Postprandial lipemia in young men and women of contrasting training status

Herd, S. L., Lawrence, J. E. M., Malkova, D. , Murphy, M. H., Mastana, S. and Hardman, A. E. (2000) Postprandial lipemia in young men and women of contrasting training status. Journal of Applied Physiology, 89(5), pp. 2049-2056. (doi: 10.1152/jappl.2000.89.5.2049) (PMID:11053361)

Abstract

This study compared the postprandial triacylglycerol (TAG) response to a high-fat meal in trained and untrained normolipidemic young adults after 2 days' abstinence from exercise. Fifty-three subjects (11 endurance-trained men, 9 endurance-trained women, 10 sprint/strength-trained men, 11 untrained men, 11 untrained women) consumed a meal (1.2 g fat, 1.1 g carbohydrate, 66 kJ per kg body mass) after a 12-h fast. Venous blood samples were obtained in the fasted state and at intervals until 6 h. Postprandial responses were the areas under the plasma or serum concentration-vs.-time curves. Neither fasting TAG concentrations nor the postprandial TAG response differed between trained and untrained subjects. The insulinemic response was 29% lower in endurance-trained men than in untrained men [mean difference −37.4 (95% confidence interval −62.9 to −22.9) μIU/ml × h, P = 0.01]. Responses of plasma glucose, serum insulin, and plasma nonesterified fatty acids were all lower for endurance-trained men than for untrained men. These findings suggest that, in young adults, no effect of training on postprandial lipemia can be detected after 60 h without exercise. The effect on postprandial insulinemia may persist for longer.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Malkova, Dr Dalia
• Authors: Herd, S. L., Lawrence, J. E. M., Malkova, D., Murphy, M. H., Mastana, S., and Hardman, A. E.
• College/School: College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
• Journal Name: Journal of Applied Physiology
• Publisher: American Physiological Society
• ISSN: 8750-7587
• ISSN (Online): 1522-1601
• Published Online: 01 November 2000