Effect of prior moderate exercise on postprandial metabolism in men with type 2 diabetes: Heterogeneity of responses

被引:38
作者
Gill, Jason M. R.
Al-Mamari, Ali
Ferrell, William R.
Cleland, Stephen J.
Perry, Colin G.
Sattar, Naveed
Packard, Chris J.
Caslake, Muriel J.
Petrie, John R.
机构
[1] Univ Glasgow, Inst Biomed & Life Sci, IDEAL, Glasgow G12 8QQ, Lanark, Scotland
[2] Univ Glasgow, Div Cardiovasc & Med Sci, Glasgow G12 8QQ, Lanark, Scotland
[3] Univ Glasgow, Dept Vasc Biochem, Glasgow G12 8QQ, Lanark, Scotland
关键词
exercise; type; 2; diabetes; postprandial lipemia; triglyceride; ketogenesis; 3-hydroxybutyrate;
D O I
10.1016/j.atherosclerosis.2006.10.007
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Prior moderate exercise has been shown consistently to reduce postprandial triglyceride (TG) concentrations in non-diabetic adults, but its effects in men with type 2 diabetes are not known. This study aimed to determine the effect of moderate exercise on postprandial metabolism in men with type 2 diabetes. Ten middle-aged men with type 2 diabetes underwent two oral fat tolerance tests (blood taken fasting and for 8h after a meal containing 80g fat, 70g carbohydrate) in random order. On the afternoon before one test, participants performed a 90-min treadmill walk (Exercise); no exercise was performed before the Control test. Exercise significantly reduced fasting glucose (Control: 9.08 +/- 0.75 mmol I-1, Exercise: 8.40 +/- 0.72 mmol I-1, p = 0.033) and insulin (Control: 8.01 +/- 0.98 mu U ml(-1), Exercise: 6.81 +/- 0.93 mu U ml(-1), p = 0.046) and increased fasting 3-hydroxybutyrate (Control: 87.1 +/- 19.2 mu mol I-1, Exercise: 134.3 +/- 28.4 mu mol I-1, p = 0.011); reduced postprandial insulin by 11.0% (p = 0.04) and increased postprandial 3-hydroxybutrate by 31.8% (p 0.03); but did not significantly change fasting or postprandial triglyceride or NEFA concentrations. However, the exercise-induced change in postprandial triglyceride concentration ranged from -32.3 to +28.3% and the exercise-induced change in fasting 3-hydroxybutyrate concentration (a marker of hepatic fatty acid oxidation) was highly correlated with the exercise-induced changes in fasting and postprandial triglyceride (r=0.68, p=0.03 for both). Thus, inter-individual variation in propensity to increase hepatic fatty acid oxidation following exercise may account for the considerable heterogeneity in triglyceride responses to moderate exercise observed in men with type 2 diabetes. (C) 2006 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:134 / 143
页数:10
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