Pedometry methods for assessing free-living youth
Tudor-Locke, Catrine , McClain, James J. , Hart, Teresa L. , Sisson, Susan B. , & Washington, Tracy L. (2009) Pedometry methods for assessing free-living youth. Research Quarterly for Exercise and Sport, 80(2), pp. 175-184.
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The purpose of this review is to integrate and summarize specific measurement topics (instrument and metric choice, validity, reliability, how many and what types of days, reactivity, and data treatment) appropriate to the study of youth physical activity. Research quality pedometers are necessary to aid interpretation of steps per day collected in a range of young populations under a variety of circumstances. Steps per day is the most appropriate metric choice, but steps per minute can be used to interpret time-in-intensity in specifically delimited time periods (e.g., physical education class). Reported intraclass correlations (ICC) have ranged from .65 over 2 days (although higher values also have been reported for 2 days) to .87 over 8 days (although higher values have been reported for fewer days). Reported ICCs are lower on weekend days (.59) versus weekdays (.75) and lower over vacation days (.69) versus school days (.74). There is no objective evidence of reactivity at this time. Data treatment includes (a) identifying and addressing missing values, (b) identifying outliers and reducing data appropriately if necessary, and (c) transforming the data as required in preparation for inferential analysis. As more pedometry studies in young populations are published, these preliminary methodological recommendations should be modified and refined.
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|Item Type:||Journal Article|
|Keywords:||youth physical activity, pedometers, intraclass correlations (ICC)|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > HUMAN MOVEMENT AND SPORTS SCIENCE (110600)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health|
Current > Schools > School of Exercise & Nutrition Sciences
|Copyright Owner:||Copyright 2009 American Alliance for Health, Physical Education, Recreation & Dance|
|Deposited On:||11 Apr 2011 10:36|
|Last Modified:||04 Mar 2012 04:12|
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