이 연구는 초등학생 5~6학년을 대상으로 장기간 태권도 수련이 신체구성(BMI, LBM)과 건강체력(근력, 근지구력, 심폐지구력, 순발력), 성장인자(growth hormone, IGF-1)에 어떠한 영향을 미치는지를 알아보기 위하여 태권도에 처음 입문하는 초등학생 11명과 대조군 11명 총 22명을 대상으로 구성하여 실시하였고 1일 60분, 주 5회, 24주간 태권도 프로그램을 수행하였다. 측정시기는 수련 프로그램 전, 12주 후, 24주 후 각 변인을 측정하여 반복측정 이원변량분석(2-way ANOVA repeated measure)으로 분석하였으며 다음과 같은 결론을 도출하였다. 태권도 수련군에서 BMI 감소가 나타났으며, 그룹과 시기 간 상호작용효과가 나타났고(p<.05), LBM은 태권도 수련군에서 증가하였으며, 그룹과 시기 간 상호작용효과가 나타났다(p<.05). 체력은 태권도 수련군에서 근지구력과 심폐지구력이 통제군에 비해 상대적으로 향상되었으며 그룹과 시기 간 상호작용효과가 나타났다(p<.05). 성장인자는 태권도 수련군에서 GH와 IGF-1 모두 통제군에 비해 상대적으로 증가하였으며, 그룹과 시기 간 상호작용효과가 나타났다(p<.05). 이상과 같이 24주간의 태권도 수련은 신체구성과 건강체력, 성장인자에 긍정적인 영향을 미치며 초등학생들의 건강하고 생활을 영위하는 데 도움을 줄 수 있는 운동임을 시사한다.
In order to investigate the effect of long-term Taekwondo training on the body composition(BMI, LBM), physical strength(muscular strength, muscular endurance, cardiovascular endurance, quickness) and the growth hormones(IGF-1) of 5th and 6th grade elementary school students, the investigation was conducted for the 11 elementary school students who start Taekwondo first and the 11 persons of comparison group of total 22 students and the Taekwondo program was performed 60 minutes a day, 5 times a week for 24 weeks. The variables were measured individually before starting the training program, after 12 weeks and after 24 weeks and they were analyzed through the 2-way ANOVA repeated measurement. As a result, the BMI of training group decreased and there was an interaction effect between group and time(p<.05). The LBM of training group increased and there was an interaction effect between group and time(p<.05). As for the physical strength, the muscular endurance and cardiovascular endurance of training group was relatively improved compared with the comparison group and there was an interaction effect between group and time(p<.05). As for the growth hormones, the GH and IGF-1 of training group increased relatively compared with the comparison group and there was an interaction effect between group and time(p<.05). Likewise, the Taekwondo training for 24 weeks has a positive effect on the body composition, physical strength and growth hormones and it suggests that Taekwondo is helpful for the healthy life of elementary school students.
