Related Experiment Video
Updated: Feb 7, 2026

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions
Published on: June 16, 2014
Mid-flight lateral trunk bending increased ipsilateral leg loading during landing: a center of mass analysis
Taylour J Hinshaw1, Daniel J Davis1, Jacob S Layer1
1a Division of Kinesiology and Health , University of Wyoming , Laramie , WY , USA.
Abstract:
Increased lateral trunk bending to the injured side has been observed when ACL injuries occur. The purpose was to quantify the effect of mid-flight lateral trunk bending on center of mass (COM) positions and subsequent landing mechanics during a jump-landing task. Forty-one recreational athletes performed a jump-landing task with or without mid-flight lateral trunk bending. When the left and right trunk bending conditions were compared with the no trunk bending condition, participants moved the COM of the upper body to the bending direction, while the COM of the pelvis, ipsilateral leg, and contralateral leg moved away from the bending direction relative to the whole body COM. Participants demonstrated increased peak vertical ground reaction forces (VGRF) and knee valgus and internal rotation angles at peak VGRF for the ipsilateral leg, but decreased peak VGRF and knee internal rotation angles at peak VGRF and increased knee varus angles at peak VGRF for the contralateral leg. Mid-flight lateral trunk resulted in an asymmetric landing pattern associated with increased ACL loading for the ipsilateral leg. The findings may help to understand altered trunk motion during ACL injury events and the discrepancy in ACL injuries related to limb dominance in badminton and volleyball.
Related Concept Videos
The Colonization of Land
Center of Mass
The knowledge of the center of mass can also help us to describe and predict the motion of objects. For example, when a ball is thrown...
Center of Mass: Introduction
Significance of Center of Mass
Equation of Motion: Center of Mass
Internal forces between any pair of particles manifest as collinear pairs of equal magnitude but opposite directions,...
Applications of Integration to Find Centers of Mass

