Reliability of power output derived from the nonmotorized treadmill test.

There is limited evidence that the nonmotorized treadmill (NMT) test is able to elicit peak power (PP) and mean power (MP) reliably for high-intensity and short-duration exercises in untrained adults. This study aimed to establish the intra- and intersession reliability of PP and MP derived from the NMT test. Nine untrained men and 9 untrained women participated in the study. They completed 2 sessions of a 10-second NMT test on 2 separate occasions that were scheduled 2 weeks apart (intersession test). Each session consisted of 2 sprints (intrasession test). On the third session, the subjects performed two 30-second Wingate Anaerobic Tests. Inter- and intrasession power measurements were analyzed using repeatability coefficient, typical error, coefficient of variation, change in the mean, and Pearson correlation coefficient. Inter- and intrasession measurements using these statistical tests all showed high reliability of the results. The study clearly showed that PP and MP measurements derived from the NMT test was just as reliable as the current "gold standard."