These results only apply to young men — we don’t know if they work the same way for women, older people, or those with health conditions.
Scientific Claim
The findings of this meta-regression are limited to young, mostly male adults (mean age 25.16 ± 5.22 years, 79.1% male), and cannot be generalized to women, older adults, or clinical populations without additional evidence.
Original Statement
“utilizing 67 total studies of 2058 participants (79.1% male, 20.9% female; average age 25.16 ± 5.22 years)”
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 claim accurately reflects the demographic limitations reported in the study and avoids overgeneralization. No causal language is used, and the statement is factual and supported.
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
This study only looked at young men, so its results about weight training might not apply to women, older people, or those with health conditions — and the researchers themselves say so.