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COMPA RISON OF THE PHYSIOLOGICAL INDICES AND PHYSICAL LOAD RESPONSES IN CROSS-COUNTRY SKIERS AND TAE KWONDO PRACTITIONERS

SOLONIN YU. G. (1), BOYKO E. R. (1,2), MARKOV A. L. (1), VARLAMOVA N. G. (1), GARNOV I. O. (1), LOGINOVA T. P. (1), MARTYNOV N. A. (1), CHERNYKH A. A. (1) 1 -INSTITUTE OF PHYSIOLOGY OF KOMI SCIENCE CENTER OF THE URAL BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES, SYKTYVKAR, RUSSIA 2 -SYKTYVKAR STATE UNIVERSITY, SYKTYVKAR, RUSSIA

Objective: the comparison of physiological indices in cross-country skiers and taekwondo practitioners at rest and under physical load. Materials and methods: cross-country skiers and taekwondo practitioners were examined in the laboratory with the «Oxycon Pro» system. Respiratory and cardiovascular systems indices at rest and under physical load were investigated.
Results: cross-country skiers who focus on endurance training shower increased lung vital capacity and vital index values, increased Skibinskaya index and maximal oxygen consumption that indicate increased cardiorespiratory system performance capabilities. At the same time they were found to have decreased heart rate and rate pressure product at rest and under physical load that indicate increased performance of cardiovascular and respiratory systems. Taekwondo practitioners due to features of their training were found to have higher body mass index in comparison with cross country skiers, and higher power and power index, higher «pulse cost» and «pressure cost» under physical load.
Conclusions: monitoring of the cardiorespiratory indices during exercise tests with high (150 W and more) physical load identifies physiological features affecting various performance components in athletes.
Keywords: 
cross country skiers; taekwondo practitioners; morphological and functional indices; respiration and circulation indices; physical load response; aerobic threshold.