A New Time Measurement Method Using a High-End Global Navigation Satellite System to Analyze Alpine Skiing

Autor/inn/en	Supej, Matej; Holmberg, Hans-Christer
Titel	A New Time Measurement Method Using a High-End Global Navigation Satellite System to Analyze Alpine Skiing
Quelle	In: Research Quarterly for Exercise and Sport, 82 (2011) 3, S.400-411 (12 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0270-1367
Schlagwörter	Recreational Activities; Measurement Techniques; Time; Satellites (Aerospace); Comparative Analysis; Validity; Computation; Foreign Countries; Navigation; Slovenia + Suchen Sie Ihr Suchwort? Freizeitgestaltung; Messtechnik; Zeit; Satellit; Gültigkeit; Ausland; Slowenien
Abstract	Accurate time measurement is essential to temporal analysis in sport. This study aimed to (a) develop a new method for time computation from surveyed trajectories using a high-end global navigation satellite system (GNSS), (b) validate its precision by comparing GNSS with photocells, and (c) examine whether gate-to-gate times can provide more detailed information about alpine skiing performance. The results demonstrated small mean time differences with no systematic bias, with a velocity dependent scatter of time differences, which diminished at higher velocities. Furthermore, the multiple gate-to-gate and lag times demonstrated that the GNSS enabled a more detailed analysis compared to photocells. The measurements using GNSS showed high validity and potential as a tool for more specific analysis of performance in skiing. (Contains 5 figures and 1 table.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10