The Claim
In young women undergoing resistance training twice weekly for 8 weeks, performing incline biceps curls leads to greater increases in proximal elbow flexor muscle thickness compared to preacher biceps curls, with a mean difference of 0.08 cm (95% CI: 0.02, 0.13 cm), indicating that regional muscle hypertrophy may vary depending on exercise type.
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 young women do incline bicep curls twice a week for 8 weeks, their upper arm muscles grow more than if they did preacher curls — the type of curl really affects where the muscle grows.
See the scientific wording
In young women performing resistance training twice weekly for 8 weeks, incline biceps curls are associated with greater increases in proximal elbow flexor muscle thickness compared to preacher biceps curls, with a mean difference of 0.08 cm (95% CI: 0.02, 0.13 cm), suggesting regional muscle growth varies by exercise type.
What the research says
1 studyStudy: Distinct muscle growth and strength adaptations after preacher and incline biceps curls
The study found exactly what the claim says: doing incline bicep curls led to more growth near the top of the biceps compared to preacher curls, and the numbers match.
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.