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This study was designed to test measurement error in a digital pedometer. Twenty-four Yamax MLS-2000 digital pedometers were tested using a walking test and a shake test before and after heavy use in a large study. The mean deviation from 100 steps for the walking test was 2.26 ± .80 (M ± SD) and 1.71 ± .88 on pretest and posttest, respectively. Mean deviation from 100 shakes for the shake test was 0.39 ± 0.29 and 0.60 ± 0.62 for the pretest and posttest, respectively. No pedometer exceeded 5% error (i.e., 5 steps out of 100) on any of the tests. No significant differences were found between the pretest and posttest, F(1, 46) = 1.49, p ⪈ .229, but significant differences were found between the walking and the shake tests, F(1, 46) = 109.04, p < .01. The interaction was significant, F(1, 46) = 7.76, p £ .008. This study demonstrated that very little measurement error existed in the Yamax MLS-2000 digital pedometer. Researchers can have confidence that the scores obtained using this pedometer are accurate.
Vincent et al. (Sat,) studied this question.
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