Figure 7.

Assessing the rate of energy dissipation over hop cycles. Average (±s.e.) net limb work (energy) during continuous hop cycles (p, p⁺¹, p⁺², p⁺³, p⁺⁴) for the 5 cm (a), 10 cm (b) and 20 cm (c) drop heights compared with the change in the potential energy (PE) due to the drop height (h). Net limb energy (J) was calculated as the sum of the ankle, knee and hip net powers multiplied by the cycle duration for each hop cycle. The average change in PE (grey bar) was calculated for each subject as the product of subject mass (m), gravity (g) and drop height (h). (Online version in colour.)