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An-Najah University Journal for Research - B (Humanities)

Abstract

The purpose of this study was to investigate the effect of repetition of threetypes of kata on the response of selectedhormones, enzymes,among karate players aged15-25 years. The purposive sample consisted of (30) players from various sports clubs and karate centers in the northern West Bank (Nablus, Tulkarem, Jenin, Qalqilya) and holding a black belt and above. The means of (age, height, weight, and body mass index) were respectively (17.13 yr, 171.77 cm, 62.47 kg, and 21.04 kg/m²). The study sample was divided into threegroups of (10) players in each group, the first group do Tekki Shodan Kata, the second group do Bassi Dai Kata, and the third group do Kanku Dai Kata. The independent variables of the study consist of some hormones (testosterone, cortisol,thyroxin), enzymes (LDH, CPK),Having the data collected, they analyzed statistically by using (SPSS) Paired-t-test, One Way ANOVA and Scheffe Test for post hoc.Resultsshows that no statistically significant differences at the level of significance (α= 0.05) between the pre and posttestsamong the members of the firstgroup (Tekki Shodan) in variables cortisol, thyroxin, (LDH), (CPK).There were statistically significant differences at the level of significance (α= 0.05) between the pre and posttestsamong the members of the firstgroup (Tekki Shodan) in variables testosterone,in favor of the post test.No statistically significant differences at the level of significance (α= 0.05) between the pre and posttestsamong the members of the secondgroup (Bassi Dai) in variables testosterone, cortisol, thyroxin, (LDH), (CPK).There were statistically significant differences at the level of significance (α= 0.05) between the pre and posttestsamong the members of the secondgroup (Bassi Dai.No statistically significant differences at the level of significance (α= 0.05) between the pre and posttestsamong the members of the thirdgroup (Kanku Dai) in variables testosterone, cortisol, thyroxin, (LDH), (CPK),There were statistically significant differences at the level of significance (α= 0.05) between the pre and posttestsamong the members of the thirdgroup (Kanku Dai) in variables (CPK),in favor of the post test.Results shows also that no statistically significant differences at the level of significance (α= 0.05)inposttestin variables testosterone, thyroxin, CPK,according to the type of kata.There were statistically significant differences at the level of significance (a = 0.05)inposttestin variables cortisol, LDH,according to the type of kata.Based on the results of the study, the researchersrecommended to generalize these results to the Palestinian universities, karate centers and trainers (coaches) in order to design training programs according to scientific bases containing these variables.

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