The Claim
In adults over 60 years of age, an increase in resistance training frequency by one day per week is associated with a small increase in maximal strength effect size of 0.14 (95% CI: 0.08, 0.21), but there is no significant association between training frequency and muscle 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.
For people over 60, adding one extra day of weight training each week might help them get a little stronger, but it won’t make their muscles noticeably bigger.
See the scientific wording
In adults over 60 years of age, increasing resistance training frequency by one day per week is associated with a small increase in maximal strength effect size of 0.14 (95% CI: 0.08, 0.21), but no significant association is observed between training frequency and muscle hypertrophy.
Doing resistance training one extra day a week makes the nervous system better at activating more muscle fibers during effort, which makes the person stronger, but it doesn't cause the muscle fibers to grow larger.
What the research says
1 studyFor people over 60, doing weight training one extra day a week helps them get a little stronger, but doesn’t make their muscles noticeably bigger — and this study proves it with solid data.
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.