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首页> 外文期刊>Preventive Medicine: An International Journal Devoted to Practice and Theory >Commercially available pedometers: considerations for accurate step counting.
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Commercially available pedometers: considerations for accurate step counting.

机译：市售计步器：精确计步的注意事项。

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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.
机译：背景。许多市售的计步器数量不足，尤其是在速度较慢的情况下。我们检查了年龄，肥胖和自行选择的步行速度对计步器准确性的影响。我们还比较了慢速行走时压电式计步器和弹簧式计步器的准确性。方法。研究1：259名受试者以两种自行选择的行走速度在电动跑步机上行走。使用弹簧计步器对步数进行计数。研究2：32名受试者在电动跑步机上以慢速行走（1.0-2.6 MPH）的速度行走。使用弹簧杠杆计步器和压电计步器对步数进行计数。结果。研究1：随着年龄，体重和体重指数（BMI）的增加，自选步行速度和计步器准确性降低。精度低于2.0 MPH时为71％，介于2.0和3.0 MPH之间时为74-91％，高于3.0 MPH时为96％。准确度下降最好通过增加年龄来预测。研究2：在1.8至2.0 MPH之间，压电计步器的准确性（> 97％）超过了弹簧杠杆计步器的准确性（52-95％）。即使在1.0 MPH时，压电计步器的精度（56.4 +/- 33.8％）也优于弹簧杠杆计步器（7-20％）。结论。在3.0 MPH的速度下，所测试的所有计步器的准确性均超过96％，但在较慢的步行速度下会降低。对于以较慢的步行速度自然走路的人（例如老年人），我们建议使用更灵敏的（例如压电式）计步器。

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