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Effects of aerobic exercise on selected physiological parameters and quality of life in patients with type 2 diabetes mellitus

Authors Bello A, Emannuel BO, Adegoke B, Adjei DN

Published 26 October 2011 Volume 2011:4 Pages 723—727

DOI https://doi.org/10.2147/IJGM.S16717

Review by Single-blind

Peer reviewer comments 2

Ajediran I Bello1, Emmanuel Owusu-Boakye1, Babatunde OA Adegoke2, David N Adjei3
1Department of Physiotherapy, School of Allied Health Sciences, College of Health Sciences, Accra, University of Ghana, Accra, Ghana; 2Department of Physiotherapy, College of Medicine, University of Ibadan, Ibadan, Nigeria; 3Department of Medical Laboratory Sciences, School of Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana

Background: The aim of this study was to evaluate the effects of an 8-week aerobic exercise program on physiological parameters and quality of life in patients with type 2 diabetes mellitus.
Methods: Patients attending a diabetes clinic participated in this randomized control trial. They were randomly assigned to an intervention or control group by ballot. The intervention group, in addition to regular conventional treatment, received individually prescribed aerobic exercise for 30 minutes, at 50%–75% of maximum heart rate three times weekly. Main outcome measures included fasting blood sugar, glycosylated hemoglobin (HbA1c), high-density lipoprotein, low-density lipoprotein, and a World Health Organization quality of life questionnaire (WHOQoL-BREF). Data analysis involved paired and unpaired t-tests and mixed-design two-way analysis of variance.
Results: Eighteen patients with type 2 diabetes and of mean age 46.22 ± 9.79 years participated in the study. Mean duration since onset of diabetes in the intervention and control groups was 4.44 ± 3.33 years and 3.92 ± 2.66 years, respectively. Both groups were similar for duration since onset, baseline physiological parameters, and quality of life. Within-group comparison did not show any significant differences (P > 0.05) for HbA1c, fasting blood sugar, low-density lipoprotein, or high-density lipoprotein. The intervention group improved significantly (P < 0.05) in their postexercise quality of life compared with baseline. Between-group comparison did not show any significant differences in physiological parameters or quality of life.
Conclusion: Patients with type 2 diabetes improved in fasting blood sugar, low-density lipoprotein, high-density lipoprotein, and quality of life following 8 weeks of aerobic exercise training. These perceived improvements were not reflected by statistically significant differences in between-group comparison for any parameters.

Keywords: type 2 diabetes mellitus, aerobic exercise, physiological parameters, quality of life

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