| Summary: | 碩士 === 聖約翰科技大學 === 工業工程與管理系碩士在職專班 === 100 === Purpose: To investigate the effect of a single regime of rapid weight loss achieved through dehydration in a hot environment on renal functions, electrolyte balance and Judo-specific skill-domain performance amongst adolescent Judo athletes. Method: 16 male adolescent Judo athletes were recruited for the study (average age 14.87±0.88 years, height 166.18±5.75cm, and weight 55.86±5.39 kg). Participants underwent a single treatment of steam bath induced rapid weight loss for 1.5 hours. Patient renal function, electrolyte balance and Judo domain-specific performance were observed pre- and post-treatment, and during a recovery period. Statistical methods used included one way-ANOVA and paired sample T-test. Results were considered to be statistically significance at p=0.05. Results: 1.In part of the renal function, the subjects after a single rapid weight loss before and after heat treatment, blood urea nitrogen 13.40 Rose 15.13mg/dl Recovery continues to rise (15.61mg/dl) ; creatinine .79 Rose .89 mg/dl And recovery is down slightly (.85mg/dl) , And uric acid 6.00 Rose 6.38mg/dl And recovery period also fell slightly (6.28mg/dl) And reaches significant levels (p<.05) .2. In part of the serum electrolyte, sodium ion concentration by 140.75 fell to 138.25mmol/L, recovery rebounded moderately (139.87mmol/L), and chloride ion concentration by 100.56 Dropped to 98.62mmol/L, also rebounded slightly in recovery period (99.93mmol/L); concentration of potassium ions from 4.44 rises to 4.91mmol/L And recovery period also fell slightly (4.73mmol/L), and reaches significant levels (p<.05).3.In Judo, and standing continuous attack by part, by former weight 30.25 / 30second recovery period down to 29.00 / 30second up significant differences in levels (p<.05)。Conclusion: In single treatment of rapid weight loss due to dehydration/increased water loss, achieved by a hot environment, , there is increase in renal function and derangement of electrolytes. This leads to a significant reduction in Judo performance measured by a 30 second stationary rapid attack.
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