The Study
Post-exercise Ingestion of Carbohydrate, Protein and Water: A Systematic Review and Meta-analysis for Effects on Subsequent Athletic Performance
This study looks at lots of other experiments to see what happens when athletes drink carbs, protein, or just water after exercise. It can tell us what usually happens, but not for sure why — like noticing a pattern without knowing if one thing actually causes the other.
Analysis score
Maximum 85 for a systematic review with meta-analysis.
Where the score came from
This study looked at whether drinking carbs or carbs plus protein after exercise helps athletes perform better in a second workout soon after.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 546 / 100
Quality score
Systematic reviews and meta-analyses of cohort studies. They sit above a single cohort study but below a single randomized trial, because the underlying evidence is still observational.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, getting carbs after exercise helps, especially if you haven’t eaten recently.
- 2But adding protein doesn’t make a noticeable difference.
- 3Carbs with water boosted performance by 4% compared to water alone.
- 4Adding protein didn’t help much—only a 0.5% change, which isn’t meaningful.
- 5Eating before exercise made the carb benefit smaller.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Related Content
Claims (4)
Drinking a carb mix with water after a workout—especially if you haven’t eaten—can give you a 4% boost in power during your next workout, as long as it’s within 4 hours.
If athletes eat a meal a few hours before working out, drinking carbs with water afterward doesn’t help their recovery as much as it does when they hadn’t eaten beforehand.
Adding protein to carbs and water doesn’t really help or hurt your workout performance if you're already getting the same amount of energy.
If you've just done an hour of medium-intensity exercise, eating 5–7 grams of carbs and 1.5–1.8 grams of protein for every kilogram you weigh can help your body recover best.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.