Effects of intragastric infusions of fat and carbohydrate on appetite ratings and food intake from a test meal

被引:40
作者
Cecil, JE [1 ]
Castiglione, K [1 ]
French, S [1 ]
Francis, J [1 ]
Read, W [1 ]
机构
[1] Univ Sheffield, Ctr Human Nutr, No Gen Hosp, Sheffield S5 7AU, S Yorkshire, England
基金
英国生物技术与生命科学研究理事会;
关键词
D O I
10.1006/appe.1997.0109
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Previous studies using meal preloads have indicated that carbohydrate has a greater satiating power than fat. To investigate the effects of macronutrients on ingestion and satiety, without the influence of meal design and orosensory factors, two groups of ten healthy, fasted male volunteers took part in two separate experiments involving rapid direct intragastric infusions of macronutrients. In the first experiment volunteers received isocaloric infusions of either Intralipid, or 1:1 Intralipid and glucose mixture or saline over 15 min on three separate occasions. In a second experiment volunteers received isocaloric infusions of either Intralipid or glucose. For both studies, appetite ratings were recorded for the first two hours of the study and energy and macronutrient intakes were evaluated from a test meal given 1.5 h after the infusion. Food diaries were used to monitor food intake for the remainder of the study day. In the first experiment, both Intralipid and the Intralipid/glucose mixture suppressed appetite ratings and reduced energy intake at lunch compared with saline but had no effect on energy intake during the remainder of the study day. No differences were found between nutrient conditions in suppressing appetite ratings or energy intake. In the second experiment there were no differences between the effects of Intralipid and glucose on hunger, fullness or on energy intake from the test meal or intake over the remainder of the day. Taken together, these results suggest that intragastric infusions of either Intralipid, glucose or a mixture of the two, reduced hunger and increased fullness, but they failed to confirm the hypothesis that different macronutrients have different satiating capacities. (C) 1998 Academic Press Limited.
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页码:65 / 77
页数:13
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