The Claim
Resistance-trained men exhibit higher perceived exertion during unilateral leg extensions with a slow eccentric tempo (1-0-3) compared to a fast eccentric tempo (1-0-1) when training volume and intensity are held constant, indicating that slower eccentric tempos increase subjective fatigue without enhancing hypertrophy or strength.
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.
In resistance-trained men, performing leg extensions with a slow lowering phase increases the feeling of effort compared to a fast lowering phase, even when the total work and weight lifted are the same, and this does not lead to greater muscle growth or strength gains.
See the scientific wording
Resistance-trained men report higher perceived exertion during unilateral leg extensions with a slow eccentric tempo (1-0-3) compared to a fast tempo (1-0-1), despite identical training volume and intensity, suggesting slower tempos may increase subjective fatigue without enhancing hypertrophy or strength.
When muscles are stretched slowly under load, chemicals build up faster inside the muscle fibers and nerves in the muscle send stronger signals to the brain, making the person feel more tired even though the work done is the same.
What the research says
1 studyWhen guys lift weights slowly on leg extensions, they feel more tired than when they do it fast—even if they do the same amount of work. This study proved it: slow lifts felt harder, but didn’t make muscles bigger or stronger.
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.