Abstract
Background: Diabetes Mellitus (DM) is a chronic disease that produces negative impact of exercise capacity. Exercise tolerance has been attributed to reduced cardiovascular performance in these patients. Objective: To evaluate the relationship between functional capacity and haemodynamic responses to maximal exercise in DM-II patients. Materials and Methods: 16 patients (49.4±6.2 years) of both sexes we evaluated. Peak stroke volume (SV), cardiac output (CO) and heart rate (HR) by cardioimpedance were measured. Pulmonary gas exchange breath-by-breath was measured during an incremental exercise testing on a cycle. Peak oxygen uptake (VO2), carbon dioxide production (VCO2), minute ventilation (VE), end tidal carbon dioxide tension (PetCO2) and VE/VCO2 were compared. Data analysis was used to test for normality Shapiro-Wilk test and Pearson correlation. Results: Significant and negative correlation was observed between SV with VE (r=-0.59), VCO2 (r=-0.53) and VO2/FC (r=-0.60). Conclusion: The results suggest that SV performance is related to exercise capacity in diabetic individuals. These changes would be the harbinger of reduced exercise capacity in diabetics.
Financial support: CNPq and FAPESP 2009/01842-0.
- © 2013 ERS