28 May '13, 10pm

Will Hopkins Essential #1: How to Interpret Changes in an Athletic Performance Test

When monitoring progression of an athlete with performance or other fitness tests, it is important to take into account the magnitude of the smallest worthwhile enhancement in performance and the uncertainty or noise in the test result. For elite athletes competing in sports as individuals, the smallest worthwhile enhancement would give the athlete an extra medal per 10 competitions; the required change in performance is 0.3 of the typical variation in an athlete's performance from competition to competition, or ~0.3-1% when expressed as a change in power output, depending on the sport. In team sports, where there is no direct relationship between team and test performance, an appropriate default for the smallest change in test performance is one-fifth of the between-athlete standard deviation (a standardized or Cohen effect size of 0.20). Noise in a test result is best ex...

Full article: http://sportsci.org/jour/04/wghtests.htm

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