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Research Journal of Biological Sciences
Year: 2011  |  Volume: 6  |  Issue: 11  |  Page No.: 627 - 631

Effect of Re-Substitution of Body Lost Liquids Consequent Dehydration on Heart Functional Indicators among Male Karate Experts in Tabriz

Asghar Zolfaghari, Bahman Tarverdizadeh and Amirparviz Rezaeisaber    

Abstract: Fluid intake and adequate hydration during exercise are essential and more importantly, critical during prolonged training sessions and competition events. Fluid intake maintains hydration and helps to maintain body temperature (thermoregulation), avoid dehydration and maintain adequate plasma volume. In order to investigate effects of liquids re-substitution on heart functional indicators among male club karate experts, 36 volunteer karate experts were randomly divided into two treatment and control groups. The treatment group after cardio screen testing (at 9 o’clock a.m.), sat in sauna from 1-3.5 p.m. and about 4-5% weight loss was experienced and the measurement were repeated. Further, the examinees until 7 a.m. of the next day were given the opportunity by using similar kinds of food and liquids to once again substitute the liquids and were again measured body’s acute dehydration except in the time of pre-injection stage, heart output, caused significant change in each one of the heart functional indicators (beating volume, time of left ventricle injection, cardiac frequency, mean arterial pressure, double product and weight) and all these changes at a rehydration interval of 14-16 h returned to its previous state (p<0.05). At the time interval between weighing and start of the first karate match, all changes resulting from dehydration are retrieved in heart function.

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