Ferguson M A, Alderson N L, Trost S G, Essig D A, Burke J R, Durstine J L
Department of Exercise Science, University of South Carolina, Columbia, South Carolina 29208, USA.
J Appl Physiol (1985). 1998 Sep;85(3):1169-74. doi: 10.1152/jappl.1998.85.3.1169.
The purpose of this study was to determine the threshold of exercise energy expenditure necessary to change blood lipid and lipoprotein concentrations and lipoprotein lipase activity (LPLA) in healthy, trained men. On different days, 11 men (age, 26.7 +/- 6.1 yr; body fat, 11.0 +/- 1.5%) completed four separate, randomly assigned, submaximal treadmill sessions at 70% maximal O2 consumption. During each session 800, 1,100, 1,300, or 1,500 kcal were expended. Compared with immediately before exercise, high-density lipoprotein cholesterol (HDL-C) concentration was significantly elevated 24 h after exercise (P < 0.05) in the 1,100-, 1,300-, and 1,500-kcal sessions. HDL-C concentration was also elevated (P < 0.05) immediately after and 48 h after exercise in the 1,500-kcal session. Compared with values 24 h before exercise, LPLA was significantly greater (P < 0.05) 24 h after exercise in the 1,100-, 1,300-, and 1,500-kcal sessions and remained elevated 48 h after exercise in the 1,500-kcal session. These data indicate that, in healthy, trained men, 1,100 kcal of energy expenditure are necessary to elicit increased HDL-C concentrations. These HDL-C changes coincided with increased LPLA.
本研究的目的是确定健康、受过训练的男性改变血脂、脂蛋白浓度和脂蛋白脂肪酶活性（LPLA）所需的运动能量消耗阈值。在不同的日子里，11名男性（年龄26.7±6.1岁；体脂11.0±1.5%）以最大耗氧量的70%完成了四次单独的、随机分配的亚极量跑步机训练。在每次训练中，能量消耗分别为800、1100、1300或1500千卡。与运动前即刻相比，在消耗1100、1300和1500千卡的训练后24小时，高密度脂蛋白胆固醇（HDL-C）浓度显著升高（P<0.05）。在消耗1500千卡的训练后即刻和48小时，HDL-C浓度也升高（P<0.05）。与运动前24小时的值相比，在消耗1100、1300和1500千卡的训练后24小时，LPLA显著升高（P<0.05），在消耗1500千卡的训练后48小时仍保持升高。这些数据表明，对于健康、受过训练的男性，消耗1100千卡能量对于提高HDL-C浓度是必要的。这些HDL-C的变化与LPLA的增加相一致。
