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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 s1). 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.