Table 1. Means (±standard deviations) of the sEMG and COP variables before and after static- stretching protocol for stretched and non-stretched lower limbs.

Measure	Variable	Lower Limb	Conditions
			Pre-Stretching	Post-Stretching
				Immediately	10 min.	20 min.
sEMG	Median Frequency (Hz)	STR	90.3 (17.0)	89.4 (18.0)	89.7 (18.0)	84.0 (22.0)
		NSTR	88.1 (14.0)	83.6 (13.7)	-	-
COP	Speed (a-p) (mm·s-1)	STR	28.1 (5.7)	29.9 (10.3)	26.5 (5.7)	25.1 (7.1)
		NSTR	26.2 (6.3)	28.5 (9.8)	---	---
	Speed (m-l) (mm·s-1)	STR	23.2 (5.3)	26.6 (14.6)	22.5 (6.2)	21.7 (4.69)
		NSTR	21.1 (3.8)	21.9 (5.1)	---	---
	Frequency (a-p) (Hz)	STR	1.06 (.24)	.87 (.16)	.96 (.20)	.84 (.23)
		NSTR	1.1 (.28)	.82 (.18)	---	---
	Frequency (m-l) (Hz)	STR	.65 (.23)	.62 (.25)	.72 (.36)	.59 (.19)
		NSTR	.51 (.19)	.74 (.28)	---	---

STR = stretched lower limb; NSTR = non-stretched lower limb.