Comparative Analysis of Adaptive Changes in Immunoendocrine and Physiological Responses to High-Intensity Sprint Interval Training with Progressive and Nonprogressive Loads in Young Wrestlers

Table 4. Changes in aerobic and anaerobic power from pre- to post-intervention (mean ± SD).

Variables	Pre	Post	Hedge's g (95% CI)	Changes	Significant
VO_2max (mL·kg^-1·min^-1)
P-SSIT	48.86 ± 0.99	51.25 ± 1.07	2.22 (1.11 to 3.33) Very large	â†‘	0.001
NP-SST	48.70 ± 1.23	51.63 ± 0.93	2.57 (1.39 to 3.76) Very large	â†‘	0.007
CON	48.62 ± 1.42	48.52 ± 1.17		â†”	1.000
Post-test comparisons	PSSIT vs. CON		2.33 (1.20 to 3.47) Very large	â†‘	0.048
	NP-SSIT vs. CON		2.82 (1.58 to 4.06) Very large	â†‘	0.050
	P-SSIT vs. NP-SSIT		-0.36 (-1.25 to 0.52) Small	â†”	1.000
Peak power output (w)
P-SSIT	806.9 ± 38.8	879.6 ± 39.1	1.79 (0.75 to 2.82) Large	â†‘	0.001
NP-SST	807.9 ± 59.7	883.6 ± 57.0	1.72 (0.69 to 2.74) Large	â†‘	0.001
CON	805.2 ± 48.3	808.4 ± 50.7		â†”	1.000
Post-test comparisons	PSSIT vs. CON		1.51 (0.51 to 2.50) Large	â†‘	0.001
	NP-SSIT vs. CON		1.34 (0.37 to 2.30) Large	â†‘	0.001
	P-SSIT vs. NP-SSIT		-0.14 (-1.02 to 0.74) Trivial	â†”	1.000
Mean power output (w)
P-SSIT	471.4 ± 24.7	510.5 ± 29.9	1.41 (0.43 to 2.39) Large	â†‘	0.001
NP-SST	472.5 ± 20.4	511.7 ± 19.6	1.88 (0.82 to 2.93) Large	â†‘	0.001
CON	470.6 ± 43.2	471.1 ± 44.7		â†”	1.000
Post-test comparisons	PSSIT vs. CON		0.99 (0.06 to 1.92) Moderate	â†‘	0.007
	NP-SSIT vs. CON		1.13 (0.18 to 2.07) Moderate	â†‘	0.031
	P-SSIT vs. NP-SSIT		-0.05 (-0.92 to 0.83) Trivial	â†”	1.000

P-SSIT: programming volume-loads including progressive; NP-SSIT: nonprogressive; CON: control.