- Title
- Reliability and validity of a single-item physical activity measure for adolescents
- Creator
- Scott, Joseph J.; Morgan, Philip J.; Plotnikoff, Ronald C.; Lubans, David R.
- Relation
- Journal of Paediatrics and Child Health Vol. 51, Issue 8, p. 787-793
- Publisher Link
- http://dx.doi.org/10.1111/jpc.12836
- Publisher
- Wiley-Blackwell
- Resource Type
- journal article
- Date
- 2015
- Description
- Aims: The aim of this study was to examine the test-retest reliability and concurrent validity of an adolescent single-item physical activity measure by comparing it with the existing Oxford Physical Activity Questionnaire (OPAQ) and accelerometer output. Methods: Participants were 123 adolescents (14.7 ± 0.5 years) from three secondary schools in New South Wales, Australia. To determine reliability, participants completed both questionnaires on two occasions separated by 2 weeks. To assess validity, participants wore Actigraph GT3X₊ accelerometers for a 7-day monitoring period and completed both physical activity questionnaires. Bivariate correlations between self-reported moderate-to-vigorous physical activity (MVPA) and accelerometer MVPA min/day were calculated. Results: The single-item (intra-class correlation coefficient (ICC) = 0.75, 95% confidence interval (CI) = 0.64-0.83, P < 0.001) ) and the OPAQ (ICC = 0.79, 95% CI = 0.69-0.86, P < 0.001) were both found to have moderate-to-strong reliability. Correlations between self-reported and objectively measured MVPA were similar for the single-item measure (r = 0.44, 95% CI = 0.24-0.63, P < 0.001) and the OPAQ (r = 0.50, 95% CI = 0.30-0.65, P < 0.001). Conclusions: These findings suggest the single-item measure can provide a reliable and valid assessment of youth physical activity.
- Subject
- adolescent; physical activity; questionnaire; self-report; youth
- Identifier
- http://hdl.handle.net/1959.13/1335166
- Identifier
- uon:27401
- Identifier
- ISSN:1034-4810
- Language
- eng
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