The Claim
In older overweight and obese adults, the addition of moderate caloric restriction to resistance training does not significantly enhance improvements in single muscle fiber contractility or knee extensor quality compared to resistance training alone.
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 older adults who are overweight or obese, adding moderate calorie reduction to strength training does not lead to greater improvements in muscle fiber strength or knee muscle function than strength training by itself.
See the scientific wording
Adding moderate caloric restriction to resistance training in older overweight and obese adults does not significantly enhance improvements in single muscle fiber contractility or knee extensor quality beyond resistance training alone, suggesting caloric restriction does not augment muscle fiber adaptations in this population.
Lifting weights makes muscle fibers produce more force per unit of size by changing how they respond to calcium signals, and also improves how well the nervous system activates those fibers. This happens without needing to lose fat or change fiber size.
What the research says
1 studyFor older adults who are overweight, doing strength training alone makes their muscle fibers just as strong as doing strength training plus dieting. The diet didn’t help them get stronger muscles beyond what lifting weights already did.
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.