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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Physiol. | doi: 10.3389/fphys.2019.01043

Comparison of baroreflex sensitivity and cardiac autonomic function between adolescent athlete and non-athlete boys – A cross sectional study

 Senthil K. Subramanian1,  Vivek K. Sharma2*, Vinayathan Arunachalam3,  Rajathi Rajendran4 and Archana Gaur5
  • 1Department of Physiology, All India Institute of Medical Sciences, Mangalagiri, India
  • 2Department of Physiology, Government Institute of Medical Sciences, India
  • 3Jawahar Navodaya Vidyalaya, Periyakalapet, India
  • 4Department of Physiology, Jawaharlal Institute of Postgraduate Medical Education and Research, India
  • 5Department of Physiology, Chengalpattu Medical College, India

Introduction: It is well-known that regular physical activity improves cardiovascular health, and higher baroreflex sensitivity and heart rate variability is associated with cardiovascular health. Adolescence is the age group when behaviour is easily modified; early intervention at this stage in terms of physical conditioning or training prevents future cardiovascular risk. Hence, we conceived the present study to assess and compare the baroreflex sensitivity and autonomic function between adolescent athletes and non-athletes.
Methods: We recruited school going athletes (n=30) and non-athlete boys (n=30) in 10-19 age group after obtaining their assent and consent from their parents. We assessed height, weight, heart rate, blood pressure, baroreflex sensitivity and cardiac autonomic function. Comparison between groups was made using the unpaired t-test for height, weight, body mass Index, heart rate, blood pressure and baroreflex sensitivity, and using Mann Whitney U test for cardiac autonomic function parameters.
Results: There was a trend for higher baroreflex sensitivity in athletes. Heart rate variability (total power and SDNN) was higher in athletes. The parasympathetic tone was higher in terms of higher RMSSD, and higher HF power. Parasympathetic reactivity was higher in athletes in terms of higher 30:15 ratio and EI ratio.
Conclusion: Athletic level physical conditioning has a positive influence on baroreflex function and autonomic function that may prove beneficial to the adolescents' cardiovascular health.

Keywords: BRS, baroreceptor reflex sensitivity, HRV (heart rate variability), Athletes, autonomic function assessment, Adolescent boys

Received: 21 Feb 2019; Accepted: 30 Jul 2019.

Edited by:

Elisabeth Lambert, Swinburne University of Technology, Australia

Reviewed by:

Raquel Bailón, University of Zaragoza, Spain
Franciele M. Vanderlei, São Paulo State University, Brazil  

Copyright: © 2019 Subramanian, Sharma, Arunachalam, Rajendran and Gaur. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Vivek K. Sharma, Department of Physiology, Government Institute of Medical Sciences, Greater Noida, India, drvivekhod@gmail.com