Fig. 2. Power output during flash-induced fibre shortening. (A) Power output recordings under four different afterloads. (B) Power output records normalized relative to the peak values attained. The load was 0.09 P_o (a, a'), 0.35 P_o (b, b'), 0.53 P_o (c, c') and 0.78 P_o (d). The recordings were obtained from the experiment shown in Fig. 1.