. 2021 Jan 8;24(1):54–64. doi: 10.5223/pghn.2021.24.1.54

Table 2. Selected physical and physiological variables before and after exercise.

Measured variable	SBE (n=11)		p-value (pre-post)	HIIT (n=11)		p-value (pre-post)	Control (n=12)		p-value (pre-post)	p-value (between groups)
Measured variable	Pre-test	Post-test	p-value (pre-post)	Pre-test	Post-test	p-value (pre-post)	Pre-test	Post-test	p-value (pre-post)	p-value (between groups)
PS (II/III/IV)	4/3/4	-		5/2/4	-		3/4/5	-
Age (yr)	13.39±0.95	-		12.81±1.02	-		13.14±1.49	-
Weight (kg)	66.46±11.57	64.51±10.40^*†	0.001	63.20±7.47	60.51±7.11^*†	0.001	65.30±12.04	65.63±11.66	0.260	0.001^†
BMI (kg/m²)	26.47±1.74	25.95±2.10^*†	0.001	26.68±2.32	25.35±1.62^*†	0.001	26.45±2.21	26.60±1.99	0.230	0.001^†
WHR	0.956±0.04	0.941±0.04^*†	0.030	0.964±0.06	0.952±0.07^*†	0.009	0.971±0.03	0.975±0.03	0.530	0.040^†
Body fat percentage	30.42±2.08	29.74±1.99^*†	0.001	30.37±1.95	29.99±1.72^*†	0.001	31.41±1.19	31.54±1.16	0.231	0.001^†
VO_2peak (mL·kg⁻¹·min⁻¹)	35.08±3.36	37.33±2.58^*†	0.001	35.38±2.33	38.70±1.68^*†‡	0.001	35.01±2.97	35.23±2.68	0.215	0.001^†‡

Values are presented as number only or mean±standard deviation.

SBE: school-based exercise, HIIT: high-intensity interval training, PS: parenchymal sonography, BMI: body mass index, WHR: waist-to-hip ratio, VO_2peak, peak oxygen uptake.

^*Differences between time points within condition (pre-post). ^†Differences between training groups vs. control group. ^‡Differences between experimental groups. p<0.05.