Fig. 6.

Jumping performance. (A) Jumps were performed with and without the semi-lunar process (SLP) for a variety of different extensor tension values. Extensor tension was altered by varying the time between FETi spikes between 10 ms and 23 ms at 1 ms intervals. Twenty jumps were performed at each time interval. Jump distance varied linearly with extensor tension for both cases (R²=0.96 with SLP, R²=0.95 without SLP). Without the SLP the jump distance was reduced by 45% at 15 N, and this reduction increased to 55% at 10 N. (B) Jump distance also varied linearly with the jump energy, and matched the predicted jump distance (R²=0.98). This is consistent with the hypothesized relationship between jump energy and distance (Bennet-Clark, 1975).