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

    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