Commercially available pedometers: considerations for accurate step counting
Commercially available pedometers: considerations for accurate step counting
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DOI：
10.1016/j.ypmed.2004.01.032
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发表时间：
2004-08-01
影响因子：
5.1
通讯作者：
Levine, JA
中科院分区：
文献类型：
--
作者：
Melanson, EL;Knoll, JR;Levine, JA
背景许多市售的计步器计数不足，特别是在较慢的速度。我们研究了年龄、肥胖和自行选择的步行速度对计步器准确性的影响。我们还比较了压电式和弹簧式计步器在慢速行走时的准确性。研究1：259名受试者以两种自选的步行速度在电动跑步机上行走。使用弹簧式计步器计算步数。研究2：32名受试者在电动跑步机上以缓慢步行（1.0-2.6 MPH）速度行走。步数采用弹簧式和压电式计步器计算。研究1：自选步行速度和计步器准确性随着年龄、体重和体重指数（BMI）的增加而降低。准确度在2.0 MPH以下为71%，在2.0和3.0 MPH之间为74-91%，在3.0 MPH以上为96%。准确性下降最好通过年龄的增加来预测。研究2：在1.8和2.0 MPH之间，压电式计步器的准确度（> 97%）超过弹簧式计步器（52-95%）。即使在1.0 MPH时，压电式计步器的准确性（56.4 +/- 33.8%）也上级弹簧式计步器（7-20%）。在3.0 MPH的速度下，所有测试的计步器的准确度超过96%，但在较慢的步行速度下会下降。在以较慢的步行速度自然走动的个体中（例如，老年人），我们建议使用更敏感的（例如，压电）计步器。(C)2004年癌症预防研究所和爱思唯尔公司。All rights reserved.
Background. Many commercially available pedometers undercount, especially at slower speeds. We examined the effects of age, obesity, and self-selected walking speed on pedometer accuracy. We also compared the accuracy of piezoelectric and spring-levered pedometers at slow walking speeds.Methods. Study 1: 259 subjects walked on a motorized treadmill at two self-selected walking speeds. Steps were counted using a spring-levered pedometer. Study 2: 32 subjects walked on a motorized treadmill at slow walking (1.0-2.6 MPH) speeds. Steps were counted using spring-levered and piezoelectric pedometers.Results. Study 1: self-selected walking speed and pedometer accuracy decreased with increasing age, weight, and body mass index (BMI). Accuracy was 71% below 2.0 MPH, 74-91% between 2.0 and 3.0 MPH, and 96% above 3.0 MPH. Decreased accuracy was best predicted by increasing age. Study 2: between 1.8 and 2.0 MPH, the accuracy of the piezoelectric pedometer ( > 97%) exceeded that of the spring-levered pedometers (52-95%). Even at 1.0 MPH, accuracy of the piezoelectric pedometer (56.4 +/- 33.8%) was superior to the spring-levered pedometers (7-20%).Conclusion. Accuracy of all pedometers tested exceeded 96% at speeds 3.0 MPH, but decreased at slower walking speeds. In individuals that naturally ambulate at slower walking speeds (e.g., elderly), we recommend the use of more sensitive (e.g., piezoelectric) pedometers. (C) 2004 The Institute For Cancer Prevention and Elsevier Inc. All rights reserved.