Article

The relationship between trunk and lower limb kinematics in healthy females
versus males is unclear since trunk kinematics in the frontal and transverse
planes have not been systematically examined with lower limb kinematics. The aim
of this study was to investigate the existence of different multi-joints movement
strategies between genders during a single leg squat. We expected that compared
to males, females would have greater trunk and pelvis displacement due to less
trunk control and display hip and knee movement consistent with medial-collapse
(i.e. greater hip adduction, hip medial rotation, knee abduction, and knee
lateral rotation) on the weight-bearing limb. Nine females and 10 males
participated in the study. Kinematic data were collected using an 8-camera,
3D-motion-capture-system. Trunk relative to pelvis, pelvis relative to the
laboratory, hip and knee angles in three planes (sagittal, frontal and
transverse) were examined at two time events relevant to knee joint mechanics: 45
degrees of knee flexion and peak knee flexion. Females flexed their trunk less
than males and rotated their trunk and pelvis toward the weight-bearing limb more
than males. Females also displayed greater hip adduction and knee abduction than
males. Taken together these results suggest that females and males used different
movement strategies during a single leg squat. Females displayed a trunk and
pelvic movement pattern that may put them at risk of knee injury and pain.
CI - Copyright (c) 2012 Elsevier B.V. All rights reserved.

Langue : ANGLAIS