Test-retest reliability of customised inertial measurement units (IMUs) in evaluating skateboarding related manoeuvres.

This article focuses on evaluating the reliability of a custom-made inertial measurement unit (IMU) system, embedded with an Arduino Pro Mini, for measuring skateboarding trick performances. A skilled male amateur skateboarder performed five tricks—Ollie, Nollie, Pop Shuvit, Kickflip, and Frontside 180—while data were collected via the IMU system attached to a customised skateboard. Statistical analyses, including the Kolmogorov-Smirnov test, intraclass correlation coefficients (ICC), Cronbach’s alpha, and Pearson correlation, demonstrated high reliability and consistency of the IMU device in capturing repeated trick executions. The findings suggest that this IMU system can provide objective and reliable data for assessing skateboarding manoeuvres, potentially aiding coaches and judges in performance evaluation, and offer methodological guidance for testing future custom IMU devices.