Document Detail

Effect of supervised integrated exercise on heart rate variability in type 2 diabetes mellitus.
MedLine Citation:
PMID:  17530559     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Heart rate variability (HRV) reflects autonomic nervous system modulation of cardiac activity. There is a relationship between degrees of physical activity, HRV changes and the risk of cardiovascular disease. AIM: To study the effect of a supervised integrated exercise programme on HRV in type 2 diabetes mellitus (DM). METHODS: The study group consisted of 48 patients (27 males, mean age 62+/-7 years) with type 2 diabetes, of whom 28 underwent a special exercise programme whereas the remaining 20 did not and served as the control group. The supervised integrated exercise programme was applied for a period of 9 months. Deep breathing time domain HRV (difference between the shortest and the longest R-R interval over one minute) was measured at baseline and after 3, 6 and 9 months. RESULTS: A significant improvement in the HRV values was observed with increasing duration of exercise (13.03+/-1.08 beats/min at baseline versus 16.5+/-1.11 beats/min at 9 months, p <0.001) whereas HRV decreased in the control group (14.85+/-1.15 beats/min at baseline vs. 14.30+/-1.75 at 9 months, p <0.05). Favourable changes in HRV in the exercise group were gender-dependent and were significant in males (12.4+/-1.76 beats/min at baseline vs. 16.18+/-1.91 at 9 months, p <0.001) whereas in females only a trend towards HRV improvement was observed. The HRV changes were also age-dependent and were more pronounced in younger patients than in the elderly. The metabolic parameters of diabetes control (blood glucose and glycosylated haemoglobin levels) significantly improved in the exercise group and significantly worsened in the control group. CONCLUSIONS: Regular supervised integrated exercise significantly improves HRV in patients with type 2 DM, which may favourably influence their long-term prognosis.
Shreedhar Bhagyalakshmi; Haleagrahara Nagaraja; Bangra Anupama; Bhat Ramesh; Adhikari Prabha; Murthy Niranjan; Avabratha Shreedhara
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Kardiologia polska     Volume:  65     ISSN:  0022-9032     ISO Abbreviation:  Kardiol Pol     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-05-28     Completed Date:  2007-08-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376352     Medline TA:  Kardiol Pol     Country:  Poland    
Other Details:
Languages:  eng     Pagination:  363-8; discussion 369     Citation Subset:  IM    
Department of Physiology, Kasturba Medical College, Mangalore, India.
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MeSH Terms
Autonomic Nervous System / physiopathology
Case-Control Studies
Diabetes Mellitus, Type 2 / physiopathology*,  therapy
Exercise Therapy
Heart Rate / physiology*
Middle Aged

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