The Claim
Free-weight and machine-based strength training produce similar increases in maximal dynamic strength when measured using neutral tests (e.g., isometric or untrained modalities), with no significant difference in effect size (SMD: 0.084, p=0.387), indicating that overall strength gains are not superior with one modality over the other when testing outside the trained movement pattern.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Lifting free weights and using weight machines both make you just as strong when you test your strength in new or different ways — neither one is better than the other.
See the scientific wording
Free-weight and machine-based strength training produce similar increases in maximal dynamic strength when measured using neutral tests (e.g., isometric or untrained modalities), with no significant difference in effect size (SMD: 0.084, p=0.387), suggesting that overall strength gains are not superior with one modality over the other when testing outside the trained movement pattern.
What the research says
1 studyThis study found that lifting free weights and using machines both make you just as strong overall, especially when testing strength in ways not directly practiced during training — so neither is better than the other for building general strength.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.