Document Type
Article
Language
eng
Publication Date
1-2016
Publisher
Lippincott Williams & Wilkins, Inc.
Source Publication
Journal of Strength and Conditioning Research
Source ISSN
1064-8011
Original Item ID
DOI: 10.1519/JSC.0000000000001069
Abstract
Hip external rotator strength is associated with better dynamic control of the lower extremity during landing tasks. J Strength Cond Res 30(1): 282–291, 2016—The purpose of this study was to determine the association between hip strength and lower extremity kinematics and kinetics during unanticipated single-leg landing and cutting tasks in collegiate female soccer players. Twenty-three National Collegiate Athletic Association division I female soccer players were recruited for strength testing and biomechanical analysis. Maximal isometric hip abduction and external rotation strength were measured using a hand-held dynamometer and expressed as muscle torque (force × femoral length) and normalized to body weight. Three-dimensional lower extremity kinematics and kinetics were assessed with motion analysis and force plates, and an inverse dynamics approach was used to calculate net internal joint moments that were normalized to body weight. Greater hip external rotator strength was significantly associated with greater peak hip external rotation moments (r = 0.47; p = 0.021), greater peak knee internal rotation moments (r = 0.41; p = 0.048), greater hip frontal plane excursion (r = 0.49; p = 0.017), and less knee transverse plane excursion (r = -0.56; p = 0.004) during unanticipated single-leg landing and cutting tasks. In addition, a statistical trend was detected between hip external rotator strength and peak hip frontal plane moments (r = 0.39; p = 0.06). The results suggest that females with greater hip external rotator strength demonstrate better dynamic control of the lower extremity during unanticipated single-leg landing and cutting tasks and provide further support for the link between hip strength and lower extremity landing mechanics.
Recommended Citation
Malloy, Philip; Morgan, Alexander; Meinerz, Carolyn M.; Geiser, Christopher; and Kipp, Kristof, "Hip External Rotator Strength Is Associated With Better Dynamic Control of the Lower Extremity During Landing Tasks" (2016). Exercise Science Faculty Research and Publications. 85.
https://epublications.marquette.edu/exsci_fac/85
Comments
Accepted version. Journal of Strength and Conditioning Research, Vol. 30, No. 1 (January 2016): 282-291. DOI. © 2016 by the National Strength & Conditioning Association. Used with permission.