ABSTRACT
The importance of measurement repeatability in ergonomics and sports science research is often underestimated. Poor repeatability of measurements can influence the results of a study in which repeated measurements of a particular variable are recorded over time. In addition, a new measuring device will never be valid, compared to an established method, if it shows poor repeatability. The most important issue concerns measurement techniques that have been incorrectly deemed reliable through researchers employing the wrong statistical techniques. If an established “gold standard” has, in fact, poor reliability, highly reliable new methods will never agree with it and may, incorrectly, be deemed invalid.
