테이핑 유무에 따른 왈츠 closed change 동작의 운동역학적 분석

Abstract

Kinetical Analysis of closed change Step Motion in Waltz by Pre-Taping and Post-Taping

Jung Il Seo

Department of physical Education The Graduate School Pukyong National University Directed by Professor Yong Jae Kim Ph. D.

Abstract

This study works with eight(8) female skilled dancers who have more than five(5) years of sports dance in City B. The purpose of this study is to run a comparative analysis on the motions of lower limbs before/after taping when doing 'Closed Change Step' motion in dance sports waltz and to find out what difference it can make to kinetical factors, through which to suggest fundamental data needed for injury prevention and efficient movement ability, not to mention the formation of correct posture for dance instructors and professional dancers. Based on the results, I could drew a conclusion as follows:

1) Change of Lower Limbs' Angle before/after Taping After taping, the right hip joint(coxa) showed a statistically significant difference at #1 point (p<.01), #3 point (p<.05), and #4 point(p<.01), and the left one showed a statistically significant difference (p<.01) at #1, 2, and 4 point. The right knee joint showed a statistically significant difference (p<.01) at #4 point after taping, and the left one showed a statistically significant difference (p<.01) at #2 point. The right ankle joint showed a statistically significant difference (p<.01) at #4 point, and the left one showed a statistically significant difference (p<.01) at #1 and 3 point.

2) Ground-Reaction Force(GRF) before/after Taping After taping the part of forefoot, pressure distribution of GRF showed a statistically significant difference (p<.01) in all sections, and the pressure distribution of forefoot turned out to be higher than that of rearfoot. The pressure distribution of rearfoot, after getting the part of rearfoot taped, showed a statistically significant difference (p<.01) in all sections.

3) Change of Lower Limbs' Muscle Activity before/after Taping The right rectus femoris had a high muscle activity at #1, #2, and #3 point after getting it taped and revealed a statistically significant difference (p<.01). The left one revealed a statistically significant difference at #2 point (p<.01) and #3 point (p<.05). The right anterior tibial muscle, after getting it taped, had a high muscle activity at #2 point and a statistically significant difference (p<.05). The right biceps femoris, after getting it taped, had a high muscle activity at #1 point and a statistically significant difference (p<.05). Gastrocnemius showed a high muscle activity on both the right and left after getting it taped and a statistically significant difference on the right (p<.05) and on the left (p<.01).

This study has a significance in that kinetical analysis on pre- and post-taping lower limbs, when doing the 'Closed Change Step' motion in waltz, could provide fundamental data necessary for efficient movement ability and injury prevention. Nevertheless, this study is limited to the motion of lower limbs and doesn't consider what effects the upper limbs can have on, so there are inadequacies in the data to comprehend the whole movement of 'Closed Change Step' motion in waltz. Therefore, further studies should take these factors into consideration more concretely, together with measurement of different muscle groups and involvement of various participation groups.