academic journalism

Heart Rate Variability Following Eight Week Progressive Physical Training in Nonathlete Young Males


avatar Saman Pashaei 1 , avatar Hojatollah Nikbakht 1 , * , avatar Nader Shakeri 1

1 Department of Exercise Physiology, Faculty of Humanities and Social Sciences, Islamic Azad University, Sciences and Research Branch, Tehran, Iran

How to Cite: Pashaei S , Nikbakht H, Shakeri N . Heart Rate Variability Following Eight Week Progressive Physical Training in Nonathlete Young Males. J Clin Res Paramed Sci. 2017;6(2):e81252.


Journal of Clinical Research in Paramedical Sciences: 6 (2); e81252
Published Online: July 24, 2017
Article Type: Research Article
Received: November 20, 2016
Accepted: May 03, 2017


Introduction: Heart signal changes during two consecutive beats are called Heart Rate Variability which is considered as a reliable indicator of the heart’s health. The relationship between Heart rate variability and physical training has not been clearly identified to date. This research examined the effect of physical training on heart rate variability in nonathlete young males.
Methods: Twenty four nonathlete young males with a mean age of 21.25± 1.43 were selected and randomly divided into a physical training group (n = 12) and a control group (n = 12). The experimental group completed physical training sessions for eight weeks – three sessions each weak - with an intensity of up to 60% of the heart rate reserve. However, the control group did not participate in any intervention. The heart rate variability of the subjects before and after the training protocol was measured. Then, the covariance analysis and paired t-test were utilized to analyze the data.
Results: The results indicated that after physical training, sympathetic activity decreased and heart rate variability significantly increased (P ≤ 0.05) while there was not a significant difference in control group. (P ≥ 0.05)
Conclusion: It seems that physical training can cause heart rate variability decrease in nonathlete young males.


The full text of this article is available on PDF.


  • 1.

    The References of this article is available on PDF.

© 2017, Journal of Clinical Research in Paramedical Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License ( which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.