Table 2.

Peak values (means ± s.d.) of smoothed rectified EMG (srEMG) observed in subjects (n = 6) hopping at 1.7 Hz at four different heights. Peak srEMG values have been normalized for the peak values observed when subjects were hopping as high as possible (condition HIGH). Means that do not share subscripts differ at p < 0.05.

muscle	HIGH	INTH	INTL	LOW
m. gluteus maximus	1.0a	0.7b ± 0.2	0.7ab ± 0.4	0.6ab ± 0.4
m. biceps femoris	1.0a	0.8a ± 0.3	0.9a ± 0.2	0.6b ± 0.3
m. rectus femoris	1.0a	0.8b ± 0.1	0.6bc ± 0.2	0.4c ± 0.1
m. vastus lateralis	1.0a	0.9a ± 0.2	0.7ab ± 0.3	0.7b ± 0.3
m. gastrocnemius	1.0a	0.8a ± 0.2	0.7b ± 0.1	0.7b ± 0.1
m. soleus	1.0a	0.7b ± 0.2	0.6b ± 0.2	0.6b ± 0.1