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A Comparison of Two Motion Sensors for the Assessment of Free-Living Physical Activity of Adolescents
Center for Kinantropology Research, Faculty of Physical Culture, Palacky University in Olomouc, Czech Republic
Faculty of Sport, Health and Social Care, University of Gloucestershire, Gloucester GL2 9HW, UK
Academy of Physical Education, Katowice, Poland
* Author to whom correspondence should be addressed.
Received: 5 February 2010; in revised form: 16 March 2010 / Accepted: 25 March 2010 / Published: 6 April 2010
Abstract: 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.
Keywords: pedometer; accelerometer; validity; monitoring; measurement; step counter; categorization of physical activity
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Cuberek, R.; El Ansari, W.; Frömel, K.; Skalik, K.; Sigmund, E. A Comparison of Two Motion Sensors for the Assessment of Free-Living Physical Activity of Adolescents. Int. J. Environ. Res. Public Health 2010, 7, 1558-1576.
Cuberek R, El Ansari W, Frömel K, Skalik K, Sigmund E. A Comparison of Two Motion Sensors for the Assessment of Free-Living Physical Activity of Adolescents. International Journal of Environmental Research and Public Health. 2010; 7(4):1558-1576.
Cuberek, Roman; El Ansari, Walid; Frömel, Karel; Skalik, Krzysztof; Sigmund, Erik. 2010. "A Comparison of Two Motion Sensors for the Assessment of Free-Living Physical Activity of Adolescents." Int. J. Environ. Res. Public Health 7, no. 4: 1558-1576.