. 2023 Dec 1;22(4):605–613. doi: 10.52082/jssm.2023.605

Table 2.

Pre-training vs. post-training values for the measured variables.

Variable	Group	Testing time		Statistics
Variable	Group	Pre	Post	Statistics
Vertical jump (cm)	SIT	50.3 ± 6.7	54.4 ± 6.8^*^‡	G = 0.41
	SSIT	50.8 ± 6.1	56.9 ± 6.2^*^‡	T = 0.001
	CON	50.9 ± 4.7	50.7 ± 4.5	G × T = 0.001
Standing long jump (cm)	SIT	273.3 ± 16.8	275.2 ± 15.4	G = 0.86
	SSIT	272.1 ± 16.0	276.7 ± 14.0	T = 0.21
	CON	273.6 ± 17.0	272.9 ± 17.7	G × T = 0.45
20-m sprint (sec)	SIT	3.81 ± 0.31	3.70 ± 0.35^*^‡	G = 0.87
	SSIT	3.86 ± 0.25	3.70 ± 0.19^*^‡	T = 0.001
	CON	3.80 ± 0.27	3.81 ± 0.27	G × T = 0.002
1RM leg press (kg)	SIT	288.0 ± 12.0	293.0 ± 13.1	G = 0.24
	SSIT	290.0 ± 13.3	294.5 ± 11.8	T = 0.51
	CON	286.0 ± 11.7	285.0 ± 11.3	G × T = 0.33
T-test (sec)	SIT	12.02 ± 0.46	11.80 ± 0.46^*^‡	G = 0.60
	SSIT	12.10 ± 0.39	11.68 ± 0.31^*^‡	T = 0.001
	CON	12.06 ± 0.33	12.03 ± 0.32	G × T = 0.001
Illinois agility test (sec)	SIT	18.24 ± 0.38	17.41 ± 0.41^*^‡	G = 0.18
	SSIT	18.14 ± 0.41	17.16 ± 0.55^^‡^*	T = 0.001
	CON	18.19 ± 0.31	18.20 ± 0.30	G × T = 0.001
Yo-Yo IR1 (m)	SIT	1484.0 ± 118.4	1760.0 ± 122.5^*^‡	G = 0.34
	SSIT	1466.0 ± 147.5	1814.0 ± 110.7^^‡^*	T = 0.001
	CON	1456.0 ± 169.9	1444.0 ± 139.7	G × T = 0.001
V̇O₂max (ml/kgmin/kg)	SIT	48.86 ± 0.99	51.25 ± 1.07^*^‡	G = 0.18
	SSIT	48.70 ± 1.23	51.63 ± 0.93^*^‡	T = 0.001
	CON	48.62 ± 1.42	48.52 ± 1.17	G × T = 0.001
Testosterone (nmol/L)	SIT	15.07 ± 2.60	19.30 ± 2.73^*^‡	G = 0.64
	SSIT	14.76 ± 2.76	19.15 ± 2.54^*^‡	T = 0.001
	CON	14.42 ± 2.24	14.00 ± 2.24	G × T = 0.001
Cortisol (nmol/L)	SIT	451.2 ± 81.7	421.7 ± 72.2^*^‡	G = 0.60
	SSIT	458.2 ± 90.0	402.9 ± 75.2^*^‡	T = 0.001
	CON	456.6 ± 67.0	458.4 ± 64.6	G × T = 0.001

SIT: sprint interval training, SSIT: sport-specific SIT, CON: control group.

*Compared to pre,

‡ compared to CON,

** differences between training groups.