Fig. 2.

Weight shift. A: time course of F_z for chair rises from the middle foot position at each movement speed for healthy untrained (HU; red) and Alexander technique (AT; green). The shaded area indicates the 95% confidence interval (CI), and the dotted line indicates seat-off (SO). B: T_ws for all conditions (±SD). B, M, and F, back, middle and forward foot position, respectively. C: $F_z^{\prime }$ max for all conditions. While AT gradually increased F_z up through SO, HU rapidly and abruptly increased feet force just before SO, which was particularly pronounced for slow trials. BW, body weight.