Fig. 2. Average ankle and knee angle and GM MTU length changes (MTU length) with respect to time during walking (A) and running (B) for downhill (-10%; blue), level (0%; green) and uphill (10%; red) conditions. The shaded areas mark the average stance time across each condition and the pooled 95% confidence interval (± 2 s.e.m.) across all grades for both walking and running is shown with respect to the level condition as the area within the dotted lines. The average standard error across each grade condition was equivalent.