The Claim
When total training volume is equated, powerlifting-style resistance training (3RM sets with 3-minute rest) and bodybuilding-style training (10RM sets with 90-second rest) produce similar increases in muscle thickness of the biceps brachii in well-trained young men over 8 weeks, with both groups showing approximately 12.6-12.7% hypertrophy.
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.
Two different weightlifting styles—one focused on heavy weights with long breaks, the other on lighter weights with short breaks—both grew arm muscles about the same amount when people lifted the same total amount over 8 weeks.
See the scientific wording
When total training volume is equated, powerlifting-style resistance training (3RM sets with 3-minute rest) and bodybuilding-style training (10RM sets with 90-second rest) produce similar increases in muscle thickness of the biceps brachii in well-trained young men over 8 weeks, with both groups showing approximately 12.6-12.7% hypertrophy, indicating that hypertrophy outcomes are comparable despite differences in loading strategies and rest intervals.
What the research says
1 studyThe study compared two workout styles with equal total effort and found both built similar muscle size in the biceps, just like the claim said.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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