Cardiovascular fitness is associated with bias between self-reported and objectively measured physical activity

Tomaz, S. A., Lambert, E. V., Karpul, D. and Kolbe-Alexander, T. L. (2014) Cardiovascular fitness is associated with bias between self-reported and objectively measured physical activity. European Journal of Sport Science, 16 1: 149-157. doi:10.1080/17461391.2014.987323


Author Tomaz, S. A.
Lambert, E. V.
Karpul, D.
Kolbe-Alexander, T. L.
Title Cardiovascular fitness is associated with bias between self-reported and objectively measured physical activity
Journal name European Journal of Sport Science   Check publisher's open access policy
ISSN 1536-7290
1746-1391
Publication date 2014-12-24
Year available 2014
Sub-type Article (original research)
DOI 10.1080/17461391.2014.987323
Volume 16
Issue 1
Start page 149
End page 157
Total pages 9
Place of publication Abingdon Oxfordshire United Kingdom
Publisher Taylor & Francis
Collection year 2015
Language eng
Formatted abstract
The aim of this research study was to determine whether the level of agreement between self-reported and objective measures of physical activity (PA) is influenced by cardiovascular fitness. Participants (n = 113) completed the Global Physical Activity Questionnaire (GPAQ), a health risk assessment and a sub-maximal 12-minute step test. Age-predicted VO2 max was used to classify participants as lower fit and higher fit (HF). ActiGraph (GT3X) accelerometers were worn for 7 consecutive days. Matthews cut points were used to calculate minutes of moderate and vigorous PA (MVPA) per week. Bland–Altman plots were used to measure limits of agreement between GPAQ and ActiGraph MVPA. The participants' mean age was 37.9 ± 12.7 years and more than 60% were categorised as HF (n = 71). Moderate PA was over-reported in 39% of all participants. Most of the over-reporters for moderate PA were in the HF group (64.1%). Vigorous PA was over-reported by 72.6% of all participants. The discrepancy between self-reported and objective measures of vigorous PA increased with increasing self-reported time spent in vigorous PA. Fitter individuals appear to over-report PA more than lesser fit participants, suggesting that fitness could influence the level of agreement between self-reported and objective measures of PA.
Keyword Accelerometer
ActiGraph GT3X
GPAQ
Physical activity
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 24 Dec 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Human Movement and Nutrition Sciences Publications
 
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