The Claim
After three months of progressive resistance training, myofibrillar protein synthesis rates did not significantly increase in young or older adults, and the 27% deficit in myofibrillar protein synthesis rates between older and young adults persisted, indicating that progressive resistance training does not normalize age-related reductions in myofibrillar protein synthesis.
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.
Three months of progressive resistance training did not increase myofibrillar protein synthesis in young or older adults, and older adults still had a 27% lower rate of synthesis compared to young adults.
See the scientific wording
After three months of progressive resistance training, myofibrillar protein synthesis rates did not significantly increase in either young or older adults, and the 27% deficit in older adults persisted, suggesting that resistance training does not normalize age-related reductions in muscle protein synthesis.
As people age, the cellular signal that tells muscles to build new proteins becomes less responsive to exercise, so even after months of lifting weights, the muscles keep making protein at the same slow rate as before.
What the research says
1 studyEven after three months of strength training, older adults’ muscles still built protein 27% slower than young adults’ muscles, and neither group got faster at building muscle. This means lifting weights didn’t fix the natural slowdown in muscle repair that comes with aging.
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.