The Claim
In resistance-trained individuals, performing biceps curls with variable glenohumeral joint angles does not result in a reduction of acute volume load, as there is no significant difference in total work (sets × reps × load) between variable-angle (596 kg ± 170 kg) and fixed-angle (606 kg ± 175 kg) protocols, indicating that altering joint angles during exercise does not compromise mechanical workload.
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're used to lifting weights, changing the angle of your shoulder during bicep curls doesn't make your workout easier or harder — you still do about the same amount of work as with a fixed angle.
See the scientific wording
Performing biceps curls with varying glenohumeral joint angles does not reduce acute volume load in resistance-trained individuals, with no significant difference in total work (sets × reps × load) between variable-angle (596 kg ± 170 kg) and fixed-angle (606 kg ± 175 kg) protocols, indicating that joint angle variation can be incorporated without compromising mechanical workload.
What the research says
1 studyThe study tested whether changing shoulder angles during bicep curls affects how much work people do, and found no difference in total workload compared to keeping the shoulder still — which supports the claim.
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.