Comparison of steps and energy expenditure assessment in adults of Fitbit Tracker and Ultra to the Actical and indirect calorimetry

被引：134

作者：

Adam Noah, J. ^{[1
]}

Spierer, David K. ^{[2
]}

Gu, Jialu ^{[3
]}

Bronner, Shaw ^{[4
]}

机构：

[1] Brain Function Laboratory, Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06511

[2] Division of Athletic Training, Health and Exercise Science, School of Health Professions, Long Island University, Brooklyn, NY 11201, One University Plaza

[3] ADAM Center, Department of Physical Therapy, Northeastern University, Boston, MA 02115

来源：

Journal of Medical Engineering and Technology | 2013年 / 37卷 / 07期

关键词：

Accelerometer; Pedometer; Physical activity;

D O I：

10.3109/03091902.2013.831135

中图分类号：

学科分类号：

摘要：

Epidemic levels of inactivity are associated with chronic diseases and rising healthcare costs. To address this, accelerometers have been used to track levels of activity. The Fitbit and Fitbit Ultra are some of the newest commercially available accelerometers. The purpose of this study was to determine the reliability and validity of the Fitbit and Fitbit Ultra. Twenty-three subjects were fitted with two Fitbit and Fitbit Ultra accelerometers, two industry-standard accelerometers and an indirect calorimetry device. Subjects participated in 6-min bouts of treadmill walking, jogging and stair stepping. Results indicate the Fitbit and Fitbit Ultra are reliable and valid for activity monitoring (step counts) and determining energy expenditure while walking and jogging without an incline. The Fitbit and standard accelerometers under-estimated energy expenditure compared to indirect calorimetry for inclined activities. These data suggest the Fitbit and Fitbit Ultra are reliable and valid for monitoring over-ground energy expenditure. © 2013 Informa UK Ltd. All rights reserved: reproduction in whole or part not permitted.

引用

页码：456 / 462

页数：6

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