The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.

<h4>Background</h4>Factors contributing to the accurate measurement of self-reported physical activity are not well understood in middle-aged adults. We investigated the associations between two self-reported surveys and objectively measured physical activity in middle-aged adults, and t...

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Autores principales:	Clare Quinlan, Ben Rattray, Disa Pryor, Joseph M Northey, Kaarin J Anstey, Peter Butterworth, Nicolas Cherbuin
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/64c8cb48f46f472c8a22aea25b757e5e
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spelling	oai:doaj.org-article:64c8cb48f46f472c8a22aea25b757e5e2021-12-02T20:18:22ZThe accuracy of self-reported physical activity questionnaires varies with sex and body mass index.1932-620310.1371/journal.pone.0256008https://doaj.org/article/64c8cb48f46f472c8a22aea25b757e5e2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256008https://doaj.org/toc/1932-6203<h4>Background</h4>Factors contributing to the accurate measurement of self-reported physical activity are not well understood in middle-aged adults. We investigated the associations between two self-reported surveys and objectively measured physical activity in middle-aged adults, and the influence of individual and sociodemographic factors on these associations, at different intensities utilizing an observational study design.<h4>Methods</h4>Participants (n = 156) wore a SenseWear Armband™ (SWA) for a continuous seven-day period over the triceps of the left arm, to measure energy expenditure in metabolic equivalents. Participants also completed the Physical Activity Recall questionnaire (PAR) and Active Australia Survey (AAS). Associations were analyzed separately in general linear models for each intensity. The influence of individual and sociodemographic factors was assessed through moderator analyses.<h4>Results</h4>The PAR and SWA were significantly positively associated at moderate (β = 0.68, 95% CI 0.16-1.20), vigorous (β = 0.36, 95% CI 0.20-0.53), moderate-to-vigorous physical activity (MVPA) (β = 0.52, 95% CI 0.20-0.83), and total METmins (β = 0.63, 95% CI 0.35-0.90), the AAS and SWA were associated at all intensities (moderate (β = 0.41, 95% CI 0.15-0.67), vigorous (β = 0.32, 95% CI 0.19-0.46), MVPA (β = 0.42, 95% CI 0.18-0.65) and total METmins (β = 0.62, 95% CI 0.29-0.96). A significant interaction between the PAR and sex for vigorous-intensity unveiled a weaker association in women. Both surveys tended to under-report physical activity. The largest margins of error were present at light and moderate intensities. For the PAR, participants reported over 20 hours, or 69% less light physical activity than recorded by the SWA per week. For the AAS, participants reported over 7 hours, or 38% less moderate physical activity. Compared to lighter intensities, time spent at a vigorous intensity was overreported by participants with the PAR and AAS by 91 and 43 minutes per week, respectively. The addition of Body Mass Index (BMI) resulted in non-significant interactions between the PAR and SWA for moderate-intensity, and the AAS and SWA for vigorous-intensity; a significant interaction between AAS and BMI indicated that the strength of the association differed by BMI for vigorous-intensity.<h4>Conclusions</h4>The PAR and AAS are not equivalent to the SWA, and sex and BMI may alter the associations between the measures.Clare QuinlanBen RattrayDisa PryorJoseph M NortheyKaarin J AnsteyPeter ButterworthNicolas CherbuinPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0256008 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Clare Quinlan Ben Rattray Disa Pryor Joseph M Northey Kaarin J Anstey Peter Butterworth Nicolas Cherbuin The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.
description	<h4>Background</h4>Factors contributing to the accurate measurement of self-reported physical activity are not well understood in middle-aged adults. We investigated the associations between two self-reported surveys and objectively measured physical activity in middle-aged adults, and the influence of individual and sociodemographic factors on these associations, at different intensities utilizing an observational study design.<h4>Methods</h4>Participants (n = 156) wore a SenseWear Armband™ (SWA) for a continuous seven-day period over the triceps of the left arm, to measure energy expenditure in metabolic equivalents. Participants also completed the Physical Activity Recall questionnaire (PAR) and Active Australia Survey (AAS). Associations were analyzed separately in general linear models for each intensity. The influence of individual and sociodemographic factors was assessed through moderator analyses.<h4>Results</h4>The PAR and SWA were significantly positively associated at moderate (β = 0.68, 95% CI 0.16-1.20), vigorous (β = 0.36, 95% CI 0.20-0.53), moderate-to-vigorous physical activity (MVPA) (β = 0.52, 95% CI 0.20-0.83), and total METmins (β = 0.63, 95% CI 0.35-0.90), the AAS and SWA were associated at all intensities (moderate (β = 0.41, 95% CI 0.15-0.67), vigorous (β = 0.32, 95% CI 0.19-0.46), MVPA (β = 0.42, 95% CI 0.18-0.65) and total METmins (β = 0.62, 95% CI 0.29-0.96). A significant interaction between the PAR and sex for vigorous-intensity unveiled a weaker association in women. Both surveys tended to under-report physical activity. The largest margins of error were present at light and moderate intensities. For the PAR, participants reported over 20 hours, or 69% less light physical activity than recorded by the SWA per week. For the AAS, participants reported over 7 hours, or 38% less moderate physical activity. Compared to lighter intensities, time spent at a vigorous intensity was overreported by participants with the PAR and AAS by 91 and 43 minutes per week, respectively. The addition of Body Mass Index (BMI) resulted in non-significant interactions between the PAR and SWA for moderate-intensity, and the AAS and SWA for vigorous-intensity; a significant interaction between AAS and BMI indicated that the strength of the association differed by BMI for vigorous-intensity.<h4>Conclusions</h4>The PAR and AAS are not equivalent to the SWA, and sex and BMI may alter the associations between the measures.
format	article
author	Clare Quinlan Ben Rattray Disa Pryor Joseph M Northey Kaarin J Anstey Peter Butterworth Nicolas Cherbuin
author_facet	Clare Quinlan Ben Rattray Disa Pryor Joseph M Northey Kaarin J Anstey Peter Butterworth Nicolas Cherbuin
author_sort	Clare Quinlan
title	The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.
title_short	The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.
title_full	The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.
title_fullStr	The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.
title_full_unstemmed	The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.
title_sort	accuracy of self-reported physical activity questionnaires varies with sex and body mass index.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/64c8cb48f46f472c8a22aea25b757e5e
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The accuracy of self-reported physical activity questionnaires varies with sex and body mass index.

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