The Claim
Multi-joint resistance training performed twice weekly for 10 weeks induces approximately 6.1% muscle hypertrophy in the elbow flexors of untrained young men.
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 men who haven't trained before do arm exercises twice a week for about 2 months, their biceps and related muscles grow by about 6% on average.
See the scientific wording
Untrained young men experience significant muscle hypertrophy of approximately 6.1% in elbow flexors after 10 weeks of multi-joint resistance training performed twice weekly
What the research says
1 studyStudy: Single vs. Multi-Joint Resistance Exercises: Effects on Muscle Strength and Hypertrophy
The study tested the exact same training program (multi-joint exercises, twice weekly for 10 weeks) on the exact same muscles (elbow flexors) in the exact same people (untrained young men) and found exactly the 6.1% muscle growth that the claim describes.
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.