The validity and reliability of a novel indoor player tracking system for use within wheelchair court sports
Deutscher übersetzter Titel: | Die Validität und Reliabilität eines neuen Spielertrackingsystems bei Rollstuhlsportarten im Indoorbereich |
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Autor: | Rhodes, James; Mason, Barry S.; Perrat, Bertrand; Smith, Martin; Goosey-Tolfrey, Victoria |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 32 (2014), 17, S. 1639-1647, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2014.910608 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201501000488 |
Quelle: | BISp |
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 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) multidirectional movements. During each test, three sampling frequencies (4, 8 and 16 Hz) were compared to a criterion method for distance, mean and peak speeds. Absolute static error remained between 0.19 and 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. Verf.-Referat.