. Revista de Educaţie Fizică, Sport şi Ştiinte Conexe
THE EFFECTS OF HIGH INTENSITY TRAINING ON SALIVARY MARKERS OF THE SYMPATHETIC NERVOUS SYSTEM
10 decembrie 2018
High-intensity interval training (HIIT) is a type of exercise training characterized by brief, intermittent bursts of vigorous activity, interspersed with periods of low intensity activity. HIIT in a variety of forms is today one of the most effective means of improving cardio-respiratory and metabolic function. HIIT have a significantly impact on sympathetic nervous system (SNS). During these intensive trainings, there are a number of physiological changes on the SNS. The most important effect of HIIT is activation of the cardiovascular system. However, the effects of HIIT are very variable among individuals. One of the most non-invasive reliable methods of evaluating HIIT on SNS are dosing salivary markers. The saliva is a hypotonic fluid in relation to plasma, containing compounds produced in the salivary glands (immunoglobulin A and α-amylase) as well as compounds diffused in the plasma (water, electrolytes, proteins, metabolites and hormones). Its production and composition depend on the sympathetic and parasympathetic nervous system activity. Another strong SNS activator able to alter the concentrations of α-amylase in saliva is physical exercise. Several studies have demonstrated increases in the concentration of salivary α-amylase. Physical exercise of varying intensity and duration may change saliva ionic concentration. These changes may be credited to sympathetic stimulation, which induces changes in salivary flow, reabsorption and secretion of electrolytes in the secretory cells. This article explains the effects of HIIT on SNS and the possible mechanisms underlying its positive effect. Furthermore, dosing salivary markers can be used as a diagnostic tool in sports medicine and understanding the impact of HIIT on health. This will play a role in developing appropriate physical exercise and exercise guidelines.
04-2-2018 - DRUICA, ANTON-PADURARU, MOCANU.pdf
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