The Claim
Protein supplementation during 24 weeks of resistance training does not increase satellite cell content or myonuclear number in type I or type II muscle fibers of frail elderly individuals, despite significant muscle fiber hypertrophy.
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 frail elderly individuals, taking protein supplements while doing resistance training for 24 weeks does not increase the number of satellite cells or myonuclei in muscle fibers, even though the muscle fibers grow larger.
See the scientific wording
Protein supplementation during 24 weeks of resistance training does not increase satellite cell content or myonuclear number in type I or type II muscle fibers of frail elderly individuals, despite significant muscle fiber hypertrophy, suggesting that muscle growth in this population occurs without recruitment of new myonuclei from satellite cells.
When older adults take extra protein and do strength training, their muscle fibers get bigger by making the existing nuclei in each fiber work harder to produce more muscle proteins, without adding any new nuclei from satellite cells.
What the research says
1 studyEven though older adults’ muscles got bigger from protein and strength training, the study found no new muscle nuclei or satellite cells were added — meaning the muscles grew by making existing cells work harder, not by adding more cells.
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.