Holbrook Elizabeth A, Barreira Tiago V, Kang Minsoo
Department of Health and Human Performance, Middle Tennessee State University, Murfreesboro, TN 37132, USA.
Med Sci Sports Exerc. 2009 Mar;41(3):670-4. doi: 10.1249/MSS.0b013e3181886095.
The purpose of this study was to examine the validity and reliability evidence for the Omron Healthcare HJ-151 and HJ-720ITC pedometers for prescribed and self-paced walking.
A total of 47 adults (24 males, 23 females; age = 24 +/- 4.4 yr.; body mass index = 25.7 +/- 4.2 kg x m(-2)) participated in this study. Under prescribed walking conditions, 34 participants completed three randomized 100-m walking trials through a range of scripted walking speeds (slow, moderate, and very brisk) for each pedometer model. Under self-paced walking conditions, 31 participants completed one 1-mile walk on a standardized course for each model. HJ-151 pedometers were chosen at random from a pool of 54 devices and were worn along the waistband at the right hip, the left hip, and the midback, whereas HJ-720ITC pedometers were chosen from a pool of 24 devices and incorporated right pocket, left pocket, and backpack positions in addition to the three waist-mounted sites. Absolute percent error (APE) scores were calculated to examine pedometer accuracy between actual steps (a criterion measure) and pedometer-determined steps. Coefficient of variation (CoV) was computed to describe interdevice reliability.
With the exception of the HJ-720ITC at the backpack position in the prescribed walking setting (mean APE = 3.4%), the HJ-151 and the HJ-720ITC accurately reported step counts under prescribed and self-paced conditions (all APE values <3.0%). Moreover, interdevice reliability evidence was established for the HJ-151 and the HJ-720ITC under prescribed and self-paced conditions (all CoV values <2.1%).
The Omron HJ-151 and HJ-720ITC pedometers demonstrated validity and reliability at various mounting positions under prescribed and self-paced walking conditions with both healthy and overweight adults.
本研究旨在检验欧姆龙健康医疗HJ - 151和HJ - 720ITC计步器在规定步行和自由步速步行中的效度和信度证据。
共有47名成年人（24名男性，23名女性；年龄 = 24 ± 4.4岁；体重指数 = 25.7 ± 4.2 kg·m⁻²）参与了本研究。在规定步行条件下，34名参与者针对每个计步器型号，以一系列设定好的步行速度（慢、适中、非常轻快）完成了三次随机的100米步行试验。在自由步速步行条件下，31名参与者针对每个型号在标准化路线上完成了一次1英里的步行。HJ - 151计步器从54个设备中随机选取，佩戴在右髋部、左髋部和中背部的腰带处，而HJ - 720ITC计步器从24个设备中选取，除了三个腰部佩戴位置外，还包括右口袋、左口袋和背包位置。计算绝对百分比误差（APE）分数以检验计步器在实际步数（标准测量）和计步器确定的步数之间的准确性。计算变异系数（CoV）以描述设备间的信度。
除了在规定步行环境中HJ - 720ITC位于背包位置时（平均APE = 3.4%），HJ - 151和HJ - 720ITC在规定和自由步速条件下均能准确报告步数（所有APE值 < 3.0%）。此外，在规定和自由步速条件下为HJ - 151和HJ - 720ITC建立了设备间信度证据（所有CoV值 < 2.1%）。
欧姆龙HJ - 151和HJ - 720ITC计步器在规定和自由步速步行条件下，对于健康和超重成年人在各种佩戴位置均表现出效度和信度。
