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Electronic pedometers are accurate for assessing steps taken while walking in normal weight adults but the accuracy of these devices has not been tested in overweight and obese men and women. The primary purpose of this study was to assess the accuracy of an electronic pedometer for measuring steps taken at various walking speeds in groups of adults with variations in body mass index (BMI). The secondary purpose was to determine if the manufacturer recommended position is the best placement position for overweight and obese adults. Participants were categorized into one of three BMI categories identified by the World Health Organization: normal (N= 25;< 25 kg× m-2), overweight (N= 24; 25-29.9 kg× m-2), or obese (N= 17;≥ 30 kg× m-2). Participants walked on a treadmill for 3 min at 54, 67, 80, 94, and 107 m× min-1 for a total of 15 min. During the treadmill walking, three electronic pedometers tallied …