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Error Correction Processing in Timing Lights for Measuring Sprint Performance: Does It Work?

Altmann, Stefan; Ringhof, Steffen; Becker, Benedikt; Woll, Alexander; Neumann, Rainer

Abstract (englisch):
Purpose:
To investigate if error correction processing (ECP) algorithms in timing lights are able to eliminate or to reduce measurement errors (ME) and false signals due to swinging arms or legs.

Methods:
First, a dummy was used to check if ECP generally works. Second, 15 male sports students performed sprints over 5 m and 10 m. Timing lights with ECP and a high-speed camera as a gold standard were used to simultaneously capture the athlete when passing the timing lights at start, 5 m and 10 m, respectively. ME of the timing lights were calculated for hip and upper body.

Results:
The dummy condition revealed that ECP is able to eliminate ME. In real sprint conditions, ME was highest for timing light at start and when using the hip as a reference. Overall, out of 120 trials only four false signals were not detected by ECP. They all occurred at the start timing light, with highest ME being 0.263 s (hip) and 0.134 s (upper body). Regarding 5 m and 10 m, all false signals were eliminated.

Conclusions:
As proven through video analyses, ECP eliminated almost all false signals. Largest ME at the start timing light were associa ... mehr


Zugehörige Institution(en) am KIT Institut für Sport und Sportwissenschaft (IfSS)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1555-0265, 1555-0273
KITopen-ID: 1000085667
Erschienen in International journal of sports physiology and performance
Seiten 1-13
Vorab online veröffentlicht am 29.05.2018
Schlagworte Measurement Error, Photocells, Timing Gates, Validity, High-Speed Video Analysis, Smartspeed Pro
Nachgewiesen in Web of Science
Scopus
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