Poehlman E T, Arciero P J, Melby C L, Badylak S F
Department of Medicine, University of Vermont, Burlington 05405.
Am J Clin Nutr. 1988 Aug;48(2):209-13. doi: 10.1093/ajcn/48.2.209.
Resting metabolic rate (RMR), thermic effect of a meal (TEM), and associated hormonal changes were studied in vegetarians and nonvegetarians. RMR was established by indirect calorimetry in 12 male vegetarians (VEG) and 11 nonvegetarians (NVEG) of similar body fat and aerobic fitness. Subjects ingested a liquid meal and TEM was measured for 180 min postprandially. Plasma concentrations of glucose, insulin and thyroid hormones (T3 and T4) were determined before and after meal ingestion. Absolute RMR was comparable between VEG and NVEG. However, TEM was lower (p less than 0.01) in VEG (55.8 +/- 3.3 kcal/180 min) vs NVEG (76.4 +/- 3.6). Plasma levels of glucose and insulin were similar between the two groups whereas plasma T3 was slightly but nonsignificantly lower in vegetarians. A vegetarian diet may decrease the postprandial thermic response; this does not support the supposition that an elevated TEM is a factor contributing to the lower body weight in vegetarians than in omnivores.
对素食者和非素食者的静息代谢率（RMR）、食物热效应（TEM）及相关激素变化进行了研究。通过间接测热法对12名身体脂肪和有氧适能相似的男性素食者（VEG）和11名非素食者（NVEG）测定RMR。受试者摄入流食，并在餐后180分钟测量TEM。在摄入食物前后测定血浆葡萄糖、胰岛素和甲状腺激素（T3和T4）的浓度。VEG和NVEG的绝对RMR相当。然而，VEG的TEM（55.8±3.3千卡/180分钟）低于NVEG（76.4±3.6）（p＜0.01）。两组间血浆葡萄糖和胰岛素水平相似，而素食者的血浆T3略低，但差异无统计学意义。素食饮食可能会降低餐后热反应；这并不支持TEM升高是素食者体重低于杂食者的一个因素这一假设。
