A Comparison of Two Motion Sensors for the Assessment of Free-Living Physical Activity of Adolescents

International Journal of Environmental Research and Public Health

Roman Cuberek³  Walid El Ansari¹  Karel Frömel³  Krzysztof Skalik² 

[1] Faculty of Sport, Health and Social Care, University of Gloucestershire, Gloucester GL2 9HW, UK; E-Mail:;Academy of Physical Education, Katowice, Poland; E-Mail:;Center for Kinantropology Research, Faculty of Physical Culture, Palacky University in Olomouc, Czech Republic; E-Mails:

关键词: pedometer;    accelerometer;    validity;    monitoring;    measurement;    step counter;    categorization of physical activity;   

DOI  :  10.3390/ijerph7041558

来源: mdpi

【 摘 要 】

This study assessed and compared the daily step counts recorded by two different motion sensors in order to estimate the free-living physical activity of 135 adolescent girls. Each girl concurrently wore a Yamax pedometer and an ActiGraph accelerometer (criterion measure) every day for seven consecutive days. The convergent validity of the pedometer can be considered intermediate when used to measure the step counts in free-living physical activity; but should be considered with caution when used to classify participants’ step counts into corresponding physical activity categories because of a likelihood of ‘erroneous’ classification in comparison with the accelerometer.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.