Dataset: A low-cost stand-alone platform for measuring motor behaviour across developmental applications

The following datasets contain acceleration data collected by means of both an optical motion capture system (MoCap, Vicon) and the KiD platform. KiD platform utilises a wearable, battery powered device, incorporating an Inertial Measurement Unit (IMU) comprising a three-axis accelerometer, a three-axis gyroscope, a three-axis compass. Data were collected from 20 children, instructed to perform ten cycles of four types of right-hand movements: horizontal, vertical, elliptical and figure-eight. After data collection, both KiD and MoCap data were run through a low-pass Butterworth filter with a 6 Hz cutoff. x-, y-, z-acceleration (Ax, Ay, Az) and acceleration magnitude (Am) were computed for both KiD and MoCap data. In order to evaluate agreement between KiD and MoCap, we computed Intra-class Correlation Coefficients (ICCs, McGraw and Wong, 1996) of Am. We averaged for each time-bin Am across the ten movement cycles of each participant, separately for each movement type. The files "ICC_KiD.xlsx" and "ICC_MoCap.xlsx" contain the data used for ICC analyses. In each file, column A refers to subject ID; column B refers to condition IC, where 1 = horizontal, 2 = vertical, 3 = elliptical, 4 = figure-eight; columns from C-L refer to the acceleration magnitude from 10% to 100% of movement time.本数据集包含由光学运动捕捉系统（MoCap, Vicon）与KiD平台采集的加速度数据。KiD平台搭载一款可穿戴、电池供电的设备，该设备集成了惯性测量单元（Inertial Measurement Unit, IMU），包含三轴加速度计、三轴陀螺仪与三轴罗盘。数据采集自20名儿童，受试者被指示完成四类右手动作各十个循环：水平运动、垂直运动、椭圆运动与八字形运动。数据采集完成后，KiD与MoCap采集的所有数据均经过截止频率为6Hz的低通巴特沃斯滤波器（low-pass Butterworth filter）处理。针对两类设备采集的数据，我们分别计算了x、y、z轴加速度（Ax, Ay, Az）与加速度模长（acceleration magnitude, Am）。为评估KiD与MoCap数据的一致性，我们计算了加速度模长（Am）的组内相关系数（Intra-class Correlation Coefficients, ICCs，McGraw与Wong, 1996）。针对每名受试者的每类动作，我们分别将其十个运动循环中各时间分箱的加速度模长（Am）取平均。文件"ICC_KiD.xlsx"与"ICC_MoCap.xlsx"包含了用于组内相关系数分析的数据集。每个文件中，A列代表受试者编号，B列代表运动条件IC，其中1对应水平运动、2对应垂直运动、3对应椭圆运动、4对应八字形运动；C至L列对应运动时长10%至100%区间的加速度模长。