Classification of movements of collegiate female soccer players using inertial measurement units

Yuki Masui, Nobuyoshi Hirotsu, Yu Shimasaki, Masafumi Yoshimura
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Abstract

This study aimed to classify the movements of female soccer players during matches using raw data measured by inertial measurement units (IMUs). Twelve collegiate female soccer players were equipped with IMUs (100 Hz), and raw triaxial acceleration data from eight official matches were analyzed. The measurement data were separated every 3 s, and a Fast Fourier Transform (FFT) was performed. After FFT, the Euclidean distances between the data when the players were in the stationary state and other states were calculated to classify the movements of the players using the k-means method. The data of the clustering numbers classified as the stationary state were eliminated after analyzing the movements of players by video filming the matches. After classification, the average Euclidean distances between the stationary state and other movements were calculated. Consequently, the results showed that the upward and downward directions of the raw data affected the classification. Using the methods of this study, it was also shown that the distribution of Euclidean distances differed from player to player. Our findings indicate that the method used in this study can be used to classify and characterize the movements of female collegiate soccer players.
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使用惯性测量单元对大学女子足球运动员的动作进行分类
本研究旨在利用惯性测量单元(IMU)测量的原始数据对女足运动员在比赛中的动作进行分类。研究人员为 12 名大学女足运动员配备了惯性测量单元(100 Hz),并分析了 8 场正式比赛的原始三轴加速度数据。测量数据每 3 秒分离一次,并进行快速傅立叶变换 (FFT)。快速傅立叶变换后,计算球员处于静止状态时的数据与其他状态的数据之间的欧氏距离,从而使用 k-means 方法对球员的运动进行分类。通过比赛录像分析球员的动作后,剔除被归类为静止状态的聚类数数据。分类后,计算了静止状态与其他动作之间的平均欧氏距离。结果表明,原始数据的上下方向会影响分类。使用本研究的方法还显示,不同球员的欧氏距离分布也不同。我们的研究结果表明,本研究中使用的方法可用于对大学女足球运动员的动作进行分类和描述。
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来源期刊
CiteScore
3.50
自引率
20.00%
发文量
51
审稿时长
>12 weeks
期刊介绍: The Journal of Sports Engineering and Technology covers the development of novel sports apparel, footwear, and equipment; and the materials, instrumentation, and processes that make advances in sports possible.
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