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Letter

Estimating Throwing Speed in Handball Using a Wearable Device

1
Department of Public Health, Aarhus University, 8000 Aarhus, Denmark
2
Human Movement Analysis Laboratory, Department of Orthopaedic Surgery, Copenhagen University Hospital Amager-Hvidovre, 2650 Hvidovre, Denmark
3
Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense, Denmark
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(17), 4925; https://doi.org/10.3390/s20174925
Received: 3 August 2020 / Revised: 21 August 2020 / Accepted: 28 August 2020 / Published: 31 August 2020
(This article belongs to the Special Issue Sensors in Sports Biomechanics)
Throwing speed is likely a key determinant of shoulder-specific load. However, it is difficult to estimate the speed of throws in handball in field-based settings with many players due to limitations in 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 of all models: 1.00) and precise (R2 = 0.71–0.86, mean absolute error = 1.30–1.82 m/s). We conclude that the developed method provides practitioners and researchers with a feasible and cheap method to estimate throwing speed in handball from segments of wrist acceleration signals containing only a single throw. View Full-Text
Keywords: accelerometer; throwing velocity; inertial measurement unit; throwing load; shoulder load accelerometer; throwing velocity; inertial measurement unit; throwing load; shoulder load
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    Doi: 10.17605/OSF.IO/YARFP
MDPI and ACS Style

Skejø, S.D.; Bencke, J.; Møller, M.; Sørensen, H. Estimating Throwing Speed in Handball Using a Wearable Device. Sensors 2020, 20, 4925. https://doi.org/10.3390/s20174925

AMA Style

Skejø SD, Bencke J, Møller M, Sørensen H. Estimating Throwing Speed in Handball Using a Wearable Device. Sensors. 2020; 20(17):4925. https://doi.org/10.3390/s20174925

Chicago/Turabian Style

Skejø, Sebastian D., Jesper Bencke, Merete Møller, and Henrik Sørensen. 2020. "Estimating Throwing Speed in Handball Using a Wearable Device" Sensors 20, no. 17: 4925. https://doi.org/10.3390/s20174925

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