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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 associated with a distinct forward leaning of the athletes. ... 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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