Table 3.

Correlation coefficients between the percentage of slow and each fast type (typeIIA, typeIIX, and typeIIB) fibers and muscle activity at various activity levels. Significant differences (*p < 0.05) between all muscles (n = 6).

	Duty time
	2%	5%	20%	50%
Slow-type fibers	0.86	0.82	0.63	−0.41
Fast-type fibers
typeIIA	0.32	0.10	−0.15	−0.50
typeIIX	0.10	0.25	0.50	0.93*
typeIIB	−0.73	−0.72	−0.78	−0.60