Document Details

Document Type : Article In Journal 
Document Title :
Heart Rate Variability in Obese Subjects in Response to Short-Term Exercise.
Heart Rate Variability in Obese Subjects in Response to Short-Term Exercise.
 
Document Language : English 
Abstract : Background: Heart rate variability (HRV), a marker used to evaluate the autonomic nervous system, has been used for many years due to the significant relationship common in developed countries and is associated with an increased risk of heart disease. Aim of the Work: Our objective was to evaluate the effect of short – term exercise, on the interaction of the ANS with the cardiovascular system in the obese subjects compared to the thin normal subjects. Subjects and Methods: The Effects of short-term exercise was investigated on 20 volunteers Saudi male students aged between 22-24 years old, at the Department of Physiology, Faculty of Medicine, King Abdul-Aziz University. The short-term exercise was done by asking all the students to jog up and down stairs from the 4th floor to the ground floor and back. HRV was measured before and after the physical exercise. Results: Our results demonstrated that, not only the high-frequency waves that indicates the vagal activity to the heart was decreased in the obese-subjects during the basal resting condition, but also the sympathetic activity in the obese-subjects was increased, as evident by the significant increase in the low-frequency waves compared to the thin-subjects group. Also, short-term exercise of the normal-subjects showed a significant tachycardia that was lost in the obese subjects indicating a significant decrease in the chronotropic reserve in the obese subjects. The chronotropic incompetence to exercise could be associated with a high risk for the coronary artery disease. Conclusion: Heart rate variability study of the short-term exercise can serve as a simple method for assessing the cardiac autonomic modulation on the cardiovascular response to exercise. 
ISSN : 0306-4522 
Journal Name : Scientific Medical Journal 
Volume : 21 
Issue Number : 2 
Publishing Year : 2009 AH
2009 AD 
Article Type : Article 
Added Date : Monday, March 15, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
خضر عبدالجليلAbdel Galil, Khidir ResearcherDoctorate 

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