여자 핸드볼 선수들의 미끄러운 실내바닥에서 J-STEP 운동화 착용후 움직임에 대한 효과 검증 = The efficiency of J-step foot wear on indoor wet floor in female handball player

다국어 초록 (Multilingual Abstract)

The purpose of this study was to investigate the effects of J-step footwear on power output of lower extremities and aerobic capacity on indoor wet floor. Eight female handball athletes (age: 20.0 ± 1.31yrs, height: 171.38 ± 2.70 cm, weight: 63.0 ± 3.07 kg, career: 10.37 ± 3.24, n = 8) were participated and underwent a dynamic electromyography (EMG) to collect the data [power output of right lower extremities (side step by standing middle of 2.4m, 20sec), heart rate, VO2 (K4b2) , 200m running (20m×5time, sec). On experiment day, all subjects alternatively took normal handball footwear or J-step handball footwear, To make wet floor, water was equally scrubbed on the indoor floor using mop (side step: 2.4 m × 1.5 m with 500 ml; go & back: 6 m × 1.5 m with 1000 ml; 200 m running: 20 m × 6 m with 1400 ml). During side step, power output of lower extremities was higher in J-step handball footwear compared to normal handball footwear (NHF), but this is not reached statistically different. In addition, running time in J-step handball footwear was much shorter than that of normal handball footwear (J-step handball footwear, 68.753.54 sec vs.NHF,91.26±3.54sec). Finally, HR was sjgnificantly higher in J-step foot wear compared to NHF in 200m running(p<.05).