Laboratory of Pharmacology, University of Sfax, Sfax, Tunisia.
Int J Sport Nutr Exerc Metab. 2012 Feb;22(1):11-8. doi: 10.1123/ijsnem.22.1.11.
The aim of this study was to evaluate the effects of aerobic training in a fasted versus a fed state during Ramadan on body composition and metabolic parameters in physically active men. Nineteen men were allocated to 2 groups: 10 practicing aerobic training in a fasted state (FAST) and 9 training in an acutely fed state (FED) during Ramadan. All subjects visited the laboratory for a total of 4 sessions on the following occasions: 3 days before Ramadan (Bef-R), the 15th day of Ramadan; the 29th day of Ramadan (End-R), and 21 days after Ramadan. During each session, subjects underwent anthropometric measurement, completed a dietary questionnaire, and provided fasting blood and urine samples. Body weight decreased in FAST and FED by 1.9% (p<.001) and 2.6% (p=.046), respectively. Body fat percentage decreased only in FAST by 6.2% (p=.016). FAST experienced an increase in the following parameters from Bef-R to End-R: urine specific gravity (0.64%, p=.012), urea (8.7%, p<.001), creatinine (7.5%, p<.001), uric acid (12.7%, p<.001), sodium (1.9%, p=.003), chloride (2.6%, p<.001), and high-density lipoprotein cholesterol (27.3%, p<.001). Of these parameters, only creatinine increased (5.8%, p=.004) in FED. Creatinine clearance values of FAST decreased by 8.9% (p<.001) and by 7.6% in FED (p=.01) from Bef-R to End-R. The authors conclude that aerobic training in a fasted state lowers body weight and body fat percentage. In contrast, fed aerobic training decreases only body weight. In addition, Ramadan fasting induced change in some metabolic parameters in FAST, but these changes were absent in FED.
本研究旨在评估在斋月期间，空腹与进食状态下进行有氧运动对活跃男性的身体成分和代谢参数的影响。19 名男性被分配到 2 组：10 名在斋月期间进行空腹有氧运动（FAST），9 名在斋月期间进行急性进食有氧运动（FED）。所有受试者在以下四个时间点总共访问实验室 4 次：斋月前 3 天（Bef-R）、斋月第 15 天、斋月第 29 天（End-R）和斋月结束后 21 天。在每次访视中，受试者接受人体测量学测量、完成饮食问卷，并提供空腹血液和尿液样本。体重在 FAST 和 FED 中分别下降了 1.9%（p<.001）和 2.6%（p=.046）。仅在 FAST 中体脂百分比下降了 6.2%（p=.016）。从 Bef-R 到 End-R，FAST 经历了以下参数的增加：尿比重（0.64%，p=.012）、尿素（8.7%，p<.001）、肌酐（7.5%，p<.001）、尿酸（12.7%，p<.001）、钠（1.9%，p=.003）、氯（2.6%，p<.001）和高密度脂蛋白胆固醇（27.3%，p<.001）。其中，只有肌酐增加（5.8%，p=.004）在 FED 中。从 Bef-R 到 End-R，FAST 的肌酐清除率值下降了 8.9%（p<.001），而 FED 下降了 7.6%（p=.01）。作者得出结论，空腹有氧运动可降低体重和体脂百分比。相比之下，进食有氧运动仅降低体重。此外，在 FAST 中，斋月禁食引起了一些代谢参数的变化，但在 FED 中这些变化不存在。
