@misc{JahnkeCruysenPrilletal., author = {Jahnke, Sonja and Cruysen, Caren and Prill, Robert and Kittmann, Fabian and Pflug, Nicola and Albert, Justin Amadeus and Camargo, Tibor de and Arnrich, Bert and Krolikowska, Aleksandra and Kolcz, Anna and Reichert, Pawel and Oleksy, Lukasz and Michel, Sven and Kopf, Sebastian and Wagner, Michael and Scheffler, Sven and Becker, Roland}, title = {Protocol for a Randomized Crossover Trial to Evaluate the Effect of Soft Brace and Rigid Orthosis on Performance and Readiness to Return to Sport Six Months Post‑ACL‑Reconstruction}, series = {Healthcare}, volume = {11}, journal = {Healthcare}, number = {4}, issn = {2227-9032}, doi = {10.3390/healthcare11040513}, abstract = {A randomized crossover trial was designed to investigate the influence of muscle activation and strength on functional stability/control of the knee joint, to determine whether bilateral imbalances still occur six months after successful anterior cruciate ligament reconstruction (ACLR), and to analyze whether the use of orthotic devices changes the activity onset of these muscles. Furthermore, conclusions on the feedforward and feedback mechanisms are highlighted. Therefore, twenty‑eight patients will take part in a modified Back in Action (BIA) test battery at an average of six months after a primary unilateral ACLR, which used an autologous ipsilateral semitendinosus tendon graft. This includes double‑leg and single‑leg stability tests, double‑leg and single‑leg countermovement jumps, double‑leg and single‑leg drop jumps, a speedy jump test, and a quick feet test. During the tests, gluteus medius and semitendinosus muscle activity are analyzed using surface electromyography (sEMG). Motion analysis is conducted using Microsoft Azure DK and 3D force plates. The tests are performed while wearing knee rigid orthosis, soft brace, and with no aid, in random order. Additionally, the range of hip and knee motion and hip abductor muscle strength under isometric conditions are measured. Furthermore, patient‑rated outcomes will be assessed.}, language = {en} } @misc{KotlarskiKeulerBossingChristensenetal., author = {Kotlarski, Sven and Keuler, Klaus and B{\o}ssing Christensen, Ole and Colette, Augustin and D{\´e}qu{\´e}, Michel}, title = {Regional climate modeling on European scales: A joint standard evaluation of the EURO-CORDEX RCM ensemble}, series = {Geoscientific Model Development}, journal = {Geoscientific Model Development}, number = {7}, doi = {10.5194/gmd-7-1297-2014}, pages = {1297 -- 1333}, language = {en} } @inproceedings{SchachtPunchMertenetal., author = {Schacht, Ralph and Punch, Jeff and Merten, Enrico and Rzepka, Sven and Michel, Bernd}, title = {Thermo-fluidisch gekoppelte Untersuchung von Flip-Chips auf einer Leiterplatte}, series = {Elektronische Baugruppen und Leiterplatten EBL 2016, 8. DVS/GMM-Tagung vom 16.-17. Februar 2016 in Fellbach}, booktitle = {Elektronische Baugruppen und Leiterplatten EBL 2016, 8. DVS/GMM-Tagung vom 16.-17. Februar 2016 in Fellbach}, editor = {Schacht, Ralph}, publisher = {VDE Verlag}, address = {Berlin, Offenbach}, isbn = {978-3-8007-4147-2}, pages = {267 -- 272}, abstract = {Die Konzentration von elektronischen und mechanischen Komponenten auf einer Leiterplatte (z.B. Main board) nimmt st{\"a}ndig zu. Dies f{\"u}hrt zu h{\"o}heren Verlustleistungsdichten und somit zu strengeren Anforderungen an das thermische Management. In momentanen und zuk{\"u}nftigen luftgek{\"u}hlten Anwendungen wird, neben der reinen konduktiven Interaktion zwischen elektronischen Komponenten {\"u}ber die Leiterplatte, zuk{\"u}nftig auch die fluidische Interaktion der nat{\"u}rlichen und forcierten Konvektion w{\"a}hrend des Leiterplattendesigns mit zu ber{\"u}cksichtigen sein. Der Schaltkreisentwickler ben{\"o}tigt hier zus{\"a}tzliche Informationen {\"u}ber die thermo-fluidisch gekoppelten Einfl{\"u}sse zwischen den kritischen w{\"a}rmedissipierenden Komponenten sowie fluidischer {\"U}berlagerungen in Folge anderer angrenzender Komponenten oder mechanischer Komponentengeh{\"a}use. In der Vergangenheit wurden zahlreiche Benchmark-Studien zu konvektiven und konduktiven thermischen Interaktionen f{\"u}r verschiedene kommerziell erh{\"a}ltliche mikroelektrische Geh{\"a}usetypen ver{\"o}ffentlicht. Heutzutage hat sich die Flip-Chip (FC) Aufbautechnologie von ungeh{\"a}usten Chips (bare dies) etabliert. Von daher besteht der Bedarf f{\"u}r eine thermische Benchmark Studie f{\"u}r FC Aufbauten. Die vorliegende Studie untersucht die nat{\"u}rlichen und forcierten thermo-fluidischen Einfl{\"u}sse zwischen ungeh{\"a}usten FC's und anderen Komponenten, welche auf mehreren Testleiterplattendesigns aufgebaut und mit der CFD-Simulation verglichen wurden. Ein Vergleich der ersten analysierten Scenarios zeigt eine nachvollziehbare {\"U}bereinstimmung zwischen den experimentellen und den Simulationsergebnissen.}, language = {de} } @inproceedings{AboRasMaySchachtetal., author = {Abo Ras, Mohamad and May, Daniel and Schacht, Ralph and Bast, M. and Eisle, R. and Michel, Bernd and Winkler, Thomas and Rzepka, Sven and Wunderle, Bernhard}, title = {"LaTIMA" an Innovative Test Stand for Thermal and Electrical Characterization of Highly Conductive Metals, Die Attach, and Substrate Materials}, series = {21st International Workshop on Thermal Investigations of ICs and Systems, Sept. 30 2015 - Oct. 2 2015}, booktitle = {21st International Workshop on Thermal Investigations of ICs and Systems, Sept. 30 2015 - Oct. 2 2015}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4673-9705-6}, pages = {6}, abstract = {This paper deals with the development of an innovative test stand for the measurement of thermal and electrical conductivity of metals, semiconductors, highly conductive die attaches and substrates using the steady state technique for thermal characterization and four-terminal sensing with pulse delta technique for electrical characterization. We present a systematic study of sintered silver in order to investigate the influence of sintering conditions on thermal and electrical properties. Several sintered silver samples have been prepared under sintering temperature variation between 200°C and 270°C and sintering pressure variation between 5 MPa and 25 MPa. The characterization results diversify up to 200\% for thermal conductivity and up to 330\% for electrical conductivity. The Wiedemann-France law describes the relationship between electrical and thermal conductivities for bulk metals. We proved that this law applies not only for bulk metal but also for porous sintered metal.}, language = {en} } @inproceedings{SchachtPunchMertenetal., author = {Schacht, Ralph and Punch, Jeff and Merten, Enrico and Rzepka, Sven and Michel, Bernd}, title = {Thermo-Fluidic Coupled Analysis of Flip-Chip Mounted Thermal Test Chips on a PCB - a Numerical and Experimental Study}, series = {21st International Workshop on Thermal Investigations of ICs and Systems}, booktitle = {21st International Workshop on Thermal Investigations of ICs and Systems}, editor = {Schacht, Ralph}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4673-9705-6}, abstract = {CFD Analysis of Flip-Chip Mounted Devices on PCB - A Numerical and Experimental Study}, language = {en} } @misc{PrillAppellCoriolanoMicheletal., author = {Prill, Robert and Appell Coriolano, Hans-Joachim and Michel, Sven and Alfuth, Martin}, title = {The Influence of the Special Throwing Technique on the Prevalence of Knee Joint Injuries in Judo}, series = {Archives of Budo}, volume = {10}, journal = {Archives of Budo}, issn = {1643-8698}, pages = {211 -- 216}, language = {en} } @misc{PrillKirschnerMicheletal., author = {Prill, Robert and Kirschner, Jana and Michel, Sven and Schulz, Robert and Hommel, Hagen}, title = {Study protocol of a multi-stage randomised controlled study for the assessment of postoperative therapeutic procedures after total knee arthroplasty}, series = {International Journal of Physiotherapy}, volume = {6}, journal = {International Journal of Physiotherapy}, number = {1}, issn = {2348-8336}, doi = {10.15621/ijphy/2018/v5i1/167194}, pages = {13 -- 17}, abstract = {Background There continues to be a lack of evidence to support physiotherapeutic rehabilitation measures after total knee arthroplasty (TKA), especially in the area of functional test procedures, which are indispensable for assessing perioperative physiotherapeutic interventions, including their efficacy. Objective A multi-stage, randomised, controlled study design is concerned with the establishment of an evidence-based perioperative physiotherapeutic treatment programme to evaluate physical functional test procedures with regard to their predictive value and the efficacy of physiotherapeutic interventions. Setting The RCT will be realised in a medical clinic in the department of orthopaedics, sports medicine and rehabilitation. Participants A first stage will include young, healthy subjects (Group A) and subjects who are due to undergo TKA and are then to be treated with a standard rehabilitation programme (Group B). Design Selected promising physical functional test procedures will be tested for their reliability. Inter-tester reliability will be determined in Group A. The test-retest reliability at different perioperative timepoints will be determined in Group B. Measurements The following test procedures will be investigated for reliability: 10-m walk test, timed up and go, three times sit to stand, isometric maximal force of knee extension, stair climbing and the cumulative leg circumference. In addition, these test procedures will be correlated among each other and with the WOMAC and KSS for selected aspects of validity. In a second stage, the reliable test procedures will be applied to investigate selected promising physiotherapeutic interventions. Conclusions The investigation could change perioperative assessments and physiotherapeutic treatment in patients who have undergone TKA.}, language = {en} } @misc{PrillSchulzMichel, author = {Prill, Robert and Schulz, Robert and Michel, Sven}, title = {Tissue flossing: a new short-duration compression therapy for reducing exercise-induced delayed-onset muscle soreness. A randomized, controlled and double-blind pilot cross-over trial}, series = {The Journal of Sports Medicine and Physical Fitness}, volume = {59}, journal = {The Journal of Sports Medicine and Physical Fitness}, number = {5}, issn = {1827-1928}, doi = {10.23736/S0022-4707.18.08701-7}, pages = {861 -- 867}, abstract = {OBJECTIVES: The symptomatic reduction of exercise-induced delayed onset muscle soreness (DOMS) is of great interest in the fields of Sports Medicine and Physical Therapy. At this time, few therapeutic interventions have proven their effectiveness. One of the most promising interventions is Compression Therapy. The object of this study is Tissue Flossing, a therapeutic short-term compression method and whether its post-exercise application can reduce the extent of perceived DOMS. DESIGN: randomized, controlled, and double-blind pilot cross-over trial. METHODS: Participants (n = 17) without any musculoskeletal injuries were recruited from university students. Participants performed an exercise protocol and obtained the intervention subsequently on one of both arms. Participants had to return for a second day to perform the whole procedure again, this time receiving the flossing intervention on the other arm. At both time points their opposite arms served as the control. The primary outcome measure was a patient reported visual analogue scale 100mm. RESULTS: The mean value of DOMS of the flossed arm was 42mm compared to the non-flossed arm with 48mm. Differences were found to be statistically significant at 24 hours- (p=0,036; α=0.05), as well as at 48 hours post-intervention (p=0,035; α=0.05). Effect sizes were dz=0,408 at 24 hours-and dz=0,411 at 48 hours post-intervention. The clean language effect size was 0.66. CONCLUSIONS: Tissue flossing appears to be an effective method for treating DOMS which is slightly less effective but much more practicable than gold standard treatment.}, language = {en} } @misc{PrillMichelSchulzetal., author = {Prill, Robert and Michel, Sven and Schulz, Robert and Appell Coriolano, Hans-Joachim}, title = {Body Composition and Strength Parameters in Elite Judo Athletes 5 Years after Anterior Cruciate Ligament Reconstruction}, series = {International Journal of Sports Medicine}, volume = {40}, journal = {International Journal of Sports Medicine}, number = {1}, issn = {1439-3964}, doi = {10.1055/a-0787-1420}, pages = {38 -- 42}, abstract = {The purpose of this study was to investigate if there are still deficits in muscle mass or strength capabilities in elite judo athletes with a history of anterior cruciate ligament reconstruction (ACLR) after their return to the sport. Therefore, bioimpedance analysis, 3D-laser thigh circumference measurement and isokinetic dynamometry in a closed kinetic chain were used. The side-to-side differences were investigated in a group of judo athletes 5 years after ACLR (n=17) and compared with a group of healthy judo athletes (n=27). Neither thigh circumferences, nor muscle masses of the lower extremities differed in formerly injured judo athletes compared to healthy judo athletes. In contrast, isokinetic strength testing showed a significantly larger side-to-side difference of peak muscle force in formerly injured judo athletes (p=0.021). They provided significantly lower peak forces with the formerly injured leg than with the non-injured leg (p<0.001). The authors conclude that strength capabilities, but not body composition, remains altered in recovered judo athletes in mean 5 years after ACLR and definitely after their return to sports. This indicates that the focus of rehabilitation protocols and return to sports assessments should focus more on maximum strength capabilities.}, language = {en} } @misc{PrillSinghSeeberetal., author = {Prill, Robert and Singh, Jasvinder A. and Seeber, Gesine H. and Mai Nielsen, Sabrina and Goodman, Susan and Michel, Sven and Kopkow, Christian and Schulz, Robert and Choong, Peter and Hommel, Hagen}, title = {Patient, physiotherapist and surgeon endorsement of the core domain set for total hip and total knee replacement in Germany: a study protocol for an OMERACT initiative}, series = {BMJ open}, volume = {10}, journal = {BMJ open}, number = {6}, issn = {2044-6055}, doi = {10.1136/bmjopen-2019-035207}, pages = {8}, language = {en} }