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|Title: ||What they say and what they do: comparing physical activity across U.S., England, and the Netherlands|
|Authors: ||Kapteyn, Arie|
Smith, James P.
van Soest, Arthur
Htay Wah, Saw
|Keywords: ||Physical activity|
|Issue Date: ||2018|
|Publisher: ||© The Authors. Published by BMJ Publishing Group|
|Citation: ||KAPTEYN, A. ... et al., 2018. What they say and what they do: comparing physical activity across U.S., England, and the Netherlands. Journal of Epidemiology and Community Health, In Press.|
|Abstract: ||Background: Physical Activity (PA) is important for maintaining health, but there are fundamental unanswered questions on how best it should be measured.
Methods: We measured PA in the Netherlands (n=748), United States (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.
Results: The self-reported data showed only minor differences across countries and across groups within countries (such as different age groups or working versus non-working respondents). The accelerometer data, however, showed dramatic differences; the Dutch appeared to be much more physically active than Americans and English (For instance, among respondents 50 or older only 5% of Americans and 3% of English were active enough to make it into the highest activity quintile of the Dutch distribution). In addition, accelerometer data showed a sharp decline of PA with age, while no such pattern was observed in self-reports. The differences between objective measures and self-reports occurred for both types of self-reports.
Conclusion: It is clear that self-reports and objective measures tell vastly different stories suggesting that across countries people use different response scales when answering questions about how physically active they are.|
|Description: ||This paper is in closed access until it is published.|
|Sponsor: ||This research was funded by grants from the National Institute on Aging including R-37AG25529 to James Smith at Rand and R01AG20717 to Arie Kapteyn at USC. Funding for ELSA was provided by the National Institute of Aging (R01AG017644) and a consortium of UK government departments coordinated by the Economic and Social Research Council.|
|Version: ||Accepted for publication|
|Publisher Link: ||http://jech.bmj.com/|
|Appears in Collections:||Closed Access (Sport, Exercise and Health Sciences)|
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