Table 4 Subgroup analyses regarding effects of heavy resistance training on running economy
Moderator variables | Hedges’ g [95% CIs LL, UL] | Interpretation |
|---|---|---|
Performance level | ||
Lv. 1 (Recreational level) |  − 0.27[ − 0.59, 0.04] | Small |
Lv. 2 (Moderate level) |  − 0.18 [ − 0.92, 0.56] | Trivial |
Lv. 3 (High level) |  − 0.61 [ − 1.84, 0.63] | Moderate |
Age | ||
Young (21.0–31.5 years) |  − 0.51 [ − 0.83, 0.19] | Moderate |
Old (34.1–44.8 years) |  − 0.12 [ − 0.41, 0.17] | Trivial |
Training intensity | ||
 < 90% 1RM or > 4RM |  − 0.17 [ − 1.05, 0.70] | Trivial |
 ≥ 90% 1RM or ≤ 4 RM |  − 0.31 [ − 0.61,  − 0.02] | Small |
Training modality | ||
Dynamic training |  − 0.32 [ − 0.64, 0.00] | Small |
Isometric training |  − 0.33 [ − 0.89, 0.22] | Small |
Intervention period | ||
Short (6–8 weeks) |  − 0.21 [ − 0.56, 0.15] | Small |
Long (10–14 weeks) |  − 0.45 [ − 0.83,  − 0.08] | Small |