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

Tomaz, S. A. and Lambert, E. V. and Karpul, D. and Kolbe-Alexander, T. L. (2016) Cardiovascular fitness is associated with bias between self-reported and objectively measured physical activity. European Journal of Sport Science , 16 (1). pp. 149-157. ISSN 1746-1391

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 V_ O2max 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 overreported 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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Health and Wellbeing
Date Deposited: 10 Mar 2017 01:27
Last Modified: 10 Mar 2017 02:03
Uncontrolled Keywords: accelerometer, ActiGraph GT3X, GPAQ, physical activity
Fields of Research : 11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110699 Human Movement and Sports Science not elsewhere classified
Socio-Economic Objective: C Society > 92 Health > 9204 Public Health (excl. Specific Population Health) > 920401 Behaviour and Health
Funding Details:
Identification Number or DOI: 10.1080/17461391.2014.987323
URI: http://eprints.usq.edu.au/id/eprint/30812

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