The Claim
Six weeks of high-volume resistance training increases integrated non-myofibrillar protein synthesis rates by approximately 69% (d=0.693) compared to high-load resistance training in trained young men, suggesting a preferential stimulation of non-contractile protein production.
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.
If you do lots of reps with lighter weights for six weeks, your body might make more of the non-muscle proteins inside your muscles than if you lift heavy weights with fewer reps — and this difference is pretty big.
See the scientific wording
Six weeks of high-volume resistance training increases integrated non-myofibrillar protein synthesis rates by approximately 69% (d=0.693) compared to high-load training in trained young men, suggesting a preferential stimulation of non-contractile protein production.
When muscles are worked with many repetitions using lighter weights, the cells inside the muscle fill with calcium and turn on specific signaling pathways that tell the cell to make more proteins that support energy production and cell function, not muscle contraction. Over six weeks, this leads to a large increase in these non-contractile proteins.
What the research says
1 studyIf you lift lighter weights for more reps over six weeks, your muscles make more of the non-muscle parts inside them than if you lift heavy weights with fewer reps. This study found exactly that in trained guys.
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.