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Figure 6


Fig. 6. (A) A schematic showing the timing of electromyogram (EMG) activity in the biceps femoris (BF) (white) and vastus lateralis (VL) (dark grey) relative to the stride cycle. EMG onset occurred at the same time in both muscles and tended to occur later in the cycle during incline hopping, which led to the muscle tending to be active for a greater portion of stance phase. (B) EMG intensity, measured as normalized mean spike amplitude (MSA), did not differ significantly between level and incline hopping in either muscle. Error bars represent ± 1 s.e.m.





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