Evaluation of anaerobic threshold by heart rate variability in type 2 diabetics

Abstract

INTRODUCTION: Diabetes is a public health problem due to its high prevalence, morbidity and mortality. Type 2 is more prevalent and accounts for 90 to 95% of cases, with the most common complications being the accumulation of fat in skeletal muscle and insulin resistance. Regular physical exercise contributes to glycemic regulation, highlighting the anaerobic threshold as an important marker for prescribing physical exercises. OBJECTIVE: To assess the anaerobic threshold of individuals with type 2 diabetes through heart rate variability. MATERIALS AND METHODS: A cross-sectional study, recruited 18 participants of both sexes in a basic health unit in the municipality of Lagarto-SE, which were divided into 2 groups of 9 individuals. In the statistical analysis, the Shapiro-Wilk test was used to assess normality and subsequently Anova with Tukey's post-test to compare the groups. Group 1 consisted of type 2 diabetic individuals and group 2 of healthy individuals. The mean heart rate at rest and after the progressive exercise test was also evaluated. RESULTS: Age characteristics were homogeneous, with group 1 averaging 62.1 years (± 13.9) and group 2 62.0 years (± 7.0). The mean resting frequency was 79.8 bpm in the diabetic group and 78 bpm in the comparison group, at the anaerobic threshold it was 111.5 in group 1 and 119 in group 2. The time to reach the LA was similar between groups , 9.5 min in the experimental group and 8 min in the comparison group. CONCLUSION: The values of the anaerobic threshold of both groups were considered of low physical conditioning, these did not present statistical difference.