Lower extremity coordination strategies to mitigate dynamic knee valgus during landing in males and females.

Autor: Dennis JD; Department of Kinesiology, California State University, Fullerton, CA, United States; Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States. Electronic address: jddennis@unc.edu., Choe KH; Department of Kinesiology, California State University, Fullerton, CA, United States; Department of Kinesiology, Whittier College, Whittier, CA, United States., Montgomery MM; Department of Kinesiology, California State University, Fullerton, CA, United States., Lynn SK; Department of Kinesiology, California State University, Fullerton, CA, United States., Crews BM; Department of Kinesiology, California State University, Fullerton, CA, United States; Sanford Sports, Sanford Health, Irvine, CA, United States., Pamukoff DN; School of Kinesiology, Western University, London, ON, Canada.
Jazyk: angličtina
Zdroj: Journal of biomechanics [J Biomech] 2023 Jul; Vol. 156, pp. 111689. Date of Electronic Publication: 2023 Jun 19.
DOI: 10.1016/j.jbiomech.2023.111689
Abstrakt: Frontal and sagittal plane landing biomechanics differ between sexes but reported values don't account for simultaneous segment or joint motion necessary for a coordinated landing. Frontal and sagittal plane coordination patterns, angles, and moments were compared between 28 males and 28 females throughout the landing phase of a drop vertical jump. Females landed with less isolated thigh abduction (p = 0.018), more in-phase motion (p < 0.001), and more isolated shank adduction (p = 0.028) between the thigh and shank in the frontal plane compared with males. Females landed with less in-phase (p = 0.012) and more anti-phase motion (p = 0.019) between the thigh and shank in the sagittal plane compared with males. Females landed with less isolated knee flexion (p = 0.001) and more anti-phase motion (p < 0.001) between the sagittal and frontal plane knee coupling compared with males. Waveform and discrete metric analyses revealed females land with less thigh abduction from 20 % to 100 % and more shank abduction from 0 to 100 % of landing, smaller knee adduction at initial contact (p = 0.002), greater peak knee abduction angles (p = 0.015), smaller knee flexion angles at initial contact (p = 0.035) and peak (p = 0.034), greater peak knee abduction moments (p = 0.024), greater knee abduction angles from 0 to 13 % and 19 to 30 %, greater knee abduction moments from 19 to 25 %, and smaller knee flexion moments from 3 to 5 % of landing compared with males. Females utilize greater frontal plane motion compared with males, which may be due to different inter-segmental joint coordination and smaller sagittal plane angles. Larger knee abduction angles and greater knee adduction motion in females are due to aberrant shank abduction rather than thigh adduction.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Published by Elsevier Ltd.)
Databáze: MEDLINE
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