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.