Table 4.
Subgroup analysis of high-density lipoprotein based on random effect analysis
| Subgroup | Effect size (n) | WMD (95%CIs) | P-within | I2 (%) | Q-test |
|---|---|---|---|---|---|
| Overall | 14 | 1.297 (-1.620, 4.214) | 0.383 | 72.6 | < 0.001 |
| BMI | |||||
| Not detected | 1 | - | - | - | - |
| Normal | 3 | 1.759 (-5.270, 8.789) | 0.624 | 60.1 | 0.081 |
| Overweight | 8 | 0.677 (-2.325, 3.680) | 0.658 | 42.4 | 0.096 |
| Obese | 2 | -2.279 (-18.068, 13.510) | 0.777 | 91.8 | < 0.001 |
| Study quality | |||||
| Medium | 7 | 0.856 (-3.253, 4.964) | 0.683 | 80.1 | < 0.001 |
| High | 7 | 1.507 (-2.210, 5.223) | 0.427 | 44.7 | 0.093 |
| Exercise duration | |||||
| Short | 4 | 3.011 (0.331, 5.692) | 0.028 | 0 | 0.882 |
| Medium | 3 | -6.080 (-9.640, -2.520) | 0.001 | 0 | 0.450 |
| Long | 7 | 4.259 (1.284, 7.235) | 0.005 | 46.6 | 0.085 |
| Exercise type | |||||
| AE | 11 | 0.127 (-3.107, 3.360) | 0.939 | 65.4 | 0.001 |
| RE | 1 | 3.870 (-4.301, 12.041) | 0.353 | - | - |
| AE+RE | 2 | 6.804 (4.696, 8.911) | < 0.001 | 0 | 0.355 |
| Exercise frequency | |||||
| 1-2 times per week | 3 | 0.990 (-3.730, 5.709) | 0.681 | 54.2 | 0.113 |
| 3-4 times per week | 11 | 1.411 (-2.262, 5.083) | 0.452 | 76.2 | < 0.001 |
| Exercise volume | |||||
| Low | 6 | -1.561 (-6.203, 3.080) | 0.510 | 55.4 | 0.047 |
| Moderate | 5 | 4.190 (1.811, 6.569) | 0.001 | 0 | 0.726 |
| High | 3 | 1.906 (-6.591, 10.403) | 0.660 | 91.5 | < 0.001 |
AE: Aerobic exercise; RE: Resistance exercise; WMD: Weighted mean difference (mg/dl); HDL: High-density lipoprotein cholesterol; BMI: Body mass index
I2: Percent variation in WMD attributable to heterogeneity/ Q-test: Test for heterogeneity with significance of < 0.10/ P-Within: Test of WMD of sub-groups by random-effect model with significance of < 0.05