Accuracy and Inter-Unit Reliability of Ultra-Wide-Band Tracking System in Indoor Exercise

Alejandro Bastida-Castillo; Carlos David Gómez-Carmona; Ernesto De la Cruz-Sánchez; Xavier Reche-Royo; Sergio José Ibáñez; José Pino Ortega

doi:10.3390/app9050939

journal article Open Access Mar 06, 2019

Accuracy and Inter-Unit Reliability of Ultra-Wide-Band Tracking System in Indoor Exercise

Alejandro Bastida-Castillo Carlos David Gómez-Carmona Ernesto De la Cruz-Sánchez

Xavier Reche-Royo Sergio José Ibáñez

José Pino Ortega

Applied Sciences Vol. 9 No. 5 pp. 939 · MDPI AG

View at Publisher Save 10.3390/app9050939

Abstract

The purpose of this study was to assess the accuracy of positional data and the inter-unit reliability of an ultra-wide-band (UWB) tracking system. Four well-trained males performed five courses designed for the analysis of x- and y-coordinate accuracy analysis, specifically related to the positional distance variation between the UWB data and the fixed reference lines of a basketball court. This was achieved using geographic information system (GIS) mapping software that calculated, for each interval and participant, the distance from the main axis of displacement and from the opposite side of the court each 0.5 s (x and y coordinate). The accuracy of the results was satisfactory, with a mean absolute error of all estimations for the x-position of 5.2 ± 3.1 cm and for the y-position of 5.8 ± 2.3 cm. Regarding inter-unit reliability, the intra-class correlation coefficient (ICC) value was high for the x-coordinate (0.65) and very high for the y-coordinate (0.85). The main findings of the study were: (i) The accuracy of UWB tracking systems can be considered suitable for practical applications in sport analyses; (ii) position estimations are very precise and acceptable for tactical analyses; (iii) the error of the position estimations does not change significantly across different courses; and (iv) the use of different devices does not significantly affect the measurement error.

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References

Details

Published: Mar 06, 2019
Vol/Issue: 9(5)
Pages: 939
License: View

Authors

A

Alejandro Bastida-Castillo

BioVetMed & SportSci Research Group, University of Murcia, San Javier 30730, Spain

C

Carlos David Gómez-Carmona

Optimization of Training and Sports Performance Research Group (GOERD), Department of Didactics of Music, Plastic and Body Expression, Sports Science Faculty, University of Extremadura, Caceres 10071, Spain

E

Ernesto De la Cruz-Sánchez

BioVetMed & SportSci Research Group, University of Murcia, San Javier 30730, Spain

X

Xavier Reche-Royo

Strength & Conditioning Coach, Indoor Tracking and Data Analyst, Sport Technology Department, FC. Barcelona, Barcelona 08028, Spain

S

Sergio José Ibáñez

Optimization of Training and Sports Performance Research Group (GOERD), Department of Didactics of Music, Plastic and Body Expression, Sports Science Faculty, University of Extremadura, Caceres 10071, Spain

J

José Pino Ortega

BioVetMed & SportSci Research Group, University of Murcia, San Javier 30730, Spain

Cite This Article

Alejandro Bastida-Castillo, Carlos David Gómez-Carmona, Ernesto De la Cruz-Sánchez, et al. (2019). Accuracy and Inter-Unit Reliability of Ultra-Wide-Band Tracking System in Indoor Exercise. Applied Sciences, 9(5), 939. https://doi.org/10.3390/app9050939

Accuracy and Inter-Unit Reliability of Ultra-Wide-Band Tracking System in Indoor Exercise

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