Physiological and immune system responses followed by altering hydration status and arm cranking in wrestlers

Although exercise training induces significant physiologic variations in immune system, the effect of environmental and physical stress in hot environment and subsequent altering hydration status on some of the physiological and humoral immune system indices is not that much clear. The aim of this study was to investigate physiological and immune system responses followed by altering hydration status in Greco-Romance wrestlers. 14 healthy young men were assigned to experimental and control groups randomly. The experimental group lost 3-4% of their body weight in dry sauna through 10-min intermittence. Urine and blood samples were taken in three stages, before, immediately and after 18 hr of sauna. Arm cranking test in a 6 min high intensity program with 8×15s intervals at maximum work load and 30 s active recoveries followed by each high intensity bout in all 3 trials was given. Result showed significant increase in Leucocytes-, lymphocyte-, monocyte-, neutrophil-counting at dehydration trial in the experimental group. Haemoglobin counting in theexperimental group increased and decreased 5 and 7 percent followed by dehydration and rehydration successively. Hematocrit increased 2.74% by dehydration and decreased 2.24% by rehydration. Fibrinogen increased significantly after dehydration compared to the control group.Discussion and loss of body weight through sauna and exercise training in hot and humid environment can induce unfavorable variation in physiologic and humoral immune system indices and can affect people's health. Hence, rehydration is essentially recommend to all people who are enjoying exercise training in order to favor its health effects.