The Effect of Aerobic Exercise on Cardiac Autonomic Nervous System Using Poincare's Geometric Method

Document Type : Research Paper

Authors

Department of Physical Education and Sports Sciences, Faculty of Educational Sciences, Mohaghegh Ardabili University, Ardabil, Iran

Abstract

Background and Purpose: Nonlinear dynamic geometric methods of heart rate variability over linear methods such as time and frequency-domain provides valuable information about the response of the cardiac autonomic system. The aim of this study was to investigate the effect of a consecutive course of aerobic exercise on heart rate variability using a nonlinear method with the possibility of repeating similar sequences of heart rate in young college men.
Methodology: 28 young college men were randomly divided into research groups (control group; aerobic exercise group). In the pre-test period and after the aerobic exercise intervention, all parameters of heart rate variability were measured by time-domain method and heart rate sequences. The standard deviation of the recorded sequences was then interpreted using the Poincare plot method. In order to compare the differences in the research stages, independent and paired t-tests were used.
Results: Immediate interval standard deviation of heart rate variability (SD1) increased significantly compare to the control group (p = 0.01) and pretest (p = 0.01) and continuous interval standard deviation of heart rate variable (SD2) increased significantly compared to the control group (p = 0.01) and pre-test (p = 0.02). After conversion to normal, SD1n compared to the control group (p = 0.02) increased significantly and There was a non-significance increases compared to the pre-test (p = 0.08), SD2n had a significant increase compared to the control group (p = 0.04) and a significant increase compared to the pre-test (p = 0.02). Comparing the ratio of the instantaneous standard deviation to the continuous standard deviation (SD1 / SD2) with respect to the control and pretest groups did not show a significant difference (p≥0.05).
Conclusion: Regular and continuous performance of moderate-intensity aerobic exercise improves cardiac neuroresponsibility in young college men.

Keywords


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