Hormonal
Acute L-arginine supplementation (6–8 g) taken 60–90 minutes before strength training provides no ergogenic effect on muscular endurance, peak torque, or resistance rate.
Do not take L-arginine specifically to boost your strength training performance. Taking 6-8 grams an hour before lifting does not increase your strength, endurance, or muscle growth compared to a placebo. While it may increase blood flow, this does not help you lift more weight or do more reps.
Acute L-arginine supplementation provides no ergogenic effect on strength training performance.
Why this rating
Moderate quality evidence based on GRADE score; limited by small sample size (n=30) and only 3 studies, but low risk of bias and heterogeneity.
Source
Effectiveness of acute L-arginine supplementation on physical performance in strength training: a systematic review and meta-analysis
Camila Pasa et al. · F1000Research · 2022
DOI 10.12688/f1000research.73905.2
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