found physiological differences between finishers and DNFs among horses engaging in long-distance races. (2002) performed ANOVA analysis of finishers as compared to DNFs in an ultramarathon and concluded that they had statistically different nutrition and liquid intake. For example, a 2009 New York Times analysis of New York City Marathon results concluded that recreational competitors were more likely to finish the race rather than be classified as DNF: "Elite runners seem more inclined to drop out rather than simply complete the race, and runners visiting from abroad seem more inclined to push themselves to the finish line no matter their time." Glace et al. ĭNFs are also not always evenly distributed across all participants. For example, in track and field, Edouard found a 22% overall DNF rate among high level decathlon competitors but DNF rates in individual events ranging from less than 1% to over 6%. Numerous studies have sought to figure out why DNF rates vary greatly, even within the same competitive discipline. Scholarly research Decathlon competitors Race participants try to avoid receiving a DNF, as some associate it with poor driving. Competitive snow skiing and snowboarding. Motocross and quad racing, both desert and short-track.Automotive racing such as Formula One NASCAR Ind圜ar off-road racing, including buggy, trucks, kart, and UTVs, both desert and short-track.In racing, did not finish ( DNF) denotes a result of a participant who does not finish a given race, either because of a mechanical failure, injury, or involvement in an accident.
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