Whether you're new to lifting weights or have been doing it for years, when you eat your protein around your workout doesn't seem to make a big difference in how strong or muscular you get—but there just aren't many studies on people who already train regularly.
See the scientific wording
Resistance training status (trained versus untrained) does not significantly moderate the effect of protein timing on outcomes of strength or hypertrophy, although the evidence is limited by the small number of studies involving trained individuals (n=4).
Very strong evidence
Randomized trialsOne good-quality study supports this claim.
What the research says
1 study reviewedSupporting (1)
The effect of protein timing on muscle strength and hypertrophy: a meta-analysis
Systematic Review With Meta-AnalysisMeta-analysis2013
This study found that when you eat protein around your workout doesn’t really matter for building muscle or strength—what matters is just getting enough protein overall. This matches the claim that being trained or not doesn’t change how much protein timing helps.
Contradicting (0)
No contradicting studies found yet
That doesn't mean it's settled — it just means no study has tested the opposite.
Quality-weighted scoring: we follow the GRADE framework — each study is rated High, Moderate, Low, or Very Low based on study design, methodology rigor, and risk of bias. A single high-quality RCT can outweigh several weaker observational studies.
Scores reflect study quality, not just count.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting study
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Whether you're new to lifting weights or have been doing it for years, when you eat your protein around your workout doesn't seem to make a big difference in how strong or muscular you get—but there just aren't many studies on people who already train regularly.
Evidence from Studies
Supporting (1)
Community contributions welcome
The effect of protein timing on muscle strength and hypertrophy: a meta-analysis
This study found that when you eat protein around your workout doesn’t really matter for building muscle or strength—what matters is just getting enough protein overall. This matches the claim that being trained or not doesn’t change how much protein timing helps.
Contradicting (0)
Community contributions welcome
Score Breakdown
No multi-axis breakdown available yet. The overall Pro / Against score above is the best signal.
- No clinical evidence is available; the score reflects mechanistic plausibility only.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Systematic Review and Meta-Analysis of Protein Timing Effects on Strength and Hypertrophy Stratified by Resistance Training Status
Includes only RCTs with clear definitions of trained/untrained status, controlled protein timing protocols, and standardized strength/hypertrophy outcomes; pools data from all eligible studies to test for subgroup differences.
Double-Blind RCT Comparing Protein Timing Effects on Hypertrophy and Strength in Trained vs. Untrained Young Adults
Randomly assigns 50+ trained and 50+ untrained participants to pre- vs. post-workout protein intake; measures muscle mass and strength changes over 12+ weeks with blinded assessors.
Prospective Cohort Study of Protein Timing Patterns and Muscle Gains in Trained and Untrained Gym-Goers Over 6 Months
Follows 200+ individuals (100 trained, 100 untrained) over 6 months, recording daily protein intake timing and measuring body composition and strength changes monthly.
Case-Control Study Comparing Protein Timing Habits in Individuals with High vs. Low Hypertrophy Gains Among Trained Lifters
Identifies 30 trained individuals with high hypertrophy gains and 30 with low gains; retrospectively analyzes their protein timing patterns over the prior 12 months.
Cross-Sectional Survey of Protein Timing and Muscle Outcomes in Trained and Untrained Gym Users
Surveys 500+ gym users (250 trained, 250 untrained) on their protein intake timing and measures their current muscle mass and strength in a single session.