Academic journal article Research Quarterly for Exercise and Sport

The Objectivity and Validity of Timers for the 40-Yard Dash

Academic journal article Research Quarterly for Exercise and Sport

The Objectivity and Validity of Timers for the 40-Yard Dash

Article excerpt

Nestor W. Sherman, and Mark A. Thobe, Texas A&M University-- Kingsville

Physical testing is routinely performed on collegiate and professional football players. The most utilized physical ability test in football is the 40-yard dash. Most coaches have two individuals time their runners(hand-held) in the 40-yard dash. Electronic timing is the "gold standard" for timing; however, few coaches have the facilities and resources to electronically time their athletes. Therefore, the purpose of this study was to determine the objectivity(rater reliability) and validity of handheld times from two timers. The participants (N = 235) were all collegiate football players at a camp where they were being evaluated by professional football scouts. The players represented all different football positions. The two timers were well-trained and experienced in timing football players in the 40-yard dash. Most players performed two 40-yard dash sprints and the fastest of the two times was used in the data analysis. If a player only completed one 40-yard dash then that time was used in the study. Durin g the 40-yard dash each player was timed by both timers and also electronically timed. Repeated measures analysis of variance (ANOVA) was used to determine the reliability estimates and if there were any significant differences in times from both timers and the electronic times. …

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