Abstract
Determining the maladaptation and adaptive capabilities of the body, in particular the cardiovascular system of volleyball player is currently advanced in sports medicine. The aim of the work is to establish correlations between cardiointervalographic indicators and parameters of external body structure in volleyball players of mesomorphic somatotype of juvenile age. The study involved 24 volleyball players aged 17 to 21 with a high level of sportsmanship and more than 3 years of experience. We conducted a study of heart rate variability on the cardiac computer diagnostic complex "OPTW" according to the recommendations of the European and North American Cardiac Association (1996). Indicators of autonomic homeostasis according to Baevsky, variation pulsometry, statistical and spectral cardiointervalographic parameters were determined. Anthropometry was performed by the method of Bunak (1941), somatotypological study – by the calculated modification of the method of Heath-Carter (1990), determination of the component composition of body weight by the method of Matejko (1992), correlation analysis by the method of Spearman was performed in the package "STATISTICA 5.5". Mesomorphic volleyball players were found to have the highest number and strength of reliable correlations with anthropo-somatotypological parameters, most of which were inverse and medium strength. Statistical, spectral parameters of heart rate variability and indicators of autonomic homeostasis with indicators of external body structure had few significant correlations. The girth of the hand in mesomorphic constitution volleyball players was statistically significantly related to the value of all statistical parameters and indicators of autonomic homeostasis by the method of Baevsky. According to the results of correlation analysis, we can assume that in volleyball players of mesomorphic somatotype with increasing the size of the mesomorphic component of somatotype, longitudinal, circumferential sizes and diameters of chest, arm, leg, neck will increase the impact on heart rate variability of the parasympathetic autonomic system.
Highlights
One of the most developed sports is volleyball
After correlation analysis have been done, it was found that most indicators of variation heart rate with anthropometric body parameters in mesomorphic somatotype volleyball players had a small number of medium and strong reliable correlations
It was found that the mode had fewer reliable direct correlations (only with the height of the trochanteric point (r=0.40, p=0.050), folds on the thigh (r=0.41, p=0.048) and on the crus (r=0.68, p=0.001)) and a greater number of inverse correlations of medium and strong force, in particular: with the width of the distal epiphysis of the thigh (r=-0.40, p=0.050), the girth of the shoulder in a relaxed state (r=-0.62, p=0.001), neck (r=0.55, p=0.006), chest on exhalation (r=-0.52, p=0.010), chest at rest (r=-0.41, p=0.048), transverse mid-chest diameter (r=-0.43, p=0.037), anterior-posterior mid-thoracic diameter (r=-0.72, p=0.001), thickness of skin and fat folds on the chest (r=-0.41, p=0.049), mesomorphic component of the somatotype (r=-0.49, p=0.015)
Summary
One of the most developed sports is volleyball. Almost every country has more than one volleyball team, which is constantly trying to reach the championship of the world's leading teams [1, 6, 7]. Coaches of volleyball teams make a titanic effort every day to achieve prizes and are forced to develop and improve the training regime of their teams [2, 14, 15, 16, 17]. Common in scientific articles and studies on the physiology of athletes is such a non-invasive method of examination as cardiointervalography [7, 8, 12] This technique allows you to quickly and clearly show the adaptive picture of each athlete [3]. Printed literature, which describes this technique for determining heart rate variability, is not numerous among volleyball players [18, 23, 24], and especially little
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