The Claim
In resistance-trained young men, a varied loading protocol (2–4, 8–12, and 20–30 RM) results in a larger effect size for maximal bench press strength compared to a constant 8–12 RM protocol, though this difference is not statistically significant.
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.
Among young men who regularly lift weights, using a training routine that changes the number of repetitions across different sets leads to a slightly greater increase in maximum bench press strength than using the same repetition range throughout, but the difference is too small to be certain it is real.
See the scientific wording
In resistance-trained young men, a varied loading protocol (2–4, 8–12, and 20–30 RM) may lead to a larger effect size for maximal bench press strength compared to a constant 8–12 RM protocol, though this difference is not statistically significant.
When muscles are trained with different weights, the nervous system learns to activate more muscle fibers with greater coordination, allowing the body to produce more force during a maximum effort.
What the research says
1 studyStudy: Effects of Varied Versus Constant Loading Zones on Muscular Adaptations in Trained Men
Men who switched between heavy, medium, and light weights saw slightly bigger strength gains in bench press than those who always used medium weights, but the difference wasn’t big enough to say for sure it wasn’t just luck. Still, the numbers point toward switching weights being a little better.
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.