أثر تكرار أداء ثلاثة أنواع من الكاتا على استجابة بعض الهرمونات و الأنزيمات و مكونات الدم و الجهاز الدوري لدى لاعبي الكاراتيه من أعمار 15-25 سنة

الملخص EN

The purpose of this study was to investigate the effect of repetition of three types of kata on the response of selected hormones, enzymes, among karate players aged 15-25 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 three groups 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.

Results shows that no statistically significant differences at the level of significance (α = 0.05) between the pre and posttests among the members of the first group (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 posttests among the members of the first group (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 posttests among the members of the second group (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 posttests among the members of the second group (Bassi Dai.

No statistically significant differences at the level of significance (α = 0.05) between the pre and posttests among the members of the third group (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 posttests among the members of the third group (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) in posttest in variables testosterone, thyroxin, CPK, according to the type of kata.

There were statistically significant differences at the level of significance (a = 0.05) in posttest in variables cortisol, LDH, according to the type of kata.

Based on the results of the study, the researchers recommended 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.