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. Author manuscript; available in PMC: 2011 Sep 17.
Published in final edited form as: J Biomech. 2010 Jun 9;43(13):2548–2553. doi: 10.1016/j.jbiomech.2010.05.015

Figure 3.

Figure 3

Regression lines by group for (a) step length predicting XCOM/BOS, and (b) gait speed predicting VCOM/BOS. VCOM/BOS is the COM velocity in the anteroposterior direction, normalized as a dimensionless fraction of the square root of the acceleration due to gravity times the height of the subject. XCOM/BOS is the position of the COM in the anteroposterior direction, expressed relative to the forward heel and normalized to foot length; a more negative value indicates a more posterior COM relative to the forward heel (BOS).