The Claim
Tentative dose-response relationships exist between strength training variables—such as frequency, intensity, and volume—and increases in whole muscle cross-sectional area in humans, particularly in the quadriceps femoris and elbow flexors, although precise thresholds and optimal ranges are not well established due to limited comparative evidence.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Doing more strength training might help your muscles grow bigger, especially in your thighs and arms, but we're not exactly sure how much is best because there hasn't been enough research comparing different workout levels.
See the scientific wording
Tentative dose-response relationships exist between strength training variables (frequency, intensity, volume) and increases in whole muscle cross-sectional area in humans, particularly in the quadriceps femoris and elbow flexors, though precise thresholds and optimal ranges remain uncertain due to limited comparative evidence.
What the research says
1 studyThe study looked at how different strength training routines affect muscle size in the thighs and arms, and found that while more training can lead to bigger muscles, we still don’t know the exact best amounts—just like the claim says.
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.