Fig. 4.
Mechanism of proactive stability control. (a) The line of fit at total between proactive stability and COM position (PCOM/BOS) (solid line) and velocity (VCOM/BOS) (dashed line) relative to the BOS across all trials. (b) The line of fit at total between PCOM/BOS and pre-step length normalized by individual’s body height (bh) (solid line) and trunk angle (dashed line) across all trials. PCOM/BOS was normalized to individual’s foot length (lBOS) and VCOM/BOS was normalized to a dimensionless fraction of square root of gravity (g) and body height (bh). The significant predictors are indicated by *p < 0.05