The Claim
Matching resistance profiles across varying shoulder extension angles during cable curls enables valid comparison of muscle hypertrophy outcomes by isolating the effect of muscle length while controlling for torque distribution throughout the range of motion.
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 keep the resistance the same at different arm angles during cable curls, you can better compare how muscle stretch affects growth, without other forces messing up the results.
See the scientific wording
Matching resistance profiles across different shoulder extension angles in cable curls allows for valid comparison of muscle hypertrophy outcomes by isolating the effect of muscle length while controlling for torque distribution throughout the range of motion.
When the resistance stays the same no matter how far you stretch your arm, the muscle feels the same amount of pull throughout the movement, so stretching it more doesn’t change how hard it has to work — this lets you see if just stretching it more makes it grow.
What the research says
1 studyStudy: The effects of shoulder extension angle on elbow flexor hypertrophy in the cable curl exercise
When people did cable curls with their arms in different positions but kept the resistance the same, their biceps grew just as much either way. So yes, keeping the resistance steady lets you see if stretching the muscle more helps it grow, without other factors messing up the results.
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.