Table 3. Changes in isokinetic knee extension muscle strength and endurance

Variables	Strength				Endurance
	Pre	Post	z	p	Pre	Post	z	p
Average speed (cm/s)	11.82±2.18	17.01±6.31*	−1.96	0.05	41.18±11.15	52.31±13.72*	−2.19	0.03
Max speed (cm/s)	36.99±9.20	55.23±14.64*	−2.31	0.02	79.19±19.69	92.69±24.74*	−2.07	0.04
Average force (kgf)	45.36±10.17	45.04±11.30	−0.46	0.69	28.07±6.61	27.78±6.88	−1.13	0.26
Max force (kgf)	61.91±14.40	61.38±13.47	−0.65	0.52	31.71±7.00	33.18±6.92*	−2.19	0.03
Average power (watt)	546.48±189.94	728.92±225.40*	−2.03	0.04	1,144.17±415.43	1,421.65±456.72	−1.72	0.09
Max power (watt)	2,342.91±926.24	3,304.66±909.84*	−1.956	0.05	2,509.65±869.62	3,019.54±910.28*	−2.19	0.03

Data are expressed as means±standard deviations. Tested using Wilcoxon singed-rank test.
p<0.05.