Opposing patterns in self-reported and measured physical activity levels in middle-aged adults

Luo, Jin ORCID: https://orcid.org/0000-0001-5451-9535 and Lee, Raymond (2021) Opposing patterns in self-reported and measured physical activity levels in middle-aged adults. European Journal of Ageing. ISSN 1613-9372

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Physical activity brings significant health benefits to middle-aged adults, although the research to date has been focused on late adulthood. This study aims to examine how ageing affects the self-reported and accelerometer-derived measures of physical activity levels in middle-aged adults. We employed the data recorded in the UK Biobank, and analysed the physical activity levels of 2,998 participants (1381 men and 1617 women), based on self-completion questionnaire and accelerometry measurement of physical activity. We also assessed the musculoskeletal health of the participants using the dual-energy X-ray absorptiometry (DXA) measurements provided by the UK Biobank. Participants were categorised into three groups according to their age: group I younger middle-aged (40 to 49 years), group II older middle-aged (50 to 59 years), and group III oldest middle-aged (60 to 69 years). Self-reported physical activity level increased with age, and was the highest in group III, followed by group II and I (P < 0.05). On the contrary, physical activity measured by accelerometry decreased significantly with age from group I to III (P < 0.05), and the same pertained to the measurements of musculoskeletal health (P < 0.05). It was also shown that middle-aged adults mostly engaged in low and moderate intensity activities. The opposing trends of the self-reported and measured physical activity levels may suggest that middle-aged adults over-report their activity level as they age. They should be aware of the difference between their perceived and actual physical activity levels, and objective measures would be useful to prevent the decline in musculoskeletal health.

Item Type: Article
Identifier: 10.1007/s10433-021-00657-z
Keywords: ageing, middle adulthood, self-reported physical activity, accelerometry, bone, muscle
Subjects: Construction and engineering > Biomedical engineering
Medicine and health > Health promotion and public health
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Depositing User: Jin Luo
Date Deposited: 29 Oct 2021 13:37
Last Modified: 06 Feb 2024 16:07
URI: https://repository.uwl.ac.uk/id/eprint/8388

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