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軽運動後のカフェイン摂取による持久力の回復について The Metabolic Effects of Caffeine on Recovery Immediately After Endurance Exercise 笹川, 友幸 ササガワ, トモユキ SASAGAWA, Tomoyuki 海保, 享代 カイホ, タカヨ KAIHO, Takayo 10245681 松本, 高明 マツモト, タカアキ Matsumoto, Takaaki 00147258 内藤, 祐子 ナイトウ, ユウコ Naito, Yuko 780.19 caffeine fat oxidation endurance exercise glycogen Caffeine administration has been shown to increase fat metabolism and endurance ability. However, the effects of caffeine on metabolism during endurance exercise with reduced muscle glycogen are not clear. 　Therefore, this single-blind crossover study aimed to investigate the effects of a slight prior depletion in internal glycogen on metabolic response during the following endurance exercise in 4 healthy males after ingestion of a low-concentration of caffeine. After 30min of cycling ergometer exercise at 50%VO_2VT, subjects ingested caffeine（3mg/body weight kg）or placebo（glucose 3mg/body weight kg）， and sat on a chair for 60min. Participants performed 30min of the continuous exercise at the same intensity again after the rest. During the first and second exercise, HR, gas analysis, and Borg’s scale were measured and fatty acid oxidation and sugar oxidation were calculated. During the second exercise with internal glycogen depletion, HR was significantly lower in the caffeine trial than in the placebo trial（caffeine：placebo=107±6：112±7, p<0.05）， and the respiratory exchange ratio was also significantly lower with caffeine than with placebo（caffeine：placebo=0.861±0.038：0.871±0.025, p<0.05）．Fatty acid oxidation was slightly higher with caffeine than with placebo（caffeine：placebo=0.343±0.083g/min：0.325±0.058g/min p=0.0540）．The results suggested that caffeine ingestion during continuous exercise with slight muscle glycogen deletion enhanced fat oxidation. application/pdf 国士舘大学体育・スポーツ科学学会 2015-03-01 jpn departmental bulletin paper VoR https://kokushikan.repo.nii.ac.jp/records/10432 1880-9316 AN10474825 体育・スポーツ科学研究 Kokushikan society of sport science 15 55 61 https://kokushikan.repo.nii.ac.jp/record/10432/files/1880_9316_015_07.pdf application/pdf 1.3 MB 2016-07-19