재즈댄스와 탄력밴드 저항운동이 성인여성의 근력, 유연성, 평형성 및 체지방에 미치는 영향

Abstract

Abstract

This study was designed for a total of 16 adult females in their 30s~40s who have never experienced jazz dance and elastic band resistance exercise. This group of people (16 people) were divided into an experimental group (8 people) and a comparison group (8 people).

This study was purposed to clarify what effects jazz dance and elastic band resistance exercise may have on adult females' muscular strength, flexibility, balance, and body fat through the 12-week jazz dance and elastic band resistance exercise program. The results of the experiment to analyze differences between before and after doing jazz dance and the exercise for 12 weeks led to conclusions as shown below. 1. Muscular Strength As a result of the experiment, it was found out that muscular strength (grasping power) of the experimental group increased from 22.07±3.95kg to 24.18±4.04kg after the experiment, showing significant difference by 2.11kg (p< .001). As to the comparison group, muscular strength decreased from 21.18±2.74kg to 21.08±2.76kg after the experiment, exhibiting significant difference by 0.10kg (p< .05). In case of the rate of change before/after the experiment between the experimental group and the comparison group, the rate of the experimental group (9.79±3.37) rose higher than that of the comparison group (-.49±.47) where significant difference (t14=8.533, p< .001) was appearing.

2. Flexibility In case of flexibility (trunk flexion), the experimental group showed change from 14.25±5.75cm to 18.18±5.00cm after the experiment, recording significant difference by 3.93cm ((p< .001). That of the comparison group decreased by 0.12cm from 11.82±7.77cm to 11.70±7.83cm, where no significant difference was detected. As to the rate of change before/after the experiment, the rate of the experimental group (39.09±36.68) featured higher change than the comparison group (-1.95±2.78) with significant difference (t14=3.156, p< .01).

3. Balance As a result of the experiment, it was found out that balance (single-leg stance balance) of the experimental group increased from 96.99±49.98 seconds to 178.53±54.63 seconds after the experiment, showing significant difference by 81.54 seconds (p< .001). As to the comparison group, balance decreased from 115.68±62.86 seconds to 114.51±62.17 seconds after the experiment, exhibiting decrease by 1.17 seconds, but no significant difference. In case of the rate of change before/after the experiment between the experimental group and the comparison group, the rate of the experimental group (103.51±55.16) rose higher than that of the comparison group (-.92±1.98) where significant difference (t14=5.352, p< .001) was shown.

4. Body Fat With regard to body fat, the experimental group showed change from 13.96±3.33kg to 12.38±3.04kg after the experiment, recording significant difference by 1.58kg (p< .01). That of the comparison group significantly increased by 0.78kg(p< .05) from 15.02±6.47kg to 15.02±6.47kg. As to the rate of change before/after the experiment, the rate of the experimental group (-11.28±5.20) showed lower change than that of the comparison group (5.26±5.20), showing significant difference (t14=-6.360, p< .001).

5. Body Fat Ratio In this experiment, body fat ratio exhibited significant difference by -2.42kg (p< .001) from 24.97±4.39% to 22.55±4.03% after the experiment. As to the comparison group, the ratio rose by 0.49kg from 25.97±5.60% to 26.46±5.32% where no significant difference was found out. In case of the rate of change before/after the experiment, the experimental group (-9.70±3.96) showed less change than that of the comparison group (2.28±3.57), exhibiting significant difference (t14=-6.349, p< .001).