The Claim
In older women, 8 weeks of resistance training does not significantly alter skeletal muscle mass, despite concurrent improvements in strength and walking speed, suggesting that skeletal muscle mass may not be the primary driver of functional gains during short-term resistance training.
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.
When older women lift weights for 8 weeks, their muscles don’t get much bigger, but they do get stronger and walk faster—so it seems like something other than bigger muscles is helping them move better.
See the scientific wording
In older women, resistance training does not significantly alter skeletal muscle mass over 8 weeks, despite improvements in strength and walking speed, indicating that muscle mass may not be the primary driver of functional gains in short-term training.
What the research says
1 studyAfter 8 weeks of strength training, older women got better at walking faster, but that improvement wasn’t because their muscles got much bigger — it was because their muscles got stronger and worked more efficiently.
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.