Journal
AGE AND AGEING
Volume 44, Issue 4, Pages 691-694Publisher
OXFORD UNIV PRESS
DOI: 10.1093/ageing/afv062
Keywords
physical activity; accelerometry; self-report; questionnaire; 'aged 80 and over'; older people
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Funding
- UK Medical Research Council
- Biotechnology and Biological Sciences Research Council [G0500997]
- Dunhill Medical Trust [R124/0509]
- NHS North of Tyne (Newcastle Primary Care Trust)
- Medical Research Council [G0500997, G0700718, MR/J50001X/1, MR/K006312/1] Funding Source: researchfish
- National Institute for Health Research [NF-SI-0508-10260, SRF-2011-04-017] Funding Source: researchfish
- MRC [MR/K006312/1, MR/J50001X/1, G0500997, G0700718] Funding Source: UKRI
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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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