Power Spectral Analysis of Heart Rate Variability in Adolescent Male Athletes.
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Date
2009-12
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Abstract
Background: Cardiac autonomic nervous activities (CANA) deteriorate with age, obesity, sedentary life
style and in various cardiac and noncardiac disease conditions. Regular physical exercise may improve
CANA in health and diseases. Power spectral analysis (PSA) of Heart rate variability (HRV) is one of the
most promising newer techniques to quantify CANA. Objective: To analyze HRV by Power Spectral
method in order to find out the influence of regular physical exercise on CANA in male adolescent athletes.
Method: This cross sectional study was carried out on 62 adolescent male athletes aged 12-18 years (group
B), in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University from 1st July 2007 to
30th June 2008. For comparison, 30 age, sex, BMI and socioeconomic condition matched apparently healthy
sedentary subjects (group A) were also studied. The study subjects were selected from the BKSP
(Bangladesh Krira Shikka Prothistan, Savar, Dhaka) and the control from a residential school of Dhaka
city.Power spectral measures of HRV including Total Power (TP), Very Low Frequency Power (VLF) Low
Frequency(LF), High Frequency (HF) LF/HF were measured by a Polygraph . For statistical analysis,
Idependent-Sample t-test was used. Results: Total power, HFnu power and the VLF,LF,HF were significantly
(P<0.001) higher and LFnu power and the LF/HF ratio were significantly (P<0.001) lower in athletes than
those of nonathletes which indicate higher cardiac parasympathetic and lower sympathetic activity in
athletes. Conclusion: Cardiac Autonomic regulation with increased parasympathetic and decreased
sympathetic modulation may occur with in athletes engaged with regular physical exercise.
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Keywords
Power Spectral Analysis (PSA), CANA, CANA, Athelet, Adolescent
Citation
Alom M, Begum N, Ferdousi S, Begum S, Ali T. Power Spectral Analysis of Heart Rate Variability in Adolescent Male Athletes. Journal of Bangladesh Society of Physiologists. 2009 Dec; 4(2): 26-33.