The role of obesity and cardiovascular fitness ln the impaired glucose tolerance of aging

被引:8
作者
Colman, E
Katzel, LI
Sorkin, J
Coon, PJ
Engelhardt, S
Rogus, E
Goldberg, AP
机构
[1] UNIV MARYLAND,SCH MED,DEPT MED,DIV GERONTOL,BALTIMORE,MD 21201
[2] VET AFFAIRS MED CTR,CTR GERIATR RES EDUC & CLIN,BALTIMORE,MD
[3] NIA,EPIDEMIOL DEMOG & BIOMETRY PROGRAM,BETHESDA,MD 20892
关键词
obesity; impaired glucose tolerance and aging;
D O I
10.1016/0531-5565(95)00015-1
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
The prevalence of impaired glucose tolerance (IGT) increases with aging. Although some data suggest that age is independently associated with IGT, other studies suggest that age-associated changes in body composition and reduced cardiovascular fitness are responsible for the development of IGT. We, therefore, examined the relationship of age, total and regional adiposity, and level of fitness (VO(2)max) to the presence of IGT in 155 healthy, nondiabetic, nonsmoking, older community dwelling men. Sixty-two of 155 men (40%) had IGT, while 93 men (60%) had normal glucose tolerance (WHO criteria). The subjects with IGT were of similar age (61.0 +/- 1.0 vs. 59.0 +/- 0.7 years, p = 0.49) and had the same maximal aerobic capacity, (VO(2)max) (42 0 +/- 1.0 vs. 44.0 +/- 0.8 mL/kg ffm/min, p = 0.42), but had a higher waist to hip ratio (WHR) (0.98 +/- 0.01 vs. 0.96 +/- 0.01, p = 0.005) and percent body fat (30.0 +/- 0.4 vs. 26.0 +/- 0.6, p = 0.004) than the men with normal glucose tolerance. In univariate analysis, the 2-h glucose level correlated positively with percent body fat (r = 0.30, p = 0.0002), WHR (0.24, p = 0.002), and age (r = 0.17, p = 0.03) and negatively with VO(2)max (r = -0.23, p = 0.005). In both multiple logistic and linear regression analyses, percent body fat was the only independent predictor of IGT (p = 0.002). These results suggest that the age-associated increase in total adiposity is a major contributor to the development of IGT in middle-aged and older men. Thus, lifestyle modifications that reduce body fat should reduce the risk for IGT and the development of noninsulin-dependent diabetes mellitus in the elderly.
引用
收藏
页码:571 / 580
页数:10
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