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Mean body (top) and ankle (bottom) angle (deg) relative to normal condition (= 0 for body angle, = 90 for ankle angle). Schematic representation of the relative change in body and ankle angle is shown in the middle panel. In all conditions (particularly the toes-up condition) the body changes its postural configuration. (*) indicates significance of P<0.05, and (**) indicates P<0.001.
