Effects of acute exercise on postprandial triglyceride response after a high-fat meal in overweight black and white adolescents
Effects of acute exercise on postprandial triglyceride response after a high-fat meal in overweight black and white adolescents
复制标题
DOI：
10.1038/ijo.2013.29
复制
发表时间：
2013-07-01
影响因子：
4.9
通讯作者：
Arslanian, S.
中科院分区：
文献类型：
--
作者：
Lee, S.;Burns, S. F.;Arslanian, S.
目的：研究急性运动对超重黑人和白人青少年餐后甘油三酯(TG)代谢的影响。设计和研究对象：21名黑人和17名白人青少年(12-18岁，体重指数和GT；=85%)在对照和锻炼试验期间，采用平衡随机设计进行了两次评估。在两个试验的第二天，参与者都吃了一顿高脂早餐(70%卡路里来自脂肪)，并在禁食状态和餐后6h采血检测甘油三酯浓度。结果：条件对餐后峰值甘油三酯浓度(P=0.01)和曲线下面积(AUC)(P=0.003)有显著的主效应，运动组的TG和TG-AUC峰值低于对照组。包括Tanner分期、性别、总脂肪(Kg)和内脏脂肪组织(VAT)为自变量的逐步多元回归分析表明，在白人中，VAT对餐后TG-AUC的预测作用最强(P<；0.05)，分别解释了对照组和运动试验中TG-AUC的56%和25%的变异。在黑人中，VAT与餐后TG-AUC无关，独立于试验。结论：在超重的白人青少年中，在高脂饮食前进行单次有氧运动有利于降低餐后TG浓度，比黑人青少年，特别是内脏肥胖症增加的青少年更有利。
OBJECTIVE: We examined the effects of acute exercise on postprandial triglyceride (TG) metabolism following a high-fat meal in overweight black vs white adolescents.DESIGN AND SUBJECTS: Twenty-one black and 17 white adolescents (12-18 yrs, body mass index >= 85th percentile) were evaluated twice, during control versus exercise trials, 1-4 weeks apart, in a counterbalanced randomized design. In the control trial, participants performed no exercise on day 1. In the exercise trial, participants performed a single bout of 60-min exercise (50% VO2 peak) on a cycle ergometer on day 1. On day 2 of both trials, participants consumed a high-fat breakfast (70% calories from fat) and blood was sampled for TG concentration in the fasted state and for 6 h postprandially.RESULTS: There was a significant main effect of condition on postprandial peak TG concentration (P = 0.01) and TG area under the curve (AUC) (P = 0.003), suggesting that independent of race, peak TG and TG-AUC was lower in the exercise trial vs control trial. Including Tanner stage, gender, total fat (kg) and visceral adipose tissue (VAT) as independent variables, stepwise multiple regression analyses revealed that in whites, VAT was the strongest (P < 0.05) predictor of postprandial TG-AUC, explaining 56 and 25% of the variances in TG-AUC in the control and exercise trials, respectively. In blacks, VAT was not associated with postprandial TG-AUC, independent of trial.CONCLUSION: A single bout of aerobic exercise preceding a high-fat meal is beneficial to reduce postprandial TG concentrations in overweight white adolescents to a greater extent than black adolescents, particularly those with increased visceral adiposity.