Coffee Ingestion Enhances 1-Mile Running Race Performance

CONTEXT: Caffeine, often in the form of coffee, is frequently used as a supplement by athletes in an attempt to facilitate improved performance during exercise. PURPOSE: To investigate the effectiveness of coffee ingestion as an ergogenic aid prior to a 1-mile (1609 m) race. METHODS: decaffeinated coffee (DEC), or a placebo (PLA). All trials were dissolved in 300 mL of hot water. RESULTS: ; 95% CI, 5.5-7.3; d = 3.86) following the ingestion of COF. However, only a trivial difference between DEC and PLA was observed (P = .602; 95% CI, -0.09 to 0.03; d = 0.17). Furthermore, only trivial differences were observed for blood glucose (P = .839; [Formula: see text]) and lactate (P = .096; [Formula: see text]) and maximal heart rate (P = .286; [Formula: see text]) between trials. CONCLUSIONS: of caffeinated coffee, 1-mile race performance was enhanced by 1.9% and 1.3% compared with placebo and decaffeinated coffee, respectively, in trained male runners.