Thermic effect of food at rest, during exercise, and after exercise in lean and obese men of similar body weight.
Thermic effect of food at rest, during exercise, and after exercise in lean and obese men of similar body weight.
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体重相似的瘦人和肥胖男性在休息时、运动期间和运动后食物的热效应。
DOI：
10.1172/jci112065
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
Pi-Sunyer,FX
中科院分区：
文献类型：
--
作者：
Segal,KR;Gutin,B;Nyman,AM;Pi-Sunyer,FX
研究了8名瘦男性（平均值+/- SEM，10 +/- 1%体脂，流体静力学测定）和8名肥胖男性（30 +/- 2%体脂）在休息时、30分钟自行车测力计运动期间和运动后食物的热效应。瘦和肥胖的平均值相匹配的年龄，身高，体重和体重指数（BMI），以确定产热和身体成分之间的关系，独立于体重。所有男性都超重，定义为BMI在26-34之间，但肥胖者的体脂是瘦男性的三倍，瘦体重明显低于瘦男性。代谢率通过间接量热法在四种条件下测量，在不同的早晨，以随机顺序，在过夜禁食后：3小时的休息后吸收状态，3小时的休息后，750千卡的混合餐（14%蛋白质，31.5%脂肪和54.5%碳水化合物）;在30分钟的自行车和3小时后运动后的吸收状态;以及在测试餐后30分钟和运动后3小时进行的30分钟自行车运动期间。食物的热效应，即吸收后和餐后能量消耗之间的差异，在休息、运动后和运动条件下，瘦男性明显高于肥胖男性：瘦男性和肥胖男性的代谢率增量分别为48 +/- 7和28 +/- 4千卡，休息3小时（P <0.05）;运动后3小时内44 +/- 7 vs. 16 +/- 5 kcal（P <0.05）;运动30分钟内19 +/- 3 vs. 6 +/- 3 kcal（P <0.05）。在安静（r = -0.55）、运动后（r = -0.66）和运动（r = -0.58）条件下，食物的热效应与体脂含量呈显著负相关。这项研究的结果表明，对于总体重和BMI相似的男性，身体成分是餐后产热的重要决定因素;与瘦男性相比，肥胖男性的反应明显迟钝。图片
The thermic effect of food at rest, during 30 min of cycle ergometer exercise, and after exercise was studied in eight lean (mean +/- SEM, 10 +/- 1% body fat, hydrostatically-determined) and eight obese men (30 +/- 2% body fat). The lean and obese mean were matched with respect to age, height, weight, and body mass index (BMI) to determine the relationship between thermogenesis and body composition, independent of body weight. All men were overweight, defined as a BMI between 26-34, but the obese had three times more body fat and significantly less lean body mass than the lean men. Metabolic rate was measured by indirect calorimetry under four conditions on separate mornings, in randomized order, after an overnight fast: 3 h of rest in the postabsorptive state; 3 h of rest after a 750-kcal mixed meal (14% protein, 31.5% fat, and 54.5% carbohydrate); during 30 min of cycling and for 3 h post exercise in the postabsorptive state; and during 30 min of cycling performed 30 min after the test meal and for 3 h post exercise. The thermic effect of food, which is the difference between postabsorptive and postprandial energy expenditure, was significantly higher for the lean than the obese men under the rest, post exercise, and exercise conditions: the increments in metabolic rate for the lean and obese men, respectively, were 48 +/- 7 vs. 28 +/- 4 kcal over 3 h rest (P less than 0.05); 44 +/- 7 vs. 16 +/- 5 kcal over 3 h post exercise (P less than 0.05); and 19 +/- 3 vs. 6 +/- 3 kcal over 30 min of exercise (P less than 0.05). The thermic effect of food was significantly negatively related to body fat content under the rest (r = -0.55), post exercise (r = -0.66), and exercise (r = -0.58) conditions. The results of this study indicate that for men of similar total body weight and BMI, body composition is a significant determinant of postprandial thermogenesis; the responses of obese are significantly blunted compared with those of lean men.Images
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