Gill J M, Murphy M H, Hardman A E
Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Leicestershire, UK.
Med Sci Sports Exerc. 1998 Oct;30(10):1515-20. doi: 10.1097/00005768-199810000-00008.
The purpose of this study was to assess whether exercise performed in continuous and discontinuous formats reduced postprandial lipemia to a similar degree.
Fifteen normolipidemic and three borderline hyperlipidemic healthy males (ages 30.6 +/- 9.0 (mean +/- SD) yr, BMI 23.1 +/- 1.4 kg.m-2) participated in three trials, each conducted over 2 d. Subjects refrained from exercise for the 2 d preceding each trial. On day one, subjects rested (control trial), or ran at 60% of maximal oxygen uptake in either one 90-min session (continuous exercise trial), or three 30-min sessions (intermittent exercise trial). On day two, subjects ingested a high-fat test breakfast (1.2 g fat, 1.2 g carbohydrate, 70 kJ energy per kilogram body mass). Blood samples were obtained in the fasted state and at intervals for 6 h postprandially.
Fasting plasma triacylglycerol (TAG) concentrations did not differ between trials. Areas under the TAG versus time curves were 18.1 +/- 6.7% (mean +/- SEM) and 17.7 +/- 7.6% (both P < 0.05) lower than control in the continuous exercise and intermittent exercise trials, respectively. Plasma glucose responses to the test meal did not differ between trials, but the serum insulin response was lower in the intermittent exercise trial compared with that in the control.
The results suggest that both intermittent and continuous exercise can reduce postprandial lipemia.
本研究旨在评估以连续和间断形式进行的运动是否能在相似程度上减轻餐后血脂异常。
15名血脂正常和3名临界高脂血症的健康男性（年龄30.6±9.0（均值±标准差）岁，体重指数23.1±1.4 kg·m-2）参与了三项试验，每项试验持续2天。在每次试验前的2天，受试者避免运动。第一天，受试者休息（对照试验），或以最大摄氧量的60%进行跑步，分为一个90分钟的时段（连续运动试验）或三个30分钟的时段（间歇运动试验）。第二天，受试者摄入高脂肪测试早餐（每千克体重含1.2克脂肪、1.2克碳水化合物、70千焦能量）。在空腹状态和餐后6小时内每隔一段时间采集血样。
各试验间空腹血浆三酰甘油（TAG）浓度无差异。在连续运动试验和间歇运动试验中，TAG与时间曲线下面积分别比对照低18.1±6.7%（均值±标准误）和17.7±7.6%（均P<0.05）。各试验间对测试餐的血浆葡萄糖反应无差异，但间歇运动试验中的血清胰岛素反应低于对照试验。
结果表明，间歇运动和连续运动均可减轻餐后血脂异常。
