Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Novel Method for Estimating Throwing Speed in Handball using a Wearable Device

Version 1 : Received: 3 August 2020 / Approved: 4 August 2020 / Online: 4 August 2020 (11:03:03 CEST)

A peer-reviewed article of this Preprint also exists.

Skejø, S.D.; Bencke, J.; Møller, M.; Sørensen, H. Estimating Throwing Speed in Handball Using a Wearable Device. Sensors 2020, 20, 4925. Skejø, S.D.; Bencke, J.; Møller, M.; Sørensen, H. Estimating Throwing Speed in Handball Using a Wearable Device. Sensors 2020, 20, 4925.

Journal reference: Sensors 2020, 20, 4925
DOI: 10.3390/s20174925

Abstract

Understanding the shoulder-specific load in handball is important for both prevention and rehabilitation of shoulder injuries. The shoulder-specific load is largely a result of the number and speed of throws. However, it is difficult to quantify number and speed of throws in handball due to limitations in the current technology. Therefore, the purpose of this study was to develop a novel method to estimate throwing speed in handball using a low-cost accelerometer-based device. Nineteen experienced handball players each performed 25 throws of varying types while we measured the acceleration of the wrist using the accelerometer and the throwing speed using 3D motion capture. Using cross-validation, we developed four prediction models using combinations of the logarithm of the peak total acceleration, sex and throwing type as the predictor and the throwing speed as the outcome. We found that all models were well-calibrated (mean calibration of all models: 0.0 m/s, calibration slope range: 0.99-1.00) and precise (R2 = 0.71-0.85, mean absolute error = 1.32-1.82 m/s). We conclude that the developed method appear to provide practitioners and researchers with a feasible and cheap method to estimate throwing speeds in handball.

Subject Areas

Accelerometer; throwing velocity; inertial measurement unit; throwing load; shoulder load

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