The Claim
Muscle hypertrophy, as measured by ultrasound thickness, increases by approximately 6% following both high-load (80% 1RM) and low-load (30% 1RM) resistance training to failure in untrained young men when volume is matched, which challenges traditional load-based hypertrophy recommendations.
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 untrained young men lift weights until they can't anymore, both heavy and light weights make their muscles grow about the same amount (6% bigger) if they do the same total work. This goes against the common belief that heavier weights are always better for muscle growth.
See the scientific wording
Muscle hypertrophy measured by ultrasound thickness increases similarly (~6%) following both high-load (80% 1RM) and low-load (30% 1RM) resistance training to failure in untrained young men when volume is matched, challenging traditional load-based hypertrophy recommendations.
What the research says
1 studyStudy: Greater Neural Adaptations following High- vs. Low-Load Resistance Training
The study found that both heavy and light weight training made muscles grow the same amount when people lifted until they couldn't anymore, 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.