The researchers made sure their results weren’t just because people trained longer or were already stronger — they accounted for those factors when looking at how volume and frequency affect muscle and strength.
Scientific Claim
The meta-regression models in this study were adjusted for intervention duration and training status, suggesting that the observed associations between volume/frequency and outcomes are independent of these potential confounders.
Original Statement
“All models were adjusted for the duration of the intervention and training status.”
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 describes a methodological control used in the analysis. No causal language is implied, and the statement is directly supported by the methods section.
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
The researchers made sure their results weren’t just because people trained longer or were already stronger, and even after accounting for that, more training still led to more muscle and strength gains.