Kinematics Study on Gate-Turning Technique of Sit-Skiers in Winter Paralympic Alpine Skiing
10.16156/j.1004-7220.2025.04.028
- VernacularTitle:冬季残奥会坐姿高山滑雪选手旗门转弯技术的运动学研究
- Author:
Xiangdong WANG
1
;
Zhiyi XU
;
Qinghua XU
;
Zongxiang HU
Author Information
1. 集美大学体育学院,福建厦门 361021
- Publication Type:Journal Article
- Keywords:
paralympic sports;
alpine skiing;
sit skiing;
gate-turning technique;
skiing efficiency;
kinematic analysis
- From:
Journal of Medical Biomechanics
2025;40(4):1005-1011,1026
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the kinematic patterns of gate-turning techniques in sitting alpine skiing at the Winter Paralympic Games and their impacts on skiing performance.Methods Using drone footage and inertial sensor technology,kinematic data were collected from 11 alpine sit-skiers preparing for the Winter Paralympics.Key technical indicators such as turning radius,skiing speed,and trajectory length were analyzed for their relationship with skiing performance.Results The minimum turning radius during gate turns was(15.80±3.55)m,and turning radius showed a significant positive correlation with skiing time(r=0.40,P=0.02)and trajectory length(r=0.88,P＜0.01).The maximum skiing speed was(16.92±1.60)m/s,which was strongly negatively correlated with total skiing time(P＜0.01).Exit speed was also significantly positively correlated with total skiing distance(P＜0.05).Additionally,single-gate technical characteristics(such as turning radius and speed variation),were strongly reflective of overall skiing performance.Conclusions Optimizing turning radius and minimizing speed loss are critical for improving skiing efficiency.Single-gate kinematic analysis provides a scientific basis for overall technique optimization and offers valuable guidance for training and competition strategy design.
