스피드 스케이팅 500m 곡선주로에 대한 경기력 결정요인 분석

The purpose of this study was to investigate the relationship between the kinematic and kinetic variables of the stroke for the 2nd and 4th corners in the official speed skating 500 m race and the speed variables of each straight and curve section to determine their effects on performance. A total of 8 elite speed skaters were selected as subjects in this study, the independent variables were the mean speed and velocity by each section, displacement per stroke, push-off angle, stroke frequency, work per stroke, and stroke power in the 2nd & 4th corners. Pearson’s correlation analysis and simple regression analysis were conducted to investigate the relationship between kinematic and kinetic variables in each analyzed section and 500 m performance. First, To generate stroke power, it is efficient to increase the amount of work per stroke rather than the stroke frequency, but it is important to maintain the stroke frequency to minimize the loss in the speed change. Second, It is important to increase the stroke frequency for fast speed in the 2nd corner, increase the amount of work per stroke and stroke power in the 4th corner, and keep the stroke frequency to maintain the high speed. Third, The instantaneous velocity at the end of the 2nd corner is positively correlated with the stroke frequency(r=.857, p<.01), and negatively correlated with the amount of work per stroke (r=-.747, p<.05). On the other hand, the instantaneous velocity at the end of the 4th corner is positively correlated with the amount of work per stroke(r=.847, p<.01) and stroke power(r=.895, p<.01). Fourth, Increasing the average speed in the order of mean speed of the 2nd corner(R² = 0.820), mean speed of the 4th corner(R² = 0.696), and mean velocity of 400~500 m home straight(R² = 0.645) improves the 500 m performance.