Middle-aged men doing strength training don't change their protein intake whether they take collagen, whey, or a placebo.
Scientific Claim
Daily protein intake remains stable during 12 weeks of resistance training in middle-aged untrained men, regardless of supplementation with BODYBALANCE® collagen peptides, whey protein, or placebo.
Original Statement
“the absolute and relative protein intake did not change during the observation period in any of the groups, and none of the participants were protein deficient.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
This is a descriptive finding about dietary habits, and the study's data supports the claim of stable protein intake across groups.
Evidence from Studies
Supporting (1)
The Influence of Specific Bioactive Collagen Peptides on Body Composition and Muscle Strength in Middle-Aged, Untrained Men: A Randomized Controlled Trial