TABLE 8.

Comparison of root-means-squares of EMG voltages for squat jump and countermovement jump between experimental and control groups before (pre) and after (post) the 8-week trial.

	Experimental group (n = 15)		Control group (n = 12)		Kruskal–Wallis H
	Pre	Post	Pre	Post	p	D (Cohen)
Squat jump
RMS.VM (%)	96.82 ± 4.89	99.53 ± 0.97	99.26 ± 2.17	95.82 ± 5.00	0.088	0.29
RMS.VL (%)	91.57 ± 12.10	99.69 ± 0.55*	96.14 ± 8.43	95.47 ± 6.22	0.001	0.39
RMS.RF (%)	98.16 ± 3.01	99.81 ± 0.35*	96.46 ± 5.12	97.75 ± 2.35	0.003	0.35
Countermovement jump
RMS.VM (%)	86.93 ± 20.66	95.34 ± 13.12	95.97 ± 6.26	95.77 ± 11.86	0.759	0.00
RMS.VL (%)	97.12 ± 4.15	99.23 ± 1.31	96.40 ± 5.24	97.51 ± 7.01	0.880	0.00
RMS.RF (%)	96.73 ± 4.07	99.60 ± 0.68	95.20 ± 9.84	97.82 ± 7.04	0.578	0.01

Non-parametric Kruskal–Wallis H-test assessed a main effect group × time. *p < 0.05.