Table 3.

Changes in outcome between the intervention group doing high-intensity interval training and the control group and changes within the groups from baseline to 9 months of follow-up

N=61	Baseline mean both groups	9 months change from baseline		Mean difference between groups 9 months
		Control	Intervention
Cardiorespiratory fitness
VO2max (mL/kg/min)  95% CI  P values	29.51 27.97 to 31.05	0.21 −0.81 to 1.22 0.69	3.29 2.23 to 4.34 <0.001	3.08 1.63 to 4.53 <0.001
HR (beats/min)  95% CI  P values	65.8 63.3 to 68.3	-0.4 -3.4 to 2.7 0.82	1.9 −1.2 to 4.9 0.24	2.2 −1.9 to 6.3 0.29
Body compositIon
Truncal fat%  95% CI  P values	42.53 40.43 to 44.63	-0.17 -1.03 to 0.70 0.71	-1.08 -1.96 to −0.21 0.02	-0.92 -2.14 to 0.31 0.14
Total fat%  95% CI  P values	39.48 37.91 to 41.05	-0.29 -0.93 to 0.35 0.37	-0.80 -1.44 to −0.16 0.02	-0.50 -1.41 to 0.40 0.27
BMI (kg/m2)  95% CI  P values	28.10 27.07 to 29.14	0.07 −0.27 to 0.41 0.67	-0.32 -0.66 to 0.02 0.07	-0.39 -0.87 to 0.09 0.11
Lean muscle mass (g)  95% CI  P values	48 460 47 074 to 49 847	-71 -669 to 527 0.82	-524 -1125 to 76 0.09	-453 -1297 to 390 0.29

Adjusted for age and sex.

BMI, Body Mass Index; HR, resting heart rate; VO_2max, maximal oxygen uptake.