Effects of High and Low Training Volume with the Nordic Hamstring Exercise on Hamstring Strength, Jump Height, and Sprint Performance in Female Football Players: A Randomised Trial

Table 2

Pre- and post-test results in the countermovement jump test and 40 m sprint for the high- (N = 16) and low-volume groups (N = 14). Two participants are missing because they did not perform the test or there was a measurement error. Results are presented as mean ± standard deviation.

	High-volume group			Low-volume group			Between-groups value
	Pre	Post	value	Pre	Post	value
Countermovement jump
Jump height (cm)	31.9 ± 5.7	31.1 ± 5.9	0.08	29.4 ± 5.0	29.6 ± 5.2	0.69	0.20
Sprint
10 m (s)	2.01 ± 0.06	2.03 ± 0.08	0.31	2.05 ± 0.12	2.06 ± 0.14	0.71	0.66
20 m (s)	3.44 ± 0.11	3.45 ± 0.13	0.45	3.52 ± 0.21	3.54 ± 0.23	0.52	0.99
30 m (s)	4.79 ± 0.16	4.80 ± 0.18	0.85	4.93 ± 0.30	4.96 ± 0.33	0.46	0.67
40 m (s)	6.15 ± 0.22	6.15 ± 0.24	0.85	6.35 ± 0.41	6.37 ± 0.44	0.65	0.65