Accuracy of uploadable pedometers in laboratory, overground, and free-living conditions in young and older adults
Accuracy of uploadable pedometers in laboratory, overground, and free-living conditions in young and older adults
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DOI：
10.1186/1479-5868-9-143
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发表时间：
2012-12-11
影响因子：
8.7
通讯作者：
Strath, Scott J.
中科院分区：
文献类型：
--
作者：
Dondzila, Christopher J.;Swartz, Ann M.;Strath, Scott J.
目的：本研究的目的是检查可上传计步器的准确性，以准确地计算步数在跑步机（TM）和地上（OG）步行，并在24小时监测期间（24小时）在自由生活条件下的年轻人和老年人。（n=53，年龄20-49岁; n=49，年龄50-80岁）完成TM方案（53.6、67.0、80.4、93.8和107.2 m/min，每种速度5分钟）和OG步行方案（自行确定“<正常”、“正常”和“>正常”步行速度），同时佩戴两个腰戴式可上传计步器（Omron HJ-720 ITC [OM]和Kenz Lifecorder EX [LC]）。实际步骤由研究人员手动统计。在24小时期间，参与者佩戴New Lifestyles-1000（NL）计步器（标准护理），该计步器连接到左大腿中线上方腰部水平的腰带上，此外，LC位于右大腿中线上方的腰带上。第二天，进行相同的程序，用OM代替LC。进行单样本t检验，以比较TM和OG方案期间测量和手动记录的步骤，以及24小时期间NL定量步骤与OM和LC定量步骤之间的步骤。平均误差步骤分数（MES，标准-设备）和95%的协议限制（LoA）counted.Results：有OM和tallied步骤之间没有显着差异的任何TM速度的年轻人或老年人组。在53.6 m/min TM速度（MES 31.4 [14.5，48.3]）和OG <正常步行速度（MES 12.0 [0.9，23.1]）期间，LC显著低估了年轻成人组的步数（p
Purpose: The purpose of this study was to examine the accuracy of uploadable pedometers to accurately count steps during treadmill (TM) and overground (OG) walking, and during a 24 hour monitoring period (24 hr) under free living conditions in young and older adults.Methods: One hundred and two participants (n=53 aged 20-49 yrs; n=49 aged 50-80 yrs) completed a TM protocol (53.6, 67.0, 80.4, 93.8, and 107.2 m/min, five minutes for each speed) and an OG walking protocol (self-determined "< normal", "normal", and "> normal" walking speeds) while wearing two waist-mounted uploadable pedometers (Omron HJ-720ITC [OM] and Kenz Lifecorder EX [LC]). Actual steps were manually tallied by a researcher. During the 24 hr period, participants wore a New Lifestyles-1000 (NL) pedometer (standard of care) attached to a belt at waist level over the midline of the left thigh, in addition to the LC on the belt over the midline of the right thigh. The following day, the same procedure was conducted, replacing the LC with the OM. One-sample t-tests were performed to compare measured and manually tallied steps during the TM and OG protocols, and between steps quantified by the NL with that of the OM and LC during the 24 hr period. Mean error step scores (MES, criterion - device) and 95% Limits of Agreement (LoA) were calculated.Results: There were no significant differences between the OM and tallied steps for any of the TM speeds for either the young or older adult groups. The LC significantly underestimated steps for the young adult group during the 53.6 m/min TM speed (MES 31.4 [14.5, 48.3]) and during the OG < normal walking speed (MES 12.0 [0.9, 23.1] (p