Passive knee-extension test to measure hamstring tightness: influence of gravity correction

Details

Serval ID
serval:BIB_8825CD9DFE87
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Passive knee-extension test to measure hamstring tightness: influence of gravity correction
Journal
Journal of Sport Rehabilitation
Author(s)
Guex K., Fourchet F., Loepelt H., Millet G.P.
ISSN
1543-3072
ISSN-L
1056-6716
Publication state
Published
Issued date
2012
Peer-reviewed
Oui
Volume
21
Number
3
Pages
231-234
Language
english
Notes
Porte aussi le no 22894976 dans Pubmed
Abstract
CONTEXT: A passive knee-extension test has been shown to be a reliable method of assessing hamstring tightness, but this method does not take into account the potential effect of gravity on the tested leg.
OBJECTIVE: To compare an original passive knee-extension test with 2 adapted methods including gravity's effect on the lower leg.
DESIGN: Repeated measures.
SETTING: Laboratory.
PARTICIPANTS: 20 young track and field athletes (16.6 ± 1.6 y, 177.6 ± 9.2 cm, 75.9 ± 24.8 kg).
INTERVENTION: Each subject was tested in a randomized order with 3 different methods: In the original one (M1), passive knee angle was measured with a standard force of 68.7 N (7 kg) applied proximal to the lateral malleolus. The second (M2) and third (M3) methods took into account the relative lower-leg weight (measured respectively by handheld dynamometer and anthropometrical table) to individualize the force applied to assess passive knee angle.
MAIN OUTCOME MEASURES: Passive knee angles measured with video-analysis software.
RESULTS: No difference in mean individualized applied force was found between M2 and M3, so the authors assessed passive knee angle only with M2. The mean knee angle was different between M1 and M2 (68.8 ± 12.4 vs 73.1 ± 10.6, P < .001). Knee angles in M1 and M2 were correlated (r = .93, P < .001).
CONCLUSIONS: Differences in knee angle were found between the original passive knee-extension test and a method with gravity correction. M2 is an improved version of the original method (M1) since it minimizes the effect of gravity. Therefore, we recommend using it rather than M1.
Pubmed
Web of science
Create date
17/08/2012 13:05
Last modification date
20/08/2019 14:47
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