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

Roman Cuberek, Walid El Ansari, Karel Frömel, Krzysztof Skalik and Erik Sigmund
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Roman Cuberek: Center for Kinantropology Research, Faculty of Physical Culture, Palacky University in Olomouc, Czech Republic
Walid El Ansari: Faculty of Sport, Health and Social Care, University of Gloucestershire, Gloucester GL2 9HW, UK
Karel Frömel: Center for Kinantropology Research, Faculty of Physical Culture, Palacky University in Olomouc, Czech Republic
Krzysztof Skalik: Academy of Physical Education, Katowice, Poland
Erik Sigmund: Center for Kinantropology Research, Faculty of Physical Culture, Palacky University in Olomouc, Czech Republic

IJERPH, 2010, vol. 7, issue 4, 1-19

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 (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2010
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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