A systematic review including 24 studies with a total of 1128 subjects was abstracted in DARE. Compared with participants in the control groups, participants in the intervention groups reported: a significant increase in cardiovascular fitness (WMD 2.73 mL/kg, SD=0.35, p<0.001), a reduction in body weight (WMD -0.95 kg, SD=0.25, p<0.001), a reduction in body fat (WMD -0.63%, SD=0.35, p=0.035), a reduction in BMI (WMD -0.28 kg/m2, SD=0.13, p=0.015), and a reduction in diastolic blood-pressure (WMD -1.54 mmHg, SD=0.79, p=0.026). There was no evidence for a change in systolic blood-pressure between the control and intervention groups (WMD -1.54 mmHg, SD=2.23, p=0.316).
Comment: The quality of evidence is downgraded by limitations in review methodology and inconsistency.