Sodium and potassium blood level variations in track-and-field athletes and weightlifters under specific loads

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Dr.Biol., Professor R.V. Tambovtseva1
I.A. Nikulina1
1Russian State University of Physical Education, Sport, Youth and Tourism (GTSOLIFK), Moscow

Objective of the study was to profile the skills- and load-specific sodium and potassium blood level variations in track-and-field athletes and weightlifters under step loads variations. The trainees were subject to laboratory tests by submaximal step loads, with the load stepped from 1W per kilo of body weight in the first step by the same load in every next 3-min step. The sodium and potassium levels were tested using atomic emission spectroscopy (flame photometry). It was found that the sodium and potassium blood level variations prior to and after the step load test are contradictory. The processed test data showed quite wide individual variations in every of the three test groups. Having rated the mineral-corticoid function of adrenal cortex versus the sodium and potassium blood level variations, we found a few skills- and sport-specific variations in the test data obtained by the submaximal cycle ergometer exercise test.

Keywords: sodium, potassium, track-and-field athletes, weightlifters, blood, mineral-corticoid function of adrenal cortex.

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