Kinematic Diagnosis of Throwing Motion of the Chinese Elite Female Discus Athletes Who Are Preparing for the Tokyo Olympic Games

Abstract

The purpose of this study was to examine the difference of kinematic skill characteristics between the Chinese and world elite female discus athletes. We used the methods of literature, three-dimensional video analysis, and mathematical statistics to compare and analyze the differences of some kinematic parameters between the three Chinese female discus athletes and four world female discus athletes. The result shows that the speed of discus release of the Chinese elite female discus athletes is lower ( p < 0.05 ) than that of the world elite female discus athletes. Compared to the world elite female discus athletes, the height of release is higher ( p < 0.05 ). But there was no significant difference in the angle of release ( p > 0.05 ), rotation rhythm ( p > 0.05 ), and discus speed increment ( p > 0.05 ) in different stages during the throwing procedure from double support stage to delivery stage. The results may provide reference for the special technique training of the Chinese female discus throwers, so as to improve the discus throwing level of Chinese women.

Low-Cost Portable System for Measurement and Representation of 3D Kinematic Parameters in Sport Monitoring: Discus Throwing as a Case Study

“…The tests carried out for its verification provided satisfactory and acceptable results, showing that the device can be used to monitor and track the training of the athletes. Moreover, an important feature to consider in this solution, and that is not present in typical high-speed video recording and data processing systems used in the sports literature [ 3 , 19 , 20 , 21 , 22 , 23 , 24 ], is the recording and plotting of 3D trajectories in real-time of some kinematics parameters of a body part (in this work, the athlete’s wrist).…”

“…Notice that the purpose of this work is to describe a low-cost solution to record the technical parameters of a specific body landmark, not to provide a bio-mechanical study of elite or amateur athletes by analysing the relationship between performance and kinematics parameters. Another important feature of the solution presented is the recording and plotting of 3D trajectories in real-time of some kinematic parameters of a body part (in our examples, the athlete’s wrist), which is not present in typical high-speed video recording and data processing systems used in the sports literature [ 3 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Penggunaan Alat Termodofikasi Dalam Menumbuhkan Kompetensi Kognitif dan Psikomotorik Siswa Pada pembalajaran Lempar Cakram

“…Tabel Lempar cakram adalah salah satu cabang olahraga yang termasuk dalam atletik (Alamiri & Ameen, 2023; Wang et al, 2022). Dalam olahraga ini, seorang atlet melontarkan cakram yang terbuat dari logam dengan tujuan untuk melemparnya sejauh mungkin.…”