an evaluation of their purpose. Practical Relevance: This article highlights the possibilities of musculoskeletal models for assessing the design and efficiency of occupational exoskeletons. Several practical use cases are described along with distinct descriptions of common implications of musculoskeletal and exoskeleton modeling.}, language = {en} } @article{AuerSuessDendorfer, author = {Auer, Simon and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Using markerless motion capture and musculoskeletal models: An evaluation of joint kinematics}, series = {Technology and Health Care}, journal = {Technology and Health Care}, publisher = {IOS Press}, issn = {0928-7329}, doi = {10.3233/THC-240202}, pages = {1 -- 10}, abstract = {BACKGROUND: This study presents a comprehensive comparison between a marker-based motion capture system (MMC) and a video-based motion capture system (VMC) in the context of kinematic analysis using musculoskeletal models. OBJECTIVE: Focusing on joint angles, the study aimed to evaluate the accuracy of VMC as a viable alternative for biomechanical research. METHODS: Eighteen healthy subjects performed isolated movements with 17 joint degrees of freedom, and their kinematic data were collected using both an MMC and a VMC setup. The kinematic data were entered into the AnyBody Modelling System, which enables the calculation of joint angles. The mean absolute error (MAE) was calculated to quantify the deviations between the two systems. RESULTS: The results showed good agreement between VMC and MMC at several joint angles. In particular, the shoulder, hip and knee joints showed small deviations in kinematics with MAE values of 4.8∘, 6.8∘ and 3.5∘, respectively. However, the study revealed problems in tracking hand and elbow movements, resulting in higher MAE values of 13.7∘ and 27.7∘. Deviations were also higher for head and thoracic movements. CONCLUSION: Overall, VMC showed promising results for lower body and shoulder kinematics. However, the tracking of the wrist and pelvis still needs to be refined. The research results provide a basis for further investigations that promote the fusion of VMC and musculoskeletal models.}, language = {en} } @inproceedings{AurbachJungtaeublSpickaetal., author = {Aurbach, Maximilian and Jungt{\"a}ubl, Dominik and Spicka, Jan and Dendorfer, Sebastian}, title = {EMG-based validation of musculoskeletal models considering crosstalk}, series = {World Congress Biomechanics, 28-30 June 2018, Dublin}, booktitle = {World Congress Biomechanics, 28-30 June 2018, Dublin}, doi = {10.1109/BIOMDLORE.2018.8467211}, abstract = {BACKGROUND: Validation and verification of multibody musculoskeletal models sEMG is a difficult process because of the reliability of sEMG data and the complex relationship of muscle force and sEMG. OBJECTIVE: This work aims at comparing experimentally recorded and simulated muscle activities considering a numerical model for crosstalk. METHODS: For providing an experimentally derived reference data set, subjects were performing elevations of the arm, where the activities of the contemplated muscle groups were measured by sEMG sensors. Computed muscle activities were further processed and transformed into an artificial electromyographical signal, which includes a numerical crosstalk model. In order to determine whether the crosstalk model provides a better agreement with the measured muscle activities, the Pearson correlation coefficient has been computed as a qualitative way of assessing the curve progression of the data sets. RESULTS: The results show an improvement in the correlation coefficient between the experimental data and the simulated muscle activities when taking crosstalk into account. CONCLUSIONS: Although the correlation coefficient increased when the crosstalk model was utilized, it is questionable if the discretization of both, the crosstalk and the musculoskeletal model, is accurate enough.}, language = {en} }