期刊
DIABETES CARE
卷 30, 期 6, 页码 1539-1543出版社
AMER DIABETES ASSOC
DOI: 10.2337/dc06-2397
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资金
- RRD VA [IK6 RX002477] Funding Source: Medline
OBJECTIVE - To demonstrate the relation of exercise capacity and BMI to mortality in a population of mate veterans with type 2 diabetes. RESEARCH DESIGN AND METHODS - After excluding two under-weight patients (BMI <18.5 kg/m(2)), the study population comprised 831 consecutive patients with type 2 diabetes (mean age 61 - 9 years) referred for exercise testing for clinical reasons between 1995 and 2006. Exercise capacity was determined from a maximal exercise test and measured in metabolic equivalents (METs). Patients were classified both according to BMI category (18.5-24.9, 25.0-29.9, and >= 30 kg/m(2)) and by exercise capacity (<5.0 or >= 5.0 maximal METs). The association among exercise capacity, BMI, other clinical variables, and all-cause mortality was assessed by Cox proportiovial hazards. Study participants were followed for mortality up to 30 June 2006. RESULTS - During a mean follow-up of 4.8 +/- 3.0 years, 112 patients died, for an average annual mortality rate of 2.2%. Each 1-MET increase in exercise capacity conferred a 10% survival benefit (hazard ratio 0.90 [95% CI 0.82-0.98]; P = 0.01), but BMI was not significantly associated with mortality. After adjustment for age, ethnicity, examination year, BMI, presence of cardiovascular disease (CVD), and CVD risk factors, diabetic patients achieving <5 maxima, I METs were 70% more likely to die (1.70 [1.13-2.54]) than those achieving 5 maximal METs. CONCLUSIONS - There was a strong inverse association between exercise capacity and mortality in this cohort of men with documented diabetes, and this relationship was independent of BMI.
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