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. Author manuscript; available in PMC: 2019 Jun 6.

Published in final edited form as: J Biomech. 2018 Apr 24;74:106–115. doi: 10.1016/j.jbiomech.2018.04.029

Fig. 1 — The net external moment components are shown in the sagittal, frontal and transverse planes during single-leg-stance. Whole-body center-of-mass (CoM) is shown with ‘ ’. The ground-reaction-force (GRF) vectors and their corresponding moment arms appear in the same color. During single-leg-stance, only the stance leg contributes to the net external moment about the body CoM. In each plane, the net external moment consists of two moment arm and GRF components. For instance, in the frontal plane, only the vertical and mediolateral moment arms and GRFs contribute to the net external moment and the regulation of whole-body angular-momentum. Here, we focus on analyzing the moment arms to further understand the regulation of whole-body angular-momentum.

Inline graphic — The net external moment components are shown in the sagittal, frontal and transverse planes during single-leg-stance. Whole-body center-of-mass (CoM) is shown with ‘ ’. The ground-reaction-force (GRF) vectors and their corresponding moment arms appear in the same color. During single-leg-stance, only the stance leg contributes to the net external moment about the body CoM. In each plane, the net external moment consists of two moment arm and GRF components. For instance, in the frontal plane, only the vertical and mediolateral moment arms and GRFs contribute to the net external moment and the regulation of whole-body angular-momentum. Here, we focus on analyzing the moment arms to further understand the regulation of whole-body angular-momentum.