Tsetsonis N V, Hardman A E
Department of Physical Education, Sports, Science and Recreation Management, Loughborough University, Leicestershire, England.
Eur J Appl Physiol Occup Physiol. 1996;73(5):419-26. doi: 10.1007/BF00334418.
We have previously shown that the lipaemic response to a fatty meal was reduced when prolonged (2 h) low intensity exercise was taken some hours before eating. The purpose of this study was to test the hypothesis that the effect is quantitatively greater after exercise of moderate intensity than after exercise at low intensity. Six men and six women, mean age 26.9 (SEM 1.5) years, took part in three trials, each conducted over 2 days; on the afternoon of day 1 of each of two exercise trials the subjects walked on a treadmill for 90 min at either 31 (SEM 1) % or 61 (SEM 1) % of maximal oxygen uptake, i.e. low and moderate intensity, respectively; on the control trial the subjects refrained from exercise on day 1. On the morning of day 2 of each trial they ingested a test meal (1.28 g fat, 1.44 g carbohydrate, 76 kJ energy.kg-1 body mass); blood samples were obtained in the fasted state and for 6 h after the meal. Fasting serum triacylglycerol concentration and the area under the postprandial triacylglycerol-time curve were lower than in the control trial (P < 0.05) after moderate intensity walking but not after low intensity walking. The results suggest that the mitigation of the lipaemic response to a meal high in fat and carbohydrate is related to the intensity and/or the energy expenditure of the preceding exercise.
我们之前已经表明，在进食前数小时进行长时间（2小时）的低强度运动后，对高脂餐的血脂反应会降低。本研究的目的是检验以下假设：中等强度运动后的这种效果在数量上比低强度运动后更大。6名男性和6名女性，平均年龄26.9（标准误1.5）岁，参与了三项试验，每项试验持续2天；在两项运动试验中，每次试验第1天的下午，受试者分别在跑步机上以最大摄氧量的31（标准误1）%或61（标准误1）%的速度行走90分钟，即分别为低强度和中等强度；在对照试验中，受试者在第1天不进行运动。在每项试验第2天的上午，他们摄入一份测试餐（1.28克脂肪、1.44克碳水化合物、76千焦能量·千克-1体重）；在空腹状态以及餐后6小时采集血样。中等强度行走后，空腹血清三酰甘油浓度和餐后三酰甘油-时间曲线下面积低于对照试验（P<0.05），但低强度行走后则不然。结果表明，对高脂肪和高碳水化合物餐的血脂反应减轻与先前运动的强度和/或能量消耗有关。
