a College of Health and Human Sciences, Health, Human Performance, and Recreation (HHPR), One Bear Place no. 97313, Baylor University, Waco, TX 76798, USA.
b Department of Human Movement Sciences, Human Movement Sciences Research Center, University of Costa Rica, PO Box 239-1200, San José, Costa Rica.
Appl Physiol Nutr Metab. 2017 Sep;42(9):986-993. doi: 10.1139/apnm-2016-0581. Epub 2017 May 30.
Reductions in postprandial lipemia have been observed following aerobic exercise of sufficient energy expenditure. Increased excess postexercise oxygen consumption (EPOC) has been documented when comparing high- versus low-intensity exercise. The contribution of EPOC energy expenditure to alterations in postprandial lipemia has not been determined. The purpose of this study was to evaluate the effects of low- and high-intensity exercise on postprandial lipemia in healthy, sedentary, overweight and obese men (age, 43 ± 10 years; peak oxygen consumption, 31.1 ± 7.5 mL·kg·min; body mass index, 31.8 ± 4.5 kg/m) and to determine the contribution of EPOC to reductions in postprandial lipemia. Participants completed 4 conditions: nonexercise control, low-intensity exercise at 40%-50% oxygen uptake reserve (LI), high-intensity exercise at 70%-80% oxygen uptake reserve (HI), and HI plus EPOC re-feeding (HI+EERM), where the difference in EPOC energy expenditure between LI and HI was re-fed in the form of a sports nutrition bar (Premier Nutrition Corp., Emeryville, Calif., USA). Two hours following exercise participants ingested a high-fat (1010 kcals, 99 g sat fat) test meal. Blood samples were obtained before exercise, before the test meal, and at 2, 4, and 6 h postprandially. Triglyceride incremental area under the curve was significantly reduced following LI, HI, and HI+EERM when compared with nonexercise control (p < 0.05) with no differences between the exercise conditions (p > 0.05). In conclusions, prior LI and HI exercise equally attenuated postprandial triglyceride responses to the test meal. The extra energy expended during EPOC does not contribute significantly to exercise energy expenditure or to reductions in postprandial lipemia in overweight men.
已经观察到，进行足够能量消耗的有氧运动后，餐后血脂会减少。与低强度运动相比，高强度运动时会记录到过量的运动后耗氧量（EPOC）增加。EPOC 能量消耗对餐后血脂变化的贡献尚未确定。本研究的目的是评估低强度和高强度运动对健康、久坐、超重和肥胖男性（年龄 43 ± 10 岁；峰值耗氧量 31.1 ± 7.5 mL·kg·min；体重指数 31.8 ± 4.5 kg/m）餐后血脂的影响，并确定 EPOC 对减少餐后血脂的贡献。参与者完成了 4 种条件：非运动对照、40%-50%摄氧量储备的低强度运动（LI）、70%-80%摄氧量储备的高强度运动（HI）和 HI 加 EPOC 再喂养（HI+EERM），其中 LI 和 HI 之间的 EPOC 能量消耗差异以运动营养棒的形式（Premier Nutrition Corp.，加利福尼亚州埃默里维尔，美国）进行再喂养。运动后 2 小时，参与者摄入高脂肪（1010 千卡，99 克饱和脂肪）测试餐。在运动前、测试餐前以及餐后 2、4 和 6 小时采集血液样本。与非运动对照相比，LI、HI 和 HI+EERM 后甘油三酯增量曲线下面积明显降低（p < 0.05），但运动条件之间无差异（p > 0.05）。总之，之前的 LI 和 HI 运动同样减弱了超重男性对测试餐的餐后甘油三酯反应。EPOC 期间消耗的额外能量对运动能量消耗或餐后血脂减少没有显著贡献。
