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The validity and reliability of a novel indoor player tracking system for use within wheelchair court sports

Rhodes, James M.; Mason, Barry S.; Perrat, Bertrand; Smith, Martin; Goosey-Tolfrey, Victoria L.

Authors

James M. Rhodes

Barry S. Mason

Bertrand Perrat

Martin Smith

Victoria L. Goosey-Tolfrey



Abstract

The aim of the current study was to investigate the validity and reliability of a radio- frequency based system for accurately tracking athlete movement within the wheelchair court sports. Four wheelchair specific tests were devised to assess the system during i) static measurements ii) incremental fixed speeds iii) peak speeds, and iv) multi-directional movements. During each test, three sampling frequencies (4, 8 & 16 Hz) were compared to a criterion method for distance, mean and peak speeds. Absolute static error remained between 0.19-0.32 m across the session. Distance values (test ii) showed greatest relative error in 4 Hz tags (1.3%), with significantly lower errors seen in higher frequency tags (< 1.0%). Relative peak speed errors of < 2.0% (test iii) were revealed across all sampling frequencies in relation to the criterion (4.00 ± 0.09 m·sˉ¹). Results showed 8 and 16 Hz sampling frequencies displayed the closest to criterion values, whilst intra-tag reliability never exceeded 2.0% coefficient of variation (% CV) during peak speed detection. Minimal relative distance errors (< 0.2%) were also seen across sampling frequencies (test iv). To conclude, the indoor tracking system is deemed an acceptable tool for tracking wheelchair court match-play using a tag frequency of 8 or 16 Hz.

Journal Article Type Article
Publication Date Apr 23, 2014
Journal Journal of Sports Sciences
Print ISSN 0264-0414
Electronic ISSN 0264-0414
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 32
Issue 17
APA6 Citation Rhodes, J. M., Mason, B. S., Perrat, B., Smith, M., & Goosey-Tolfrey, V. L. (2014). The validity and reliability of a novel indoor player tracking system for use within wheelchair court sports. Journal of Sports Sciences, 32(17), doi:10.1080/02640414.2014.910608
DOI https://doi.org/10.1080/02640414.2014.910608
Keywords disability sport, field-based testing, accuracy, radio-frequency, performance analysis
Publisher URL http://www.tandfonline.com/doi/full/10.1080/02640414.2014.910608
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Sports Sciences on 23/04/2014, available online: http://www.tandfonline....80/02640414.2014.910608

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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