THE EFFECT OF WEIGHT LOSS DUE TO DEHYDRATION ON SELECTED PHYSIOLOGICAL VARIABLES AND PHYSICAL FITNESS OF WRESTLERS

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MOEENI S.Z.

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Journal: OLYMPIC Year:2000 | Volume:8 | Issue:3-4 (SERIAL 18) Page(s): 21-38

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Title

THE EFFECT OF WEIGHT LOSS DUE TO DEHYDRATION ON SELECTED PHYSIOLOGICAL VARIABLES AND PHYSICAL FITNESS OF WRESTLERS

Author(s)

MOEENI S.Z. | Issue Writer Certificate

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Abstract

Dehydration is commonly used by wrestlers to reduce weight quickly in order to compete in a lower weight class. Research findings have revealed that dehydration can results in decrement of physical work capacity in wrestlers. Therefore, the purpose of this study was to investigate the effects of 5% weight reduction by dehydration in elite wrestlers on selected physiological parameters (Maximal strength of flexors digitorum, whole body response time, and shoulder girdle muscular endurance), hematocrit, serum sodium and potassium concentration, and body weight change, 14 hours after rehydration, that is; the extent of weight gain by wrestlers between an evening weigh-in and the first round of wrestling the next morning (about 14hours). 30 elite higly trained volunteer wrestlers; aged 22 to 26 years old were randomly selected, and also randomly assigned into two groups as experimental and control groups. Quasi-experimental research design including experimental and control groups with pretest and post test was employed. Student's test for comparison between two independent mean for difference scores was used as statistical method. Research hypotheses were tested according to the level of significance P≤0/01. The comparison between two group means value of pretest and post test in all dependent variables showed that; 5% weight reduction by dehydration result in -significantly decrease in shoulder girdle muscular endurance, measured by pull-up, also mean response time in four-direction movement increase significantly by the effects of dehydration. Whereas, maximal strength of flexors digitorum, measured by hand-grip dynamometer, were not significantly decrease by dehydration. Blood analysis of subjects showed that; dehydration had no significant effect on serum potassium concentration, whereas, serum sodium concentration increased significantly, and also, percent of hematocrit were affected by dehydration and increased significantly. Finally, after 14 hours ad libitum rehydration, the normal weight of experimental subjects were significantly decreased. Therefore, it was concluded that typical wrestling weight loss technique, that is dehydration in sauna results in deleterious effects on muscular endurance, response Time and plasma volume.

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APA: Copy

MOEENI, S.Z.. (2000). THE EFFECT OF WEIGHT LOSS DUE TO DEHYDRATION ON SELECTED PHYSIOLOGICAL VARIABLES AND PHYSICAL FITNESS OF WRESTLERS. OLYMPIC, 8(3-4 (SERIAL 18)), 21-38. SID. https://sid.ir/paper/37611/en

Vancouver: Copy

MOEENI S.Z.. THE EFFECT OF WEIGHT LOSS DUE TO DEHYDRATION ON SELECTED PHYSIOLOGICAL VARIABLES AND PHYSICAL FITNESS OF WRESTLERS. OLYMPIC[Internet]. 2000;8(3-4 (SERIAL 18)):21-38. Available from: https://sid.ir/paper/37611/en

IEEE: Copy

S.Z. MOEENI, “THE EFFECT OF WEIGHT LOSS DUE TO DEHYDRATION ON SELECTED PHYSIOLOGICAL VARIABLES AND PHYSICAL FITNESS OF WRESTLERS,” OLYMPIC, vol. 8, no. 3-4 (SERIAL 18), pp. 21–38, 2000, [Online]. Available: https://sid.ir/paper/37611/en

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