The Claim
In untrained young men, a 10-week resistance training intervention is associated with a disproportionate increase in mitochondrial area relative to fiber size in both type I and type II muscle fibers, indicating that mitochondrial expansion occurs at a faster rate than overall fiber growth.
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 young guys who don't exercise start lifting weights for 10 weeks, the energy-producing parts inside their muscles grow faster than the muscles themselves.
See the scientific wording
Resistance training for 10 weeks in untrained young men is associated with a disproportionate increase in mitochondrial area relative to fiber size in both type I and type II muscle fibers, suggesting mitochondrial expansion outpaces overall fiber growth.
What the research says
1 studyThe study did the same 10-week weight training with untrained young men and found that mitochondria inside muscle cells grew more than the overall muscle size, just like the claim said.
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.