The Claim
In resistance-trained young men, 8 weeks of volume-equated high-repetition and low-repetition daily undulating periodization programs result in similar increases in muscle thickness of the chest, distal lateral quadriceps, and anterior quadriceps.
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 young men who regularly lift weights, two different training programs—one using high repetitions and one using low repetitions—produce the same amount of muscle growth in the chest and thighs when the total workload is kept equal.
See the scientific wording
In resistance-trained young men, 8 weeks of volume-equated high-repetition and low-repetition daily undulating periodization programs produce similar increases in muscle thickness of the chest, distal lateral quadriceps, and anterior quadriceps, indicating that hypertrophy adaptations may not depend on repetition range when volume is controlled.
When muscles are worked with heavy or light weights as long as the total effort is the same, the force on muscle fibers and the buildup of metabolic byproducts turn on a molecular switch that tells the muscle to build more protein, making the fibers thicker.
What the research says
1 studyWhen people lift weights with either heavy loads and few reps or lighter loads and more reps—but do the same total amount of work—both ways make their chest and thigh muscles grow just as much after 8 weeks.
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.