Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, EX1 2LU, UK.
Eur J Nutr. 2014 Feb;53(1):309-19. doi: 10.1007/s00394-013-0529-3. Epub 2013 May 8.
Foods with low glycaemic index (LGI) are reported to suppress appetite mainly in overweight population but have not been investigated in athletic adults.
The aim of this study was to compare the short-term effects of LGI and high GI (HGI) meals over a day on subsequent subjective appetite sensation, energy intake, energy expenditure, energy balance and resting metabolic rate in physically active males.
This cross-sectional randomized crossover study included 14 active males (mean ± SD; age 34.5 ± 8.9 years, body mass index 22.8 ± 2.1 kg m(-2)) to consume LGI and HGI meals on two separate days. On each trial day, participants consumed a breakfast in the laboratory and then left with a packed lunch, dinner and snacks. Appetite scores, energy intake and expenditure were assessed.
The area under the curve for appetite scores of the HGI trial was significantly smaller than that of the LGI trial during the laboratory period (p = 0.027) and throughout the day (p = 0.009). No significant differences in energy intake, energy expenditure, energy balance and resting metabolic rate were found between groups, between the trial days and between the corresponding post-trial days.
These results show that frequent ingestion of the HGI meals, contrary to the previous reports, suppresses appetite more than that of LGI meals, but did not affect energy balance in physically active normal-weight males.
低升糖指数（LGI）食物据称可主要抑制超重人群的食欲，但尚未在运动员群体中进行研究。
本研究旨在比较 LGI 和高升糖指数（HGI）餐在一天内对活跃男性的随后主观食欲感、能量摄入、能量消耗、能量平衡和静息代谢率的短期影响。
本交叉随机对照交叉研究纳入了 14 名活跃男性（平均 ± 标准差；年龄 34.5 ± 8.9 岁，体重指数 22.8 ± 2.1 kg/m²），分别在两天内食用 LGI 和 HGI 餐。在每个试验日，参与者在实验室中食用早餐，然后带上打包的午餐、晚餐和零食离开。评估了食欲评分、能量摄入和消耗。
HGI 试验的食欲评分曲线下面积在实验室期间（p = 0.027）和全天（p = 0.009）均显著小于 LGI 试验。组间、试验日之间以及相应的试验后日之间，能量摄入、能量消耗、能量平衡和静息代谢率均无显著差异。
这些结果表明，与之前的报告相反，频繁摄入 HGI 餐会比 LGI 餐更能抑制食欲，但在正常体重的活跃男性中不会影响能量平衡。
