Respostas agudas e crônicas do exercício em ergômetro de braço na glicemia de pacientes com diabetes tipo-2

Abstract

The purpose of the study was to verify the chronic effect of arm ergometer training on the glycemia in type 2 diabetics (T2DM) and to analyze the effect of acute exercise on post-exercise glycemia during a month of training. Ten individuals with T2DM for 12.7±9,8 years (six men and four women; 60.8±8.8 years; 70.9±12.8kg.) were submitted to cardiovascular evaluation, filling out a health history, anthropometric evaluation, right (RAC) and left (LAC) arm circumference and pre and post a four- week training incremental tests (IT1/PRÉ-T and IT2/PÓS-T), starting with an exercise load of 0kp at 60 RPM and with increments of 0.1Kp at each three minute stage. After IT1, the volunteers trained twice a week, with did two weekly sections of 20 min of exercise at intensity between 75 and 79% of the maximum heart rate frequency predicted for the age. There was no significant difference (p=0.52) between the glycemia response PRÉ-T (160±93mg.dL-1) and POST-T (187±64mg.dL-1). When analyzing the delta variation of glycemia at the POST-T condition, a significant reduction (p=0.02) was verified during 60 min of recovery for IT2 when compared to the pre-IT2 (POS-T -14%), but this was not observed on the PRE-T (-6%). During the four weeks (eight sessions) of training, a significant mean decrease (p<0.01) of glycemia from 160mg.dL-1 to 126mg.dL-1 was observed. The BMI (body mass index) 3 had a significant reduction (p<0.05), (PRE-T – 27.3 kg.m2 (-1) POST-T – 26.8 kg.m2 (-1)) after four weeks of training, and the arm circumference increased significantly (RAC PRE-T/POS-T 30.0/31.9 and LAC 29.4/31.3cm). We can conclude that the four-week training in a arm ergometer induced a significant decrease of the glycemia during the 60min post-IT2 recovery as well as a significant decrease of the glycemia after the eight sections of training in relation to rest. In addition, the arm ergometer exercise during four weeks resulted in a significant increase of the RAC and LAC and significantly reduced BMI in patients with DM2.