The Claim
The overall electromyography (EMG) to force relationship of the quadriceps femoris muscle group is comparable during isometric single-joint knee extension and multi-joint leg press exercises performed at a 90-degree knee angle in healthy men, indicating similar neuromuscular activation patterns despite differing joint involvement.
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 men push with their legs using different exercises but at the same knee angle, their thigh muscles turn on in a similar way, even though one exercise uses more joints than the other.
See the scientific wording
The overall EMG/force relationship of the quadriceps femoris muscle group is similar between single-joint knee extension and multi-joint leg press exercises performed isometrically at a 90-degree knee angle in healthy men, suggesting comparable neuromuscular activation strategies despite differences in joint involvement.
What the research says
1 studyStudy: Quadriceps EMG/force relationship in knee extension and leg press.
The study found that the leg muscles work just as similarly during a simple knee movement as they do during a more complex leg press, when measured at the same knee angle — which supports the idea that the body uses similar muscle activation patterns in both exercises.
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.