How does caffeine affect aerobic endurance?

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Abstract

EVIDENCED-BASED ANSWER

Consumption of caffeine (around 6 mg/kg) an hour before exercise produces small to moderate improvements in endurance, particularly in increasing time to voluntary exhaustion (TVE) and ratings of perceived exertion (SOR: A, meta-analyses of RCTs). Caffeine also produces small improvements in muscle strength and endurance (SOR: B, meta-analysis of 30 crossover studies and 4 RCTs).

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