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; VO2max, maximal oxygen uptake.