태권도 수련 어린이의 체격, 체형 및 골격성숙도에 관한 연구 = An analysis on Physique and Skeletal maturation of classified by somatotype in elementary school students who practice Taekwondo

다국어 초록 (Multilingual Abstract)

This study investigated physique and Skeletal maturation of classified by somatotype of 202 male elementary school students attending Taekwondo Gym in Seoul.Radiographs of the left hand and wrist were taken with an 31 portable(70kVp; 20mA) X-ray unit assembled in a portable apparatus designed and constructed according to the recommendations of Greulich and Pyle(1959). Skeletal age was determined by RUS scores(radius, ulna, and short bones) with TW2 method(Tanner et al., 1983). All skeletal maturity assessments of the samples were made by author. The reliability of the ratings by the study assessor was tested using a random sample of radiographs from 30 boys, aged 7-12 years. The absolute mean difference between first and second assessment was 0.17 years for the RUS(SD=0.27) system and 0.20 years for carpal(SD=0.26) system. Therefore, intra-observer reliability for skeletal age assessments were comparable with results of previous studies(Beunen et al. 1990; Song et al., 1998). All analysis were carried out by the SAS computer programs(SAS Institute, 1988). Skeletal maturity state was estimated by the calculation of 3, 10, 25, 50, 75, 90, and 97 percentiles. Comparisons between levels of maturity were applied by means of analysis of variance(ANOVA) and Duncan's a posteriori tests. The result showed that Physique increase nearly linearly between 7 and 12 years age boys.In factor of RUS score and bone age appeared Endomorphy average the highest in three groups in Somatotype.

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