Accuracy and reliability of 10 pedometers for measuring steps over a 400-m walk
Accuracy and reliability of 10 pedometers for measuring steps over a 400-m walk
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DOI：
10.1249/01.mss.0000089342.96098.c4
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发表时间：
2003-10-01
期刊：
影响因子：
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通讯作者：
Bassett, DR
中科院分区：
文献类型：
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作者：
Schneider, PL;Crouter, SE;Bassett, DR
目的：本研究的目的是确定以下电子计步器测量步数的准确性和可靠性：Freestyle Pacer Pro（FR）、Kenz Lifecorder（KZ）、New Lifestyles NL-2000（NL）、Omron HJ-105（OM）、俄勒冈州Scientific PE 316 CA（OR）、Sportline 330（SL 330）和345（SL 345）、Walk 4Life LS 2525（WL）。Yamax Digi-Walker SW-701（DW）。研究方法：10名男性（34.7 +/- 12.6岁）（平均值+/- SD）和10名女性（43.1 +/- 19.9岁），BMI范围为19.8至33.6 kg-m（-2），在10个模型中的每一个模型上佩戴两个相同型号的计步器（身体右侧和左侧各一个），绕室外跑道行走400米。以这种方式评估每个模型的四个计步器。一位研究人员记录了实际采取的步骤。结果：KZ、NL.和DW在计算步数方面最准确，显示的值在实际步数的+/-3%范围内。95%的时间。SL 330和OM的准确度最低，显示的数值在实际步长的+/-37%范围内。95%的时间。除SL 330外，所有计步器的单个模型内的可靠性（Cronbach α）均>0.80。KZ、OM的模型内信度非常高（>0.99）。和DW。结论：由于模型之间在内部机制和灵敏度方面存在差异，并非所有计步器都能准确计数步数。因此，对于使用计步器评估身体活动的研究人员来说，了解其准确性和可靠性非常重要。
Purpose: The purpose of this study was to determine the accuracy and reliability of the following electronic pedometers for measuring steps: Freestyle Pacer Pro (FR), Kenz Lifecorder (KZ), New Lifestyles NL-2000 (NL), Omron HJ-105 (OM), Oregon Scientific PE316CA (OR), Sportline 330 (SL330) and 345 (SL345), Walk4Life LS 2525 (WL). Yamax Skeletone EM-180 (SK), and the Yamax Digi-Walker SW-701 (DW). Methods: Ten males (34.7 +/- 12.6 yr) (mean +/- SD) and 10 females (43.1 +/- 19.9 yr) ranging in BMI from 19.8 to 33.6 kg-m(-2) walked 400-m around an outdoor track while wearing two pedometers of the same model (one on the right and left sides of the body) for each of 10 models. Four pedometers of each model were assessed in this fashion. The actual steps taken were tallied by a researcher. Results: The KZ, NL. and DW were the most accurate in counting steps, displaying values that were within +/-3% of the actual steps taken. 95% of the time. The SL330 and OM were the least accurate, displaying values that were within +/-37% of the actual steps. 95% of the time. The reliability within a single model (Cronbach's alpha) was >0.80 for all pedometers with the exception of the SL330. The intramodel reliability was exceptionally high (>0.99) in the KZ, OM. NL, and the DW. Conclusion: Due to the variation that exists among models in regard to the internal mechanism and sensitivity, not all pedometers count steps accurately. Thus, it is important for researchers who use pedometers to assess physical activity to be aware of their accuracy and reliability.