抄録
The purpose of this study was to analyze the effects of caffeine ingestion on the slow component of oxygen uptake (ΔVO2) during high-intensity endurance exercise. Nine subjects (8 male and 1 female; age: 21 ± 1 years; VO2 max: 57.9 ± 1.5 ml kg−1 min−1) performed two 9-min tests on a treadmill at a running velocity eliciting 90% of their VO2 max, 60 min after ingesting either a placebo capsule (PLAC) or a capsule containing a caffeine dose of 5 mg (kg body mass)−1 [CAFF]. The mean values of ΔVO2 were significantly lower in CAFF than in PLAC (83 ± 31 ml min−1 vs. 167 ± 26 ml min−1, respectively; p < 0.05). These findings suggest that the ergogenic effect of caffeine in a high-intensity endurance exercise shown in previous research may be partly mediated by a possible attenuation of the VO2 slow component.
