The Claim
In resistance-trained men, the biceps femoris muscle demonstrates significantly greater electromyographic activation during the single-joint kickback exercise compared to the multi-joint leg press, with a 76.0% higher activation (effect size = 2.27, p < 0.001), suggesting that isolated hip extension may be more effective for targeting this hamstring muscle.
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 a guy who lifts weights, doing kickbacks might work your back thigh muscle way more than the leg press — like 76% more, according to one study.
See the scientific wording
In resistance-trained men, the biceps femoris muscle exhibits substantially higher electromyographic activation during the single-joint kickback exercise (76.0% higher, effect size = 2.27, p < 0.001) compared to the multi-joint leg press, indicating that hip extension in isolation may be more effective for targeting this hamstring muscle.
What the research says
1 studyThe study found that the kickback exercise activates the biceps femoris muscle in the hamstring much more than the leg press, which matches 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.