Dondzila Christopher, Garner Dena
a Department of Movement Science , Grand Valley State University , Allendale , MI , USA ;
b Department of Health, Exercise, and Sport Science, The Citadel , Charleston , SC , USA.
J Med Eng Technol. 2016 Aug;40(6):325-9. doi: 10.1080/03091902.2016.1197978. Epub 2016 Jun 9.
The purpose of this study is to compare the accuracy of wrist-worn, consumer-grade pedometers and earbud sensor technology in quantifying energy expenditure. Nineteen participants (24.6 ± 3.1 years) performed 5 min exercise stages on a treadmill (80.5 m/min, 107.3 m/min, 134.1 m/min and 160.9 m/min) while measuring energy expenditure via the Fitbit Charge pedometer and Jabra Sport Pulse Wireless Earbuds, comparing with indirect calorimetry. Paired samples t-tests were used to calculate differences and Pearson correlations to examine associations between kcals measured from the Fitbit and Jabra earbuds from indirect calorimetry. Results indicate significant underestimations of kcals for both devices at all speeds except one (Jabra earbuds at 107.3 m/min). Moderate correlations were observed for the Fitbit at 107.3 m/min and 107.3 m/min, and 134.1 m/min for the Jabra earbuds. Both devices considerably underestimated kcals, suggesting that caution be used when incorporating such data into fitness/health goals.
本研究的目的是比较腕戴式消费级计步器和耳塞传感器技术在量化能量消耗方面的准确性。19名参与者（24.6±3.1岁）在跑步机上进行5分钟的运动阶段（速度分别为80.5米/分钟、107.3米/分钟、134.1米/分钟和160.9米/分钟），同时通过Fitbit Charge计步器和捷波朗运动脉搏无线耳塞测量能量消耗，并与间接测热法进行比较。采用配对样本t检验计算差异，并使用Pearson相关性分析来检验通过间接测热法从Fitbit和捷波朗耳塞测得的千卡数之间的关联。结果表明，除了一个速度点（捷波朗耳塞在107.3米/分钟时）外，两种设备在所有速度下都显著低估了千卡数。在107.3米/分钟时，Fitbit以及在107.3米/分钟和134.1米/分钟时捷波朗耳塞都观察到了中等程度的相关性。两种设备都大幅低估了千卡数，这表明在将此类数据纳入健身/健康目标时应谨慎使用。
