Png Weileen, Bhaskaran Kalpana, Sinclair Andrew J, Aziz Abdul Rashid
Sports Science Centre, Singapore Sports Institute, Singapore Sports Council , Singapore .
Int J Food Sci Nutr. 2014 Aug;65(5):629-36. doi: 10.3109/09637486.2014.886187. Epub 2014 Feb 13.
To investigate the effect of low glycemic index (LGI) carbohydrate meal on subjective, metabolic and physiological responses, and endurance performance in the Ramadan fasted state.
During Ramadan, 12 Muslim men, in a randomized and crossover design, ingested for the sahur meal (i.e., last meal before commencement of the day's fast), either LGI (glycemic index = 37) or mixed (CON; ∼57) meal of equivalent macro-nutrient. At ∼12 h post-prandial, subjects completed a 60 min continuous run.
There were no significant differences between the two meals for ratings in perceived satiety, fullness, appetite and mood states. During steady-state exercise, there were no significant differences in metabolic and physiological measures. In the time-trial, distance ran was significantly lower in LGI versus CON meal trial, but with a corresponding lower perceived exertion in the LGI trial.
Compared to CON, ingesting LGI as the sahur meal did not provide any metabolic, physiological or performance benefits during endurance run performed 12 h post-prandial in Ramadan fasted state.
研究低血糖指数（LGI）碳水化合物餐对斋月禁食状态下主观、代谢和生理反应以及耐力表现的影响。
在斋月期间，12名穆斯林男性采用随机交叉设计，在封斋饭（即一天禁食开始前的最后一餐）时摄入等宏量营养素的LGI餐（血糖指数 = 37）或混合餐（对照组；约57）。餐后约12小时，受试者完成60分钟的持续跑步。
两餐在饱腹感、饱腹感、食欲和情绪状态评分方面无显著差异。在稳态运动期间，代谢和生理指标无显著差异。在计时赛中，LGI餐试验的跑步距离显著低于对照组餐试验，但LGI试验中相应的主观用力感觉较低。
与对照组相比，在斋月禁食状态下餐后12小时进行耐力跑时，将LGI作为封斋饭摄入未带来任何代谢、生理或表现方面的益处。
