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A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study

Background: Little is known about physical activity (PA) in the very old, the fastest growing age group in the population. We aimed to examine the convergent validity of subjective and objective measures of PA in adults aged over 85 years. Methods: A total of 484 participants aged 87–89 years recrui...

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Autores principales: Innerd, Paul, Catt, Michael, Collerton, Joanna, Davies, Karen, Trenell, Michael, Kirkwood, Thomas B. L., Jagger, Carol
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4476851/
https://www.ncbi.nlm.nih.gov/pubmed/26018999
http://dx.doi.org/10.1093/ageing/afv062
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author Innerd, Paul
Catt, Michael
Collerton, Joanna
Davies, Karen
Trenell, Michael
Kirkwood, Thomas B. L.
Jagger, Carol
author_facet Innerd, Paul
Catt, Michael
Collerton, Joanna
Davies, Karen
Trenell, Michael
Kirkwood, Thomas B. L.
Jagger, Carol
author_sort Innerd, Paul
collection PubMed
description Background: Little is known about physical activity (PA) in the very old, the fastest growing age group in the population. We aimed to examine the convergent validity of subjective and objective measures of PA in adults aged over 85 years. Methods: A total of 484 participants aged 87–89 years recruited to the Newcastle 85+ study completed a purpose-designed physical activity questionnaire (PAQ), which categorised participants as mildly active, moderately active and very active. Out of them, 337 participants wore a triaxial, raw accelerometer on the right wrist over a 5–7-day period to obtain objective measures of rest/activity, PA intensity and PA type. Data from subjective and objective measurement methods were compared. Results: Self-reported PA was significantly associated with objective measures of the daily sedentary time, low-intensity PA and activity type classified as sedentary, activities of daily living and walking. Objective measures of PA were significantly different when low, moderate and high self-reported PA categories were compared (all P < 0.001). Conclusion: The Newcastle 85+ PAQ demonstrated convergent validity with objective measures of PA. Our findings suggest that this PAQ can be used in the very old to rank individuals according to their level of total PA.
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spelling pubmed-44768512015-06-24 A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study Innerd, Paul Catt, Michael Collerton, Joanna Davies, Karen Trenell, Michael Kirkwood, Thomas B. L. Jagger, Carol Age Ageing Short Reports Background: Little is known about physical activity (PA) in the very old, the fastest growing age group in the population. We aimed to examine the convergent validity of subjective and objective measures of PA in adults aged over 85 years. Methods: A total of 484 participants aged 87–89 years recruited to the Newcastle 85+ study completed a purpose-designed physical activity questionnaire (PAQ), which categorised participants as mildly active, moderately active and very active. Out of them, 337 participants wore a triaxial, raw accelerometer on the right wrist over a 5–7-day period to obtain objective measures of rest/activity, PA intensity and PA type. Data from subjective and objective measurement methods were compared. Results: Self-reported PA was significantly associated with objective measures of the daily sedentary time, low-intensity PA and activity type classified as sedentary, activities of daily living and walking. Objective measures of PA were significantly different when low, moderate and high self-reported PA categories were compared (all P < 0.001). Conclusion: The Newcastle 85+ PAQ demonstrated convergent validity with objective measures of PA. Our findings suggest that this PAQ can be used in the very old to rank individuals according to their level of total PA. Oxford University Press 2015-07 2015-05-27 /pmc/articles/PMC4476851/ /pubmed/26018999 http://dx.doi.org/10.1093/ageing/afv062 Text en © The Author 2015. Published by Oxford University Press on behalf of the British Geriatrics Society. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Short Reports
Innerd, Paul
Catt, Michael
Collerton, Joanna
Davies, Karen
Trenell, Michael
Kirkwood, Thomas B. L.
Jagger, Carol
A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study
title A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study
title_full A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study
title_fullStr A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study
title_full_unstemmed A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study
title_short A comparison of subjective and objective measures of physical activity from the Newcastle 85+ study
title_sort comparison of subjective and objective measures of physical activity from the newcastle 85+ study
topic Short Reports
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4476851/
https://www.ncbi.nlm.nih.gov/pubmed/26018999
http://dx.doi.org/10.1093/ageing/afv062
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