Journal of Jiroft University of Medical Sciences

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Ahmadi H, Ghanbarzadeh M, Rangbar R, Nikbakht M. The effect of aerobic exercise on plasma vitamin D levels and glycemic control indicators in obese and overweight diabetic men. J Jiroft Univ Med Sci 2021; 8 (1) :563-573
URL: http://journal.jmu.ac.ir/article-1-477-en.html

Materials and Methods: From among males with type 2 diabetes, 24 patients with mean age (49.5±0.81 years) and BMI (29.6±1.3 kg/m²) were randomly divided into two groups including aerobic exercise (n=12) and control (12 people). The aerobic exercise program was performed for eight weeks with an intensity of 50 to 75% of the heart rate reserve. Levels of vitamin D, HbA1c, glucose, insulin, insulin resistance, insulin sensitivity and beta cell function were measured in the pretest and posttest. Dependent t-test and analysis of covariance were used for intragroup and intergroup comparison and Pearson correlation test was used for the measurement of variables relationship.
Results: The results showed that the percentage of HbA1c, glucose, insulin and insulin resistance in the aerobic exercise group had a significant decrease compared to the control group (p<0.05), However, vitamin D levels, insulin sensitivity and beta cell function in the aerobic exercise group increased significantly compared to the control group (p<0.05). In addition, the results of Pearson correlation test showed a significant relationship between vitamin D levels and glycemic control indicators in the aerobic exercise group (p<0.05).
Conclusion: In this study, it was observed that aerobic exercise is an effective strategy to improve glycemic control indicator in type 2 diabetic patients. This supportive effect is probably related to the development of plasma levels of vitamin D.