Data Acquired by a Single Object Sensor (IMU) of Table Tennis Forehand Strokes

The sensory data were collected from a total of 16 Table Tennis players mixed gender, aged between 19 and 38 years, who used the IMU mounted Racket. We considered the Basic, Topspin, and Push as the sample type of performed Forehand strokes. The Table Tennis Forehand strokes quality evaluation values were collected from a total of 3 Table Tennis highly educated and ranked coaches who manually scored the performed strokes based on the experiment evaluation metrics. The players used the IMU mounted racket when samples were collecting. Each subject's performance was evaluated, scored, and labeled by the coaches who placed around Table Tennis's table. Acquiring simultaneously by the Racket, the strokes' evaluation metrics values, and their labels, each player carried out a predetermined stroke performing protocols when data was gathering. Capturing order of the samples are: 1) the players started performing strokes, 2) paused for five seconds by the coaches at the end of each stroke performing, 3) stored the sensory data by the software into a single CSV file, 4) labeled and scored the players' performance by the coaches manually.本数据集的传感数据采集自共计16名男女混合的乒乓球运动员，年龄介于19至38岁之间，受试者均使用搭载惯性测量单元（Inertial Measurement Unit, IMU）的乒乓球拍。本次实验将正手击球的三类动作定为样本类型：基础击球、上旋击球与推挡击球。乒乓球正手击球的质量评价分值，由3名高学历且具备专业等级的乒乓球教练，依据实验评价指标对受试者完成的击球动作进行人工评分后获取。 样本采集阶段，运动员均使用搭载IMU的乒乓球拍。每位受试者的击球表现均由围站在球台旁的教练完成评价、评分与标注。数据采集过程中，球拍同步采集击球的评价指标数值及其对应标签；每位运动员需按照预先设定的击球动作规程完成整套动作。 样本采集流程如下： 1）运动员启动击球动作； 2）单次击球结束后，由教练暂停5秒； 3）采集软件将传感数据存储为单个逗号分隔值（Comma-Separated Values, CSV）文件； 4）教练对运动员的击球表现进行人工标注与评分。