The effects of dietary components of carbohydrate on performance and sleepiness during night work

本研究旨在探讨高碳水化合物(HC；70E%(能量百分比)碳水化合物、5E%脂肪和25E%蛋白质)和低碳水化合物(LC；30E%碳水化合物、45E%脂肪和25E%蛋白质)饮食对夜间工作时运动成绩、主观和客观嗜睡以及生理机能的影响。12名健康的男性参与者在实验室里保持清醒10小时。模拟夜班时间固定为22：00至8：00。每个参与者都被指示独立进行每小时一次的测试，包括30分钟的任务，15分钟的测试和15分钟的休息。参与者被要求在模拟夜间工作期间每小时完成30分钟的英语转录任务。分别于18：30、21：00和2：00分3次进餐。结果表明，在2：00进食后，HC饮食增加了小鼠的主观嗜睡感，延长了反应时间。研究表明，与LC饮食相比，HC饮食在后半夜会导致表现恶化和嗜睡程度增加。

The aim of this study was to investigate the effects of high-carbohydrate (HC ; 70 E% (energy percent) carbohydrates, 5 E% fat and 25 E% protein) and low-carbohydrate (LC; 30 E% carbohydrates, 45 E% fat and 25 E% protein) diet on performance, subjective and objective sleepiness, and physiological functions during night work. Twelve healthy male participants were kept awake for 10 h in a laboratory. The period of the simulated night work was fixed from 22:00 until 8:00. Each participant was instructed to independently conduct hourly batteries consisting of a 30-minute task, 15-minute tests and a 15-minute break. Participants were required to 30-minute English transcription tasks hourly during the simulated night work. Meals were given 3 times at 18:30, 21:00 and 2:00.The results showed that the HC-diet increased of subjective sleepiness and prolong response time after eating the diet at 2:00. The study suggested that the HC-diet caused deterioration of performance and increased sleepiness as compared to LC-diet at latter half of night.