Kinematic analysis of figure skating jump by using wearable inertial measurement units

EasyChair Preprint 3356

Abstract

The purpose of this study is to show the feasibility of measuring and analyzing characteristics of figure skating jumps using wearable sensors. One elite figure skater, outfitted with five inertial measurement units (IMUs), performed flip jumps with single, double and triple revolutions. Take-off event and flight phase of each trial were under analysis. Kinematic differences among jumps with variant revolutions, as well as key factors for performing successfully landed triple jumps were determined by IMU signals. Compared with video-based method, this study revealed characteristics which coincide with previous studies as follows: at take-off event, the skater performed pre-rotations and took off with straighter body positions as revolutions increased (p<0.01). While during flight, the skater struggled more to maintain the smallest inertial of moment as revolutions increased (p<0.01). In order to perform successfully landed jumps, it was crucial that the skater improved the control of preparation for flight at take-off (p<0.05).

Keyphrases: Biomechanics, Figure Skating, IMUs, flip jump, kinematics, real-time automatic coaching

@booklet{EasyChair:3356,
  author    = {Yuchen Shi and Atsushi Ozaki and Masaaki Honda},
  title     = {Kinematic analysis of figure skating jump by using wearable inertial measurement units},
  howpublished = {EasyChair Preprint 3356},
  year      = {EasyChair, 2020}}