Table 2

Changes in outcome between the intervention group doing high-intensity interval training and the control group and changes within the groups from baseline to 3 months of follow-up

N=61Baseline mean both groups3 months change from baselineMean difference between groups 3 months
ControlIntervention
Cardiorespiratory
fitness
 VO2max (mL/kg/min)
 95% CI
 P values		29.51
27.97 to 31.05		0.25
−0.71 to 1.20
0.61		3.97
3.01 to 4.93
<0.001		3.72
2.38 to 5.06
<0.001
 HR (beats/min)
 95% CI
 P values		65.8
63.3 to 68.3		-1.0
-4.0 to 2.0
0.50		-4.5
-7.6 to −1.4
0.004		-3.5
-7.6 to 0.6
0.09
Body compositIon
 Truncal fat%
 95% CI
 P values		42.53
40.43 to 44.63		-0.11
-0.98 to 0.76
0.80		-1.39
-2.27 to −0.52
0.002		-1.28
-2.51 to −0.05
0.04
 Total fat%
 95% CI
 P values		39.48
37.91 to 41.05		-0.26
-0.90 to 0.39
0.44		-1.06
-1.70 to −0.42
0.001		-0.80
-1.71 to 0.10
0.08
 BMI (kg/m2)
 95% CI
 P values		28.10
27.07 to 29.14		-0.04
-0.38 to 0.29
0.78		-0.35
-0.69 to −0.01
0.05		-0.31
-0.78 to 0.17
0.21
 Lean muscle mass (g)
 95% CI
 P values		48 460
47 074 to 49 847		46
−552 to 644
0.88		114
−487 to 714
0.71		67
−776 to 911
0.88

  • Adjusted for age and sex.

  • BMI, Body Mass Index; HR, resting heart rate; VO2max, maximal oxygen uptake.