The Claim
In previously untrained young men, increases in normalized quadriceps surface electromyography amplitude during maximal voluntary contractions are moderately associated with gains in isometric knee extension strength (r = 0.58) and one-repetition maximum knee extension strength (r = 0.56) following 15 weeks of resistance training.
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 guys who’ve never lifted weights before start training, the more their thigh muscles ‘fire up’ during max efforts, the stronger they tend to get—both in holding a heavy position and in lifting one heavy weight.
See the scientific wording
In previously untrained young men, changes in normalized quadriceps surface electromyography amplitude during maximal contractions are moderately associated with increases in isometric knee extension strength (r = 0.58) and one-repetition maximum strength (r = 0.56) after 15 weeks of resistance training.
When someone starts lifting weights, their brain sends stronger signals to their thigh muscles, causing more muscle fibers to turn on at the same time. At the same time, the muscle fibers themselves get bigger, so they can generate more force. Together, these two changes make the person stronger when they push as hard as they can.
What the research says
1 studyWhen guys who’ve never lifted before start training, their thigh muscles get better at turning on during hard efforts—and this helps them get stronger. The study found this connection is real and moderate, just like 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.