Age related differences in the validity of the OMNI perceived exertion scale during lifestyle activities

Rice, Kelly, Gammon, Catherine, Pfieffer, Karin, & Trost, Stewart G. (2015) Age related differences in the validity of the OMNI perceived exertion scale during lifestyle activities. Pediatric Exercise Science, 27(1), pp. 95-101.

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The OMNI Perceived Exertion Scale was developed for children to report perceived effort while performing physical activity; however no studies have formally examined age-related differences in validity. This study evaluated the validity of the OMNI-RPE in four age groups performing a range of lifestyle activities.


206 participants were stratified into four age groups: 6-8 years (n = 42), 9-10 years (n = 46), 11-12 years (n = 47), and 13-15 years (n = 71). Heart rate and VO2 were measured during 11 activity trials ranging in intensity from sedentary to vigorous. After each trial, participants reported effort from the OMNI walk/run scale. Concurrent validity was assessed by calculating within-subject correlations between OMNI ratings and the two physiological indices.


The average correlation between OMNI ratings and VO2 was 0.67, 0.77, 0.85 and 0.87 for the 6-8, 9-10, 11-12 and 13-15 y age groups, respectively.


The OMNI RPE scale demonstrated fair to good evidence of validity across a range of lifestyle activities among 6-15 year old children. The validity of the scale appears to be developmentally related with RPE reports closely reflecting physiological responses among children older than 8 years.

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ID Code: 78785
Item Type: Journal Article
Refereed: Yes
DOI: 10.1123/pes.2014-0007
ISSN: 1543-2920
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 > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Exercise & Nutrition Sciences
Copyright Owner: Copyright 2014 Human Kinetics, Inc.
Copyright Statement: As accepted for publication
Deposited On: 19 Nov 2014 22:45
Last Modified: 13 May 2015 00:43

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