Table 6.
Subgroup analysis of total cholesterol based on random effect analysis
| Subgroup | Effect size (n) | WMD (95%CIs) | P-within | I2 (%) | Q-test |
|---|---|---|---|---|---|
| Overall | 13 | -11.029 (-20.716, -1.342) | 0.026 | 75.2 | < 0.001 |
| BMI | |||||
| Not detected | 1 | - | - | - | - |
| Normal | 3 | -28.929 (-51.346, -6.512) | 0.011 | 82.0 | 0.004 |
| Overweight | 7 | 0.768 (-7.330, 8.865) | 0.853 | 10.8 | 0.347 |
| Obese | 2 | -13.829 (-31.573, 3.915) | 0.127 | 13.0 | 0.284 |
| Study quality | |||||
| Medium | 7 | -10.069 (-15.361, -4.778) | < 0.001 | 0 | 0.851 |
| High | 6 | -10.920 (-34.218, 12.377) | 0.358 | 89.0 | < 0.001 |
| Exercise duration | |||||
| Short | 3 | -15.156 (-33.558, 3.246) | 0.106 | 59.5 | 0.084 |
| Medium | 3 | -0.053 (-17.385, 17.279) | 0.995 | 48.8 | 0.142 |
| Long | 7 | -13.050 (-26.423, 0.323) | 0.056 | 77.7 | < 0.001 |
| Exercise type | |||||
| AE | 10 | -10.438 (-23.481, 2.605) | 0.117 | 78.4 | < 0.001 |
| RE | 1 | 7.730 (-17.014, 32.474) | 0.540 | - | - |
| AE+RE | 2 | -34.790 (-57.121, -12.459) | 0.104 | 77.3 | 0.036 |
| Exercise frequency | |||||
| 1-2 times per week | 3 | -7.841 (18.089, 2.406) | 0.134 | 0 | 0.732 |
| 3-4 times per week | 10 | -12.133 (-24.723, 0.457) | 0.059 | 81.0 | < 0.001 |
| Exercise volume | |||||
| Low | 6 | -4.435 (-13.602, 4.733) | 0.343 | 0 | 0.761 |
| Moderate | 4 | -21.711 (-40.825, -2.598) | 0.026 | 74.4 | 0.008 |
| High | 3 | -9.296 (-28.526, 9.935) | 0.343 | 87.1 | < 0.001 |
AE: Aerobic exercise; RE: Resistance exercise; WMD: Weighted mean difference (mg/dl); LDL: Low-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