Table 2.
Meta-regression analyses performed on each variable (univariate) and adjusted for all variables (multivariate)
| Univariate meta-regression on ACLCdiff | Groups included in analysis | Mean coefficient (95% CI) | p-value |
|---|---|---|---|
| Aerobic capacity | 27 | 4.1 (95% CI: 1.5 to 6.6) | p = 0.003 |
| Gender distribution (% male) | 33 | −1.25 (95% CI: −7.4 to 4.9) | p = 0.684 |
| Mean age | 29 | −2.1 (95% CI: −0.3 to −0.1) | p<0.001 |
| Mean difference in peak RER values | 24 | −12.1 (95% CI: −68.8 to 44.6) | p = 0.663 |
| Risk of bias (SumQAT score) | 34 | −0.19 (95% CI: −2.6 to 2.2) | p = 0.875 |
| Multivariate meta-regression on ACLCdiff | |||
|---|---|---|---|
| Aerobic capacity | 16 | 4.0 (95% CI: 0.81 to 7.2) | p = 0.019 |
| Gender distribution (% male) | 16 | 4.5 (95% CI: −4.1 to 13.2) | p = 0.268 |
| Mean age (years) | 16 | −0.25 (95% CI: −0.4 to −0.06) | p = 0.014 |
| Mean difference in peak RER values | 16 | 7.9 (95% CI: −59.0 to 74.8) | p = 0.797 |
| Risk of bias (SumQAT score) | 16 | 0.9 (95% CI: −3.8 to 5.6) | p = 0.682 |
ACLCdiff: difference between obtained AC VO2max and obtained LC VO2max, 95% CI: 95% confidence intervals, RER: respiratory exchange ratio, SumQAT: sum of quality assessment tool score