Table 2.
Sub analysis of the effect of POL vs. THR, POL vs. PYR, POL vs. HIIT, POL vs. CG
| Intervention groups | VO2max/peak | TT | TTE | V/P at VT2/LT2 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | SMD (95% CI) | I2 | Z (p) | N | SMD (95% CI) | I2 | Z (p) | N | SMD (95% CI) | I2 | Z (p) | N | SMD (95% CI) | I2 | Z (p) | |
| POL vs. THR | 78 | 0.24 (– 0.46; 0.94) | 53% | 0.67 (0.51) | 114 | 0.01 (– 0.36; 0.38) | 0% | 0.07 (0.94) | 42 | 0.43 (– 0.18; 1.05) | 0% | 1.38 (0.17) | 132 | 0.15 (– 0.19; 0.50) | 0% | 0.88 (0.38) |
| POL vs. PYR | 70 | 0.08 (– 0.39; 0.55) | 0% | 0.34 (0.73) | 44 | – 0.07 (– 0.66; 0.52) | 0% | – 0.23 (0.82) | – | – | – | – | 83 | – 0.14 (– 0.57; 0.30) | 0% | – 0.61 (0.54) |
| POL vs. HIIT | 43 | 0.34 (– 0.27; 0.95) | 0% | 1.10 (0.27) | – | – | – | – | – | – | – | – | – | – | – | – |
| POL vs. CG | 93 | 0.34 (– 0.07; 0.76) | 0% | 1.63 (0.10) | 42 | – 0.01 (– 0.62; 0.60) | 0% | – 0.04 (0.97) | – | – | – | – | 38 | 0.03 (– 0.61; 0.66) | 0% | 0.08 (0.94) |
CG control group, HIIT high-intensity interval training, POL polarized training, PYR pyramidal Training, THR threshold training, TT time trial, TTE time to exhaustion, V/P at VT2/LT2 velocity or power at second ventilatory or lactate threshold, VO2max/peak maximal/peak oxygen uptake, SMD standardized mean difference, I2 (p) heterogeneity and p-value, Z (p) test for overall effect and p-value