Geometric and linear indices of heart rate variability during an exercise with flexible pole
semanticscholar(2016)
Abstract
Specific changes are necessary to maintain cardiac system homeostasis during exercise activity. Those responses are promoted by the action of the autonomic nervous system on the heart [1]. The usual cardiac autonomic reaction to exercise presents abrupt parasympathetic withdrawal during the beginning of exercise leading to heart rate increase and following increase in the sympathetic nervous system activity. After exercise cessation heart rate reduces due to the vagal reactivation mechanism [2]. Cardiac autonomic regulation can be evaluated through heart rate variability (HRV) is a well recognized non-invasive method. HRV evaluates the oscillations in the intervals between consecutive heart beats (RR intervals) that are associated with the influences of the autonomic nervous system on the sinus node [3]. Alterations in HRV after exercise are featured by reduced vagal tone and global variability of HRV and progressive increase in HRV [4]. GEOMETRIC AND LINEAR INDICES OF HEART RATE VARIABILITY DURING AN EXERCISE WITH FLEXIBLE POLE
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