Arvaniti K, Richard D, Tremblay A
Center for Research on Energy Metabolism, Laval University, Quebec, Canada.
Br J Nutr. 2000 May;83(5):489-95.
The aim of this present study was to determine the reliability of a buffet-type meal as a measure of spontaneous energy and macronutrient intake. In addition, we evaluated the short-term effects of diet on the composition of the substrate mix oxidized postprandially. Fourteen male subjects had ad libitum access to a variety of foods from a buffet-type meal offered in the laboratory during two identical sessions. The foods comprising the test meal had varying amounts of protein, lipid and carbohydrate. The results showed that there were significant intraclass correlations (ri) for energy (ri 0.97, P = 0.0001), lipid (ri 0.97, P = 0.0001), carbohydrate (ri 0.92, P = 0.0003) and protein (ri 0.82, P = 0.0072) intake between the two meal sessions. Hunger and fullness levels measured immediately before and during 4 h after the meal were identical under the two conditions. In addition, there was no significant difference between the two sessions for RQ and resting energy expenditure, which showed significant reproducibility for measurements obtained immediately before, immediately after, as well as 30 min after, the buffet. This present study demonstrates the high reproducibility of energy and macronutrient intake and oxidation rate values obtained with a buffet-type meal in healthy male subjects and suggests that the use of this test is a reliable method for assessment of macronutrient preferences in the laboratory.
本研究的目的是确定自助餐式膳食作为自发能量和常量营养素摄入量衡量指标的可靠性。此外，我们评估了饮食对餐后氧化的底物混合物组成的短期影响。14名男性受试者在两个相同的时间段内可以随意取用实验室提供的自助餐式膳食中的各种食物。构成测试膳食的食物含有不同量的蛋白质、脂质和碳水化合物。结果表明，两次用餐期间能量（组内相关系数ri = 0.97，P = 0.0001）、脂质（ri = 0.97，P = 0.0001）、碳水化合物（ri = 0.92，P = 0.0003）和蛋白质（ri = 0.82，P = 0.0072）摄入量的组内相关系数显著。在两种情况下，用餐前及用餐后4小时内测量的饥饿和饱腹感水平相同。此外，两次测量的呼吸商（RQ）和静息能量消耗没有显著差异，这表明在自助餐前、自助餐后立即以及自助餐后30分钟获得的测量值具有显著的可重复性。本研究证明了在健康男性受试者中，自助餐式膳食所获得的能量、常量营养素摄入量和氧化率值具有高度可重复性，并表明使用该测试是在实验室中评估常量营养素偏好的可靠方法。
