Features of adaptation to submaximal physical exercise capacity in conditions of iodine
Features of adaptation to submaximal physical exercise capacity in conditions of iodine deficiency
Doctor of biology, Professor A. D. tsikunib . Candidate of biological Sciences B. Dzhrivakh. S. R. Kajtmesova, Y. Diachenko, F. Eslu. Research
Institute of complex problems of Adyghe state University, Maikop
Key words: iodine deficiency, macro-and micronutrients, physical performance, utilization of lactate and adaptive capacity, IGST, the index of physical condition, somatic health, respiratory samples.
Introduction. High physical loads characteristic of modern sport, place special demands on the energy supply system of an athlete. Athletic performance depends on how effectively the athlete’s body will be able to mobilize and utilize energy substrates and how perfect will be established a system of regulation of these processes [2, 3]. In the adaptation of athletes to physical loads, including submaximal power, the priority traditionally given to the “pituitary–adrenal cortex”, while the role of other hormonal systems in the processes of adaptation to these stresses has not been studied. In particular this applies to the thyroid gland, a critical role in the regulation of energy metabolism in the body no doubt [1, 4]. The prerequisite of the normal functioning of the thyroid gland is an adequate provision of the body with iodine, deficiency of which is one of the most common nutritional deficiencies in the world, including in Russia and most of its regions [ 5, 7, 8].
In the aspect of the specified purpose of the study was to substantiate the physiological and biochemical mechanisms of influence on the iodine status of an athlete to adapt to physical stress submaximal capacity.
Methods and organization studies. The study of the structure and biological value of the diet of athletes conducted a questionnaire-survey method, analyzed 120 rations by 25 parameters. For research to study the effects of iodine deficiency on the dynamics of the utilization of lactate and physical performance on a voluntary basis were formed two groups of athletes: control group (CG) – 17 athletes with normal iodine content in the daily diet (135±17,0 mg/day) and urine (14,07±2,89 g%) and experimental group (EG) – 12 athletes with a low content of iodine in the diet (86±22,3 mg/day) and urine (5,95±1,66 g%). Quantitative determination of iodine in urine was performed cerium-arsenite method of lactic acid in the blood and urine – enzymatic method. Physical fitness of the athletes was assessed by the size of the adaptive capacity, the results of the Harvard step test, the index of physical condition, indicators of physical health, the results of the sample Rod (the delay time of the breath on the inhale) and samples genchi (the delay time of the breath on the exhale).
Conclusion. The results of physiological and biochemical studies allowed for the first time is insufficient to justify the provision of the body with iodine as a factor limiting physical performance in the area of submaximal capacity.
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