caffeine increases maximal fat oxidation during a graded exercise test: is there a diurnal variation? | journal of the international society of sports nutrition | full text
正在載入網址信息....
檢測到目標網址安全。
檢測到目標網址已失效。
檢測到目標網站有威脅,請謹慎。

there is evidence that caffeine increases the maximal fat oxidation rate (mfo) and aerobic capacity, which are known to be lower in the morning than in the afternoon. this paper examines the effect of caffeine intake on the diurnal variation of mfo during a graded exercise test in active men. using a triple-blind, placebo-controlled, crossover experimental design, 15 active caffeine-naïve men (age: 32 ± 7 years) completed a graded exercise test four times at seven-day intervals. the subjects ingested 3 mg/kg of caffeine or a placebo at 8 am in the morning and 5 pm in the afternoon (each subject completed tests under all four conditions in a random order). a graded cycling test was performed. mfo and maximum oxygen uptake (vo2max) were measured by indirect calorimetry, and the intensity of