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ERIC Number: EJ843774
Record Type: Journal
Publication Date: 2007-Dec
Pages: 9
Abstractor: As Provided
Reference Count: 25
ISBN: N/A
ISSN: ISSN-0270-1367
Effects of Age, Walking Speed, and Body Composition on Pedometer Accuracy in Children
Duncan, J. Scott; Schofield, Grant; Duncan, Elizabeth K.; Hinckson, Erica A.
Research Quarterly for Exercise and Sport, v78 n5 p420-428 Dec 2007
The objective of this study was to investigate the effects of age group, walking speed, and body composition on the accuracy of pedometer-determined step counts in children. Eighty-five participants (43 boys, 42 girls), ages 5-7 and 9-11 years, walked on a treadmill for two-minute bouts at speeds of 42, 66, and 90 m[middle dot]min[superscript -1] while wearing a spring-levered (Yamax SW-200) and a piezoelectric (New Lifestyles NL-2000) pedometer. The number of steps taken during each bout was also recorded using a hand counter. Body mass index (BMI) was calculated from height and mass, and percentage of body fat (%BF) was determined using hand-to-foot bioelectrical impedance analysis. The tilt angle of the pedometer was assessed using a magnetic protractor. Both pedometers performed well at 66 and 90 m[middle dot]min[superscript -1], but undercounted steps by approximately 20% at 42 m[middle dot]min[superscript -1]. Although age group, BMI, waist circumference, and %BF did not affect pedometer accuracy, children with large pedometer tilt angles ([greater than or equal to] 10[degrees]) showed significantly greater percent bias than those with small tilt angles (less than 10[degrees]). We suggest that the style of waistband on the child's clothing is a more important determinant of tilt angle and thus pedometer accuracy than body composition. Our results also indicate that the NL-2000 pedometer provides similar accuracy and better precision than the SW-200 pedometer, especially in children with large tilt angles. We conclude that fastening pedometers to a firm elastic belt may improve stability and reduce undercounting in young people. (Contains 4 figures and 2 tables.)
American Alliance for Health, Physical Education, Recreation and Dance. 1900 Association Drive, Reston, VA 20191. Tel: 800-213-7193; Fax: 703-476-9527; e-mail: info@aahperd.org; Web site: http://www.aahperd.org
Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Education; Grade 1; Grade 2; Grade 5; Grade 6
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: New Zealand