The Claim
In resistance-trained females, the gluteus maximus-to-hamstring co-activation ratio during the descending phase of the barbell back squat is closest to 1.0 when performing the movement at 40% of one-repetition maximum, suggesting balanced neuromuscular activation between the gluteus maximus and hamstring muscles at this submaximal load.
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 women who lift weights do squats with a light weight (about 40% of their max), their butt and hamstring muscles work together in perfect balance as they lower down.
See the scientific wording
In resistance-trained females, gluteus maximus-to-hamstring co-activation ratio during the descending phase of the barbell back squat is closest to 1.0 at 40% of one-repetition maximum, indicating balanced activation between glutes and hamstrings at this low load.
What the research says
1 studyStudy: Effect of external load on muscle activation during the barbell back squat
The study found that when women squat with a light weight (40% of their max), their glutes and hamstrings work equally hard going down, which is exactly what the claim says.
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.