Table 3. Multiple regression models for hypertrophic (whole muscle volume) and strength (1RM) adaptive responses to resistance exercise, for both males and females.
Model: predictor(s) | β | t | P | F | Adjusted R2 | VIF | |
---|---|---|---|---|---|---|---|
Post-intervention muscle volume | |||||||
Males | Baseline muscle volume | 0.91 | 32.30 | < 0.01 | 507.04 | 0.89 | 1.8 |
Baseline SAT | −0.02 | −0.80 | 0.42 | — | — | 1.5 | |
Age | 0.03 | 1.40 | 0.18 | — | — | 1.0 | |
Baseline body mass | 0.07 | 2.50 | 0.02 | — | — | 1.9 | |
Females | Baseline muscle volume | 0.97 | 58.40 | < 0.01 | 1370.40 | 0.94 | 1.6 |
Baseline SAT | 0.01 | 0.33 | 0.75 | — | — | 2.3 | |
Age | −0.01 | −0.92 | 0.36 | — | — | 1.0 | |
Baseline body mass | −0.02 | −0.92 | 0.36 | — | — | 2.0 | |
Post-intervention muscular strength (1RM) | |||||||
Males | Baseline strength (1RM) | 0.64 | 12.50 | < 0.01 | 71.50 | 0.59 | 1.6 |
Baseline muscle volume | 0.18 | 3.14 | < 0.01 | — | — | 2.0 | |
Baseline SAT | −0.13 | −2.30 | 0.03 | — | — | 1.9 | |
Age | −0.14 | −3.30 | < 0.01 | — | — | 1.0 | |
Baseline body mass | 0.09 | 1.50 | 0.14 | — | — | 2.1 | |
Females | Baseline strength (1RM) | 0.61 | 13.90 | < 0.01 | 61.50 | 0.46 | 1.3 |
Baseline muscle volume | 0.01 | 0.26 | 0.79 | — | — | 1.7 | |
Baseline SAT | −0.04 | −0.56 | 0.57 | — | — | 2.6 | |
Age | −0.14 | −3.70 | < 0.01 | — | — | 1.0 | |
Baseline body mass | 0.13 | 2.10 | 0.04 | — | — | 2.4 |
Abbreviations: 1RM, one repetition maximum; SAT, subcutaneous adipose tissue; VIF, variance inflation factor.