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Diabetes and Vascular Disease Research
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Exercise capacity is a predictor of cardiovascular events in patients with type 2 diabetes mellitus

Berhane Seyoum

Department of Medicine, University of Colorado Health Sciences Center, Denver, Colorado, US

Raymond O Estacio

Department of Medicine, University of Colorado Health Sciences Center, Denver, Colorado, US

Paulos Berhanu

Department of Medicine, University of Colorado Health Sciences Center, Denver, Colorado, US

Robert W. Schrier

Department of Medicine, University of Colorado Health Sciences Center, Denver, Colorado, US

Peak exercise oxygen consumption (peak VO2), as measured by expired gas analysis, is an accurate, reproducible and reliable method for determining exercise capacity. In this study, a cohort of 468 patients with type 2 diabetes underwent graded exercise testing to measure peak VO2 at baseline; the cohort was followed for five years for the occurrence of cardiovascular disease (CVD) events. Patients who developed CVD events during the five-year follow-up period were found to have significantly lower baseline peak VO2, as compared to those who did not (p=0.02). Analysis by gender showed that the mean peak VO2 in male patients who developed CVD events was significantly lower than the peak VO2 in those who did not (p<0.03). Multiple Cox regression analysis also showed low peak VO2 to be an independent factor.

In conclusion, patients with type 2 diabetes mellitus with reduced peak VO2 during exercise have a greater tendency to develop future CVD events.

Key Words: exercise • peak VO2 • diabetes mellitus • cardiovascular events

Diabetes and Vascular Disease Research, Vol. 3, No. 3, 197-201 (2006)
DOI: 10.3132/dvdr.2006.030
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