Outcomes | Sub-Group Comparison of Meta-Analysis | # of Individual Studies Included in Meta-Analysis | Number of Participants Included in Meta-Analysis | Weighted Mean Difference (WMD) | 95Â % Confidence Interval | P value of overall effect | I2 statistic (p value for heterogeneity) | Interpretation |
---|---|---|---|---|---|---|---|---|
Chest Press (1-RM) | Combined aerobic and PRE group compared with no exercise | 2 studies | 44 | 11.86 kg 1-RMb | 2.37, 21.36 | 0.01a | 46 % (p = 0.18) | Significant (and potential clinically important) improvement in change in chest press 1-repetition maximum among exercisers compared with non-exercisers. |
Knee Flexion (1-RM) | Combined aerobic and PRE group compared with no exercise | 3 studies | 81 | 10.46 kg 1-RMb | 1.64, 19.29 | 0.02a | 91 % (p < 0.00001) | Significant (and potential clinically important) improvement in change in knee flexion 1-repetition maximum among exercisers compared with non-exercisers |
Leg Press (1-RM) | Combined aerobic and PRE group compared with no exercise | 2 studies | 44 | 50.96 kg 1-RMb | −13.01, 114.92 | 0.12 | 88 % (p = 0.004) | Non-significant trend towards an increase in leg press 1-RM among exercisers compared with non-exercisers. |
Knee Extension (1-RM) | Combined aerobic and PRE group compared with no exercise | 3 studies | 81 | 20.58 kg 1-RMb | −4.69, 45.86 | 0.11 | 95 % (p < 0.00001) | Non-significant trend towards an increase in knee extension 1-RM among exercisers compared with non-exercisers. |
Upper Extremity Muscle Groups (1-RM) | Aerobic versus PRE | 2 studies | 41 | 14.56 kg 1-RM or 3-RMb | 10.63, 18.49 | <0.00001a | 32 % (p = 0.23) | Significantly (and potential clinically important) greater increase in strength among participants in the PRE group compared with the aerobic group. |
Lower Extremity Muscle Groups (1-RM) | Aerobic versus PRE | 2 studies | 41 | 23.09 kg 1-RM or 3-RMb | 13.01, 33.18 | <0.00001a | 75 % (p = 0.04) | Significantly (and potential clinically important) greater increase in strength among participants in the PRE group compared with the aerobic group. |