Fig. 5. Histograms showing mean stretch, shortening and net strain between level and incline hopping in the (A) biceps femoris (BF) and (B) vastus lateralis (VL) (averaged for 3.3 and 4.2 m s^–1). Insets indicate regions for which strains were measured during stance. The BF exhibited significantly greater shortening during inclined hopping (P<0.001), which produced significantly greater net shortening during stance (P<0.001). Due to high levels of variation, there were no significant differences in strain between level and incline hopping or between sites in the VL. Error bars represent ± 1 s.e.m.