Efeito de uma única interrupção do comportamento sedentário na glicemia pós-prandial em indivíduos com diabetes mellitus tipo 2

Abstract

The aim of this study was to analyze the effect of a single interruption of sedentary behavior with light physical activity on postprandial blood glucose in subjects with DM2. Sixteen physically active and inactive elderly participated in the study (61.9 ± 9.6). All of them had a sitting session (SITTING), and two others with interruptions of 10 (STANDING-10) and 20 minutes (STANDING-20) standing, after eating the standardized meal. Glucose and blood pressure levels were measured during fasting, 45, 60, 75, 90 and 120 minutes after the standardized meal. The normality of the data was tested by the shapiro-wilk test. Descriptive statistics was used to characterize the sample. The area under the glycemia curve was calculated. To test for a possible difference between conditions, the dependent t test was applied. P <0.05 was assumed. There was no difference in AUCi of blood glucose (p = 0.557) between SITTING (54.3 mg / dL / 2h; 95% CI 46.4, 62.1), STANDING-10 (49.5 mg / dL / 2h; 95% CI 41.6, 57.3) and STANDING-20 (55.1 mg / dL / 2h; 95% CI 47.3, 63.0). The glycemia peak was not different (p = 0.407) between the SITTING sessions (89.1 mg / dL; 95% CI 77.5, 100.6), STANDING-10 (80.5 mg / dL; 95 CI % 68.9, 92.1) and STANDING-20 (91.1 mg / dL; 95% CI 79.5, 102.7). The punctual interruption of 10 or 20 minutes in sitting time by standing up does not seem to be sufficient to attenuate postprandial glycemia in individuals with DM2.