In short-distance races of international alhletic meets such as the World Championships in Athletics, the use of false start apparatuses is now required (International Association of Athletics Federations: IAAF Rules No. 1, Clause 1 a-c). In January, 2003, the IAAF applied a new rule, "...only one false start per race shall be allowed without the disqualification of the athlete(s) making the false start. Any athlete(s) making further false starts in the race shall be disqualified (IAAF Rules No. 162)." The effects of this change on the start reaction time are studied here by comparing the past five IAAF World Championships in Athletics games. The analysis used start reaction times recorded of sprint events (100m, 200m and 400m) of the world athletic championship games of 1999 Seville, 2001 Edmonton, 2003 Paris and 2005 Helsinki, 2007 Osaka. The start reaction time of total data is 2384 sample (1999 Seville, n=667; 2001 Edmonton, n=583; 2003 Paris, n=596; 2005 Helsinki, n=551; 2007 Osaka, n=608). We made comparison of five IAAF World Championships in Athletics games by computing distribution of start reaction time. The square of correlation coefficient R2 of frequency distribution and Gaussian curve f(x) were compared. As for the start reaction time distribution of the finals in particular, a different result was provided in rule revision before and after. The square of the Korrelation coefficient R2 is close upon 0.9 (Gaussian distribution) in the final of 2003 Paris game, final of 2005 Helsinki game and final of 2007 Osaka game, independent of the events, while it scatters in the other games. The results indicate the intrinsic distribution of the start reaction time after the rule change and entire decreases of the gamble starts. The rule change made the start reaction time delay by mean value 9 m second, but entirely improved the fair starting for individual athletes.
© Copyright 2008 Proceedings of First Joint International Pre-Olympic Conference of Sports Science and Sports Engineering. Volume I: Computer Science in Sports.. Veröffentlicht von World Academic Union. Alle Rechte vorbehalten. / Übersetzt mit https://www.DeepL.com/Translator