Cardiovascular fitness is associated with bias between self-reported and objectively measured physical activity
Article
Article Title | Cardiovascular fitness is associated with bias between self-reported and objectively measured physical activity |
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ERA Journal ID | 9751 |
Article Category | Article |
Authors | Tomaz, S. A. (Author), Lambert, E. V. (Author), Karpul, D. (Author) and Kolbe-Alexander, T. L. (Author) |
Journal Title | European Journal of Sport Science |
Journal Citation | 16 (1), pp. 149-157 |
Number of Pages | 9 |
Year | 2016 |
Publisher | Taylor & Francis |
Place of Publication | United Kingdom |
ISSN | 1536-7290 |
1746-1391 | |
Digital Object Identifier (DOI) | https://doi.org/10.1080/17461391.2014.987323 |
Web Address (URL) | http://www.tandfonline.com/doi/full/10.1080/17461391.2014.987323 |
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. |
Keywords | accelerometer, ActiGraph GT3X, GPAQ, physical activity |
ANZSRC Field of Research 2020 | 420799. Sports science and exercise not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Cape Town, South Africa |
Institution of Origin | University of Southern Queensland |
Funding source | Grant ID University of Cape Town, start up grant awared to T Kolbe-Alexander |
https://research.usq.edu.au/item/q3xy5/cardiovascular-fitness-is-associated-with-bias-between-self-reported-and-objectively-measured-physical-activity
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