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Excerpt
The electronic pedometer is a device that is worn on the hip and counts the number of steps an individual takes in a given time period. In addition to calculating steps, some pedometers have the capability to estimate caloric expenditure. A new electronic pedometer has been developed that captures and stores steps and caloric expenditure for up to 41 days. PURPOSE: This study examined the validity of this new pedometer (NP) and contrasted its performance with another that is a widely used older pedometer (OP). METHODS: Ten subjects walked and ran on a treadmill at various speeds (2, 2.5, 3, 3.5, 4, 5, 6 mi×hr−1) for 5-minute stages. An investigator concurrently determined steps by a manual hand counter and energy expenditure (kcal) was measured by indirect calorimetry. RESULTS: There were significant main effects of speed and measurement technique on steps recorded and on kcals, as well as a significant measurement technique by speed interaction (p<0.0002). In general, OP tended to underestimate number of steps below 3 mi×h−1, but not at higher speeds, while the NP was accurate at all speeds. CONCLUSIONS: In general, the NP was more accurate for assessing steps compared to the OP. Further testing and evaluation of this pedometer should be conducted in different groups using a variety of experimental designs.
