Title

Improvements in glucose tolerance in obese males with abnormal glucose tolerance following 10 days of aerobic exercise

Authors

Authors

J. C. Denton; R. Schultz; A. Z. Jamurtas;T. J. Angelopoulos

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Prev. Med.

Keywords

aerobic exercise; obesity; glucose tolerance; abnormal glucose tolerance; INSULIN RESPONSES; MEN; RESISTANCE; ADIPOSITY; INTENSITY; NIDDM; Public, Environmental & Occupational Health; Medicine, General &; Internal

Abstract

Background. Aerobic exercise training has been shown to produce beneficial changes in glucose tolerance and insulin sensitivity in obese individuals if performed at high enough intensities and/or durations. We examined the effects of a moderate intensity, short-term exercise training protocol on glucose tolerance in obese males with glucose intolerance. Methods. Fourteen abdominally obese, sedentary males with normal glucose tolerance (NGT; n = 7) and abnormal glucose tolerance (AGT; n = 7) completed 40 min of exercise bouts for 10 consecutive days at approximately 75% of age-predicted maximum heart rate. Fasting glucose and insulin levels, and glucose tolerance and insulin response to glucose were measured before and after the training period. Results. Participants did not experience significant mass loss during the 10-day investigation. Individuals in the AGT group experienced significant (P < 0.05) improvement in glucose tolerance [glucose area: 1,763.67 (255.98) mmol L-1 x 120 min(-1) vs. 1,682.98 (266.91) mmol L-1 x 120 min(-1)] and fasting insulin levels [44.57 (7.58) muU mL(-1) vs. 36.14 (3.97) muU mL(-1)] as a result of training. Significant (P < 0.05) reductions in fasting glucose concentrations [5.82 (0.19) mmol L-1 vs. 5.42 (0.18) mmol L-1] and a decrease in fasting insulin concentrations [44.71 (9.39) muU mL(-1) vs. 35.0 (7.15) muU mL(-1); P = 0.064] were observed in the NGT group following the training period. Conclusions. The data suggest that moderate, short-term exercise without concomitant mass loss is effective in improving glucose tolerance and insulin response to a glucose load in obese males with abnormal glucose tolerance. (C) 2004 The Institute For Cancer Prevention and Elsevier Inc. All rights reserved.

Journal Title

Preventive Medicine

Volume

38

Issue/Number

6

Publication Date

1-1-2004

Document Type

Article

Language

English

First Page

885

Last Page

888

WOS Identifier

WOS:000222115800026

ISSN

0091-7435

Share

COinS