Training more often helps you get stronger, but doesn’t seem to help you get bigger muscles—so frequency matters more for strength than for size.
Scientific Claim
The dose-response relationship between resistance training frequency and strength differs from that with hypertrophy, as only strength shows a consistently identifiable positive association.
Original Statement
“The dose-response relationship between frequency and hypertrophy appears to differ from that with strength, as only the latter exhibits consistently identifiable effects.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The language 'appears to differ' and 'exhibits consistently identifiable effects' accurately reflects the probabilistic nature of the findings without implying causation.
Evidence from Studies
Supporting (1)
The Resistance Training Dose Response: Meta-Regressions Exploring the Effects of Weekly Volume and Frequency on Muscle Hypertrophy and Strength Gains.
More frequent workouts help you get stronger consistently, but they don’t always help you grow bigger muscles — the study proves this difference with solid data.