フィギュアスケートの２種類のジャンプ踏切における起こし回転と下肢の伸縮が跳躍高に及ぼす影響

抄録

  This study examined the impact of the “hinge moment” and “telescoping of the lower limbs” of axel and loop jump heights during figure skating take-offs. We recruited five figure skaters aged 19 to 25 years, who have completed the Figure Skating Badge Test level 6 to 7. Each participant executed two different types of jumps, ranging from a single jump to a maximum number of rotations, only once, and the jumps were measured by a high-speed camera. We obtained the three-dimensional coordinates of the body’s center of gravity and calculated the approach speed, jump height, vertical velocity, acceleration due to the hinge moment and telescoping of the lower limbs, as well as the braking effect of the blade during take-offs.

  The results are as stated below:

（1）The hinge moment and telescoping of the lower limbs contributed to achieving the jump height during take-offs.

（2）For axel jumps, the hinge moment strongly influences jump height, related to the sudden braking by the blade and the SSC（Stretch Shortening Cycle）of the lower limbs.

（3）For loop jumps, both the hinge moment and telescoping of the lower limbs affected jump height achievement.