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European Journal of Applied Physiology

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01-08-2018 | Original Article

Isometric strength of the hip abductors and external rotators in athletes with and without patellar tendinopathy

Authors: Z. J. Zhang, W. C. Lee, G. Y. F. Ng, S. N. Fu

Published in: European Journal of Applied Physiology | Issue 8/2018

Abstract

Purpose

This study aims to compare the isometric strength of hip abductors and external rotators in male athletes with and without patellar tendinopathy (PT), and to examine the correlation between hip strength, pain, and functional scores.

Methods

Sixty male athletes (30 with PT and 30 controls) were recruited from local volleyball and basketball teams. The isometric strength of the hip abductors and external rotators was quantified using a belt-stabilized handheld dynamometer. This study used the visual analog scale (VAS) and the Victorian Institute of Sport Assessment-Patella (VISA-p) questionnaire to measure the intensity of pain and functional scores in athletes with PT, respectively.

Results

The normalized isometric strength of the hip abductors and external rotators was significantly less in the PT group compared with controls. In subjects with PT, the normalized isometric strength was decreased by 22.0% (p = 0.000) in the hip abductors and by 20.0% in the hip external rotators (p = 0.004), compared with controls. Significant correlations were found between the normalized isometric strength of the hip abductors and intensity of pain (r = − 0.70; p < 0.05) and VISA-p score (r = 0.63; p < 0.05) in the affected leg in athletes with unilateral PT.

Conclusions

Athletes with PT have decreased isometric strength in their hip abductors and external rotators when compared with controls. In subjects with unilateral PT, decreased isometric strength in the hip abductors is associated with greater intensity of pain and lower functional scores. Results of this study implied that hip muscle assessment and strengthening should be included for reconditioning and rehabilitation in athletes with PT.

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Title: Isometric strength of the hip abductors and external rotators in athletes with and without patellar tendinopathy
Authors: Z. J. Zhang
W. C. Lee
G. Y. F. Ng
S. N. Fu
Publication date: 01-08-2018
Publisher: Springer Berlin Heidelberg
Published in: European Journal of Applied Physiology / Issue 8/2018
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-018-3896-x

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Isometric strength of the hip abductors and external rotators in athletes with and without patellar tendinopathy

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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