Low-volume high-intensity interval training improves cardiometabolic health, work ability and well-being in severely obese individuals: a randomized-controlled trial sub-study

Table 2 Anthropometric and body composition data before and after the intervention

Variable	HIIT group (n = 30)		Control group (n = 19)		ANOVA P-value
Variable	Baseline	Post	Baseline	Post	Time	Group	Group × time
Body weight (kg)	121.9 ± 28.9	116.6 ± 28.1^***	109.4 ± 18.3	105.7 ± 19.7^***	< 0.001	0.147	0.501
Body mass index (kg/m²)	39.9 ± 7.5	38.1 ± 7.3^***	37.5 ± 5.9	36.2 ± 6.2^***	< 0.001	0.298	0.298
Fat mass (kg)	53.6 ± 17.3	48.9 ± 16.5^***	48.4 ± 12.4	45.7 ± 14.1^**	< 0.001	0.360	0.142
Fat mass (%)	43.7 ± 7.7	41.7 ± 8.0^***	44.3 ± 8.7	42.9 ± 9.3^**	< 0.001	0.807	0.424
Fat free mass (kg)	68.3 ± 16.9	67.7 ± 17.1	60.9 ± 13.7	60.1 ± 13.9	0.005	0.110	0.509
Body water (L)	50.9 ± 12.3	50.4 ± 12.5^*	45.7 ± 10.0	44.9 ± 9.5^*	0.001	0.116	0.496
Waist circumference (cm)	120.5 ± 18.9	113.0 ± 18.0^***	110.7 ± 11.1	109.2 ± 11.8	< 0.001	0.154	0.001

HIIT High-intensity interval training group, CON control group
* P < 0.05, ** P < 0.01, *** P < 0.001 significant within-group difference between baseline and post-intervention

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