The Claim
Among healthy adult males, age between 18 and 40 years is not associated with variation in muscle mass gain resulting from resistance training, indicating that anabolic responsiveness to resistance training remains stable across this age range.
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.
If you're a healthy man between 18 and 40 years old, doing strength training will help you build muscle at about the same rate no matter your exact age in that range.
See the scientific wording
Age between 18 and 40 years is not associated with variation in muscle mass gain from resistance training in healthy adult males, suggesting that within this age range, anabolic responsiveness to resistance training remains stable.
What the research says
1 studyThis big study looked at lots of men who lifted weights and found that whether they were 18 or 40, they all gained about the same amount of muscle — so age doesn’t matter much in this range.
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.