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Asian J Kinesiol > Volume 15(2); 2013 > Article
The Official Journal of the Korean Academy of Kinesiology 2013;15(2):47-60.
DOI: https://doi.org/10.15758/jkak.2013.15.2.47     Published online April 30, 2013.
Sports Activities and Activity of Autonomic Nervous System in Cardiac Rhythm
Sang-Hyup Song, Hyuek-Jong Lee, Ho-Seong Lee
Dankook University
Cornell University
Correspondence:  Ho-Seong Lee,
Email: hoseh28@dankook.ac.kr
Received: 12 March 2013   • Accepted: 20 April 2013

The purpose of this paper is to review the function of autonomic nervous system on cardiac rhythm, the relationship between endurance training and cardiac autonomic nervous system, and chronobiologic studies in heart functions.
Data collected by keywords that cardiac autonomic nervous system, the evaluation of the cardiac autonomic nervous system activity, cardiac autonomic nervous system activity and endurance training, and chronobiologic studies in heart functions.
To evaluate cardiac parasympathetic nervous activity, the time-domain and frequency area is used for the analysis of the chronotropismus, and these analysis are evaluates electric stability in cardiac rhythm. It is generally assumed that heart rate is increased during exercise and is decreased following exercise. These changes are regulated by cardiac autonomic nervous system activity. Recently, it is reported that parasympathetic activity is higher in endurance athletes, and endurance training improves parasympathetic activity and also increases cardiac electric stability in patients such as hypertension, diabetes, and myocardial infarction . Therefore, it is possible that the autonomic nervous system activity reflects body fatigue state and could be an index of athletes conditioning. However, more researches are needed to confirm the detraining effects on these studies in healthy subjects Moreover, reexcitability on the parasympathetic activity may be improved by exercise training. In particular, it is necessary to investigate the relationship between circadian rhythm and exercise.
this study confirms that sports activities may closely be related with the autonomic nervous system activity in heart. Further studies for the mechanism of exercise response on cardiac autonomic nervous system activity would be necessary in the future.
Keywords: Sports Activity, Autonomic Nervous System Activity, Endurance Training, Chronobiology
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