期刊
出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/21681163.2021.1931963
关键词
Accuracy; reliability and motion analysis system
资金
- Operational Program of Alentejo [ALENT-07-0262-FEDER-001883]
The study aimed to evaluate the accuracy and time-consuming of the automatic digitalization feature of 3D motion analysis systems, as well as the reliability of 3D position when a football player performed a hard kick with spin. The results showed good accuracy of automatic digitalization and high Intra-Class Correlation, making it suitable for free-kick analysis.
The aims were: (1) to determine the accuracy and time-consuming of the automatic digitalization feature of 3D motion analysis systems; and (2) to determine the reliability of the 3D position when a football player performed a hard kick with spin. Four high-speed cameras (Casio ZR200 (512x384)) with a 240 Hz field rate were used. Automatic scanning of the Kinovea (R) and APAS (R) software was used. The accuracy was determined through mean absolute error, maximum absolute error, mean standard deviation of absolute error, and the variability values. The reliability was calculated with the Intra-Class Correlation. The mean absolute error (3.62 to 3.78 mm), maximum absolute error (9.09 to 11.61 mm), mean standard deviation of absolute error (0.01 to 0.59 mm), variability values (<1 mm), and the auto-digitalization time (16 to 31 minutes) were calculated and were within the values obtained in the literature. The reliability was determined with the Intra-Class Correlation, and the results were higher than 0.90, warrantied a high consistency for chosen software. The accuracy and the reliability intra-operator were determined, and the results indicated that it is possible to apply the free 3D camera system, with consistency in free-kick analysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据