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The validity and reliability of a single-leg hop test to assess the postural control of Judokas 5 years after anterior cruciate ligament rupture

  • Anterior cruciate ligament rupture with subsequent reconstruction (ACLR) is a common and serious injury in Judo. Athletes rarely return to the peak of performance or are limited in their ability to perform their sport. Performance tests for ACLR are still immature and often unspecific. In Judo, the ability to stand on one's feet is an essential prerequisite for many situations. An unstable standing position also promotes knee injuries. In order to check the stability of the single leg stand, a controlled test-re-test design is used in the present study. Two groups are included: A (n=27): Judoka without anamnestically relevant injuries of the lower extremities or the back and B (n=17): Judoka 5.06 ± 1.06 years after ACLR. A one-legged hop test up on a piezoelectric force plate is examined for reliability with respect to the test repetition and validity with regard to the predicted identification of deficits in a side-by-side comparison. In this test, the test person jumps with one leg on the force plate at a defined distance and triesAnterior cruciate ligament rupture with subsequent reconstruction (ACLR) is a common and serious injury in Judo. Athletes rarely return to the peak of performance or are limited in their ability to perform their sport. Performance tests for ACLR are still immature and often unspecific. In Judo, the ability to stand on one's feet is an essential prerequisite for many situations. An unstable standing position also promotes knee injuries. In order to check the stability of the single leg stand, a controlled test-re-test design is used in the present study. Two groups are included: A (n=27): Judoka without anamnestically relevant injuries of the lower extremities or the back and B (n=17): Judoka 5.06 ± 1.06 years after ACLR. A one-legged hop test up on a piezoelectric force plate is examined for reliability with respect to the test repetition and validity with regard to the predicted identification of deficits in a side-by-side comparison. In this test, the test person jumps with one leg on the force plate at a defined distance and tries to stand as still as possible, which means that hardly any horizontal force is generated. Both tests are carried out one after the other with both legs and with sufficient break twice each. In group A, there were no significant differences (p>0.05) between the subjectively better leg and the subjectively worse leg, or the leg in the front and rear of the kumi-kata in Judo. In group B, in the first experiment with the ACLR leg, the test persons generate a significantly higher horizontal force in a 95% confidence interval of the bilateral coefficient of CI=[0.16-0.76] compared to the side not affected (p=0.017). In the test repetition, Group B generates with the affected leg significantly less horizontal force surges than in the first attempt. No significant differences in lateral comparison could be measured, although there is a reliability coefficient of r=0.89 for the ACLR leg, but only r=0.35 for the unaffected leg and r=0.53 for group A. It is concluded that the test for asymptomatic judokas cannot be regarded as sufficiently selective due to the low requirement. In group B, in the second experiment, a feed-forward model including pre-activation based on empirical values from the first experiment could explain the improvement, which has led to no significant differences between legs.show moreshow less

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Metadaten
Author: Robert PrillORCiDGND, Sven MichelGND, Titus Martin, Alexander Braun, Jana Kirschner
URL:http://mdi-online.net/MDI/images/Streszczenia_Abstracts_MDI_2018_WEB.pdf
ISBN:978-83-88380-76-1
Title of the source (Polnisch):Międzynarodowy Dzień Inwalidy, XXIV- Edycja, Życie bez bólu, Zdrowe Dzieci-Zdrowa Europa, Zgorzelec, 15-17 marca 2018
Publisher:Obrzeża Oficyna Wydawnicza
Place of publication:Zgorzelec
Document Type:Conference Proceeding
Language:English
Year of publication:2018
Tag:Anterior cruciate ligament; Validty; back to competition; knee
First Page:S. 81
Faculty/Chair:Fakultät 4 Humanwissenschaften (bis 2023 Soziale Arbeit, Gesundheit und Musik) / FG Therapiewissenschaften II
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