The Claim
In healthy adults over 65 years of age, light-intensity resistance training three to five times per week combined with daily whey protein supplementation increases dynamic knee extensor strength by approximately 13.7 Nm over one year compared to protein supplementation alone, but does not increase quadriceps muscle size.
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.
In adults over 65, doing light resistance training three to five times a week with daily whey protein increases knee strength by about 13.7 Nm after one year compared to taking whey protein alone, but does not increase the size of the quadriceps muscle.
See the scientific wording
In healthy adults over 65 years of age, light-intensity resistance training three to five times per week combined with daily whey protein supplementation increases dynamic knee extensor strength by approximately 13.7 Nm over one year compared to protein supplementation alone, but does not increase quadriceps muscle size.
Doing light leg exercises with protein shakes makes the nerves that control leg muscles fire more efficiently, so the muscles produce more force without getting bigger. The protein helps keep the connections between nerves and muscles working well.
What the research says
1 studyIn older adults, doing light weight exercises a few times a week with protein shakes made their leg strength a bit stronger, but their thigh muscles didn’t get bigger — 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.