Resumo

INTRODUCTION: The type 2 diabetes mellitus (T2D) is a chronic disease characterized by a continuous and/or intermittent hyperglycemic state. The hyperglycemic state have impacted on the diminution of the R-R intervals (RRi) of the heart rate variability (HRV) and therefore have damaged the cardiac autonomic function assessed by parasympathetic and sympathetic indicators. Although the literature has highlighted the relationship between the levels of blood glucose and autonomic nervous system indicators, so far it is not known about that association during a period of 24 hours of the routine of patients with T2D, particularly, testing the correlation in different conditions of resistance exercise (RE). 

RESULTS: Correlations (p<0.01) were found between glucose and RRi, LF, HF and LF:HF for the CON40% (r= -0.60, r= 0.38, r= -0.38, r= 0.29, respectively) and CON80%1RM (r= -0.50, r= 0.28, r= -0.28, r= 0.29, respectively). To the 40%1RM were found correlations between glucose and RRi (r= -0.35; p<0.001) and to the 80%1RM between glucose and RRi, LF, HF (r= -0.15, r= 0.18, r= -0.18; p<0.05, respectively). Differences between glucose and RRi correlations occurred (CON40%-80% vs. 40%-80%1RM; p<0.001). CONCLUSION: The RE attenuates the correlation between glucose and RRi during 24h. Besides, low intensity RE session provides the extinction of the correlation between glucose and HRV indicators in women with T2D. 

AIM: To investigate the relationship between glucose and HRV during 24h after different RE intensities in women with T2D.

MATERIALS AND METHODS: Twelve women with T2D (55.2±4.0 years; 70.1±11.4 kg; 155.7±3.3 cm) performed experimental sessions divided in two blocks separated by seven days and in a randomized order: block-A (session 1: control – CON40% and session 2: RE at 40% of the one repetition maximum test – 1RM) and block-B (session 3: CON80% and session 4: RE at 80%1RM). The glucose and RRi of HRV were evaluated during 24h every 5min of each experimental session by, respectively, continuous glucose monitoring system (Guardian/REAL-Time) and cardiofrequencimeter Polar/RS800CX, which generated 288 measurement points for correlation.Pearson’s correlation (software SPSS v. 22.0) was performed among glucose and RRi values, low frequency (LF), high frequency (HF) and LF:HF ratio

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