2018
DOI: 10.1136/jech-2017-209703
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What they say and what they do: comparing physical activity across the USA, England and the Netherlands

Abstract: BackgroundPhysical activity (PA) is important for maintaining health, but there are fundamental unanswered questions on how best it should be measured.MethodsWe measured PA in the Netherlands (n=748), the USA (n=540) and England (n=254), both by a 7 day wrist-worn accelerometer and by self-reports. The self-reports included a global self-report on PA and a report on the frequency of vigorous, moderate and mild activity.ResultsThe self-reported data showed only minor differences across countries and across grou… Show more

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Cited by 61 publications
(46 citation statements)
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“…For example, previous evidence has shown that men and those of lower education were more likely to overestimate their physical activity levels than women and those with higher education, respectively 49. Differential reporting bias across population sub groups50 could therefore bias our finding of effect modification. Insofar as objective measurements of physical activity are able to capture domain-specific activity, they may be useful to include in future studies to help verify our findings.…”
Section: Discussionmentioning
confidence: 87%
“…For example, previous evidence has shown that men and those of lower education were more likely to overestimate their physical activity levels than women and those with higher education, respectively 49. Differential reporting bias across population sub groups50 could therefore bias our finding of effect modification. Insofar as objective measurements of physical activity are able to capture domain-specific activity, they may be useful to include in future studies to help verify our findings.…”
Section: Discussionmentioning
confidence: 87%
“…Physical activity levels in people with hip-related pain should be measured to determine their baseline activity, fluctuations with symptoms, and change over time, or in response to intervention. Substantial discrepancies exist between self-reported physical activity levels (using self-report questionnaires) and objective methods of measuring physical activity 25. Self-report data are hampered by reporting bias, and inadequate reliability and validity compared with objective methods, such as body-worn accelerometers 26.…”
Section: Discussionmentioning
confidence: 99%
“…However, the placement, location and design of an accelerometer may limit the type of physical activity that can be captured 27. Self-reported measures also capture different dimensions of physical activity than objective measures,25 28 as well as the person’s response to physical activity (eg, muscle soreness, general fatigue, and so on).…”
Section: Discussionmentioning
confidence: 99%
“…In the present study, subjective physical activity correlated significantly with an objective assessment via actigraphy (see Appendix S1). However, subjective and objective assessment of physical activity might not always be in accordance with various between-person influences (Kapteyn et al, 2018;Prince et al, 2008). Therefore, research is needed examining the divergence and coherence between subjective and objective assessment of physical activity and the effects with stress and emotions (Pannicke et al, submitted).…”
Section: Limitationsmentioning
confidence: 99%