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The Accuracy of Pedometers in Measuring Walking Steps on a Treadmill in College Students

机译：计步器在大学生跑步机上步行步数测量的准确性

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International Journal of Exercise Science 10(1): 146-153, 2017. Pedometers are a popular way for people to track if they have reached the recommended 10,000 daily steps. Therefore, the purpose of this study was to determine the accuracy of four brands of pedometers at measuring steps, and to determine if a relationship exists between pedometer cost and accuracy. The hypothesis was that the more expensive brands of pedometers (the Fitbit Charge™ and Omron HJ-303™) would yield more accurate step counts than less expensive brands (the SmartHealth – Walking FIT™ and Sportline™). While wearing all pedometers at once, one male and eleven female college students (mean ± SD; age = 20.8 ± 0.94 years) walked 400 meters on a treadmill for 5 minutes at 3.5 miles per hour. The pedometer step counts were recorded at the end. Video analysis of the participants’ feet was later completed to count the number of steps actually taken (actual steps). When compared to the actual steps, the Sportline™ brand (-3.83 ± 22.05) was the only pedometer that was significantly similar. The other three brands significantly under-estimated steps (Fitbit™ 55.00 ± 42.58, SmartHealth™ 43.50 ± 49.71, and Omron™ 28.58 ± 33.86), with the Fitbit being the least accurate. These results suggest an inverse relationship between cost and accuracy for the four specific brands tested, and that waist pedometers are more accurate than wrist pedometers. The results concerning the Fitbit are striking considering its high cost and popularity among consumers today. Further research should be conducted to improve the accuracy of pedometers.
机译：国际运动科学杂志10（1）：146-153，2017年。计步器是人们追踪是否已达到建议的每日10,000步的一种流行方式。因此，本研究的目的是确定四个品牌的计步器在测量步骤中的准确性，并确定在计步器成本和准确性之间是否存在关系。假设是，较便宜的品牌计步器（Fitbit Charge™和Omron HJ-303™）将比更便宜的品牌（SmartHealth – Walking FIT™和Sportline™）产生更准确的步数。一次佩戴所有计步器时，一男和十一女大学生（平均±SD；年龄= 20.8±0.94岁）在跑步机上以每小时3.5英里的速度走了400米5分钟。最后记录计步器的步数。随后完成了对参与者脚部的视频分析，以计算实际采取的步数（实际步数）。与实际步骤进行比较时，Sportline™品牌（-3.83±22.05）是唯一明显相似的计步器。其他三个品牌的步长被低估了（Fitbit™55.00±42.58，SmartHealth™43.50±49.71和Omron™28.58±33.86），而Fitbit的准确性最低。这些结果表明，四个被测品牌的成本和准确性之间存在反比关系，并且腰部计步器比手腕计步器更准确。考虑到Fitbit的高成本和今天在消费者中的受欢迎程度，有关结果令人震惊。应该进行进一步的研究以提高计步器的准确性。

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