Fig. 3. Force depression (% isometric force) induced by rapid shortening through various distances (shortening distance expressed as a percentage of stretch distance in the corresponding stretch-shortening contraction for consistency with the other figures). Top axis gives corresponding final fibre length relative to optimal length (L_opt). Error bars indicate means ± s.e.m. Labels give number of fibres (N) when this was less than six. ^*Different from zero, P<0.05.