Arafa, A;
Eshak, ES;
Shirai, K;
Cadar, D;
Iso, H;
Tsuji, T;
Kanamori, S;
(2021)
Impact of various intensities and frequencies of non-occupational physical activity on the risk of dementia among physically independent older adults: the Japan Gerontological Evaluation Study.
Public Health
, 196
pp. 204-210.
10.1016/j.puhe.2021.05.022.
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Abstract
Objectives: The aim of this study was to investigate the association between different intensities and frequencies of non-occupational physical activity (PA) and the risk of dementia among Japanese older adults. / Study design: This was a prospective cohort study. / Methods: A total of 2194 participants aged ≥65 years from the Japan Gerontological Evaluation Study were followed up between 2010 and 2016. The standardised dementia scale of the long-term care insurance system was used to identify incident dementia, whereas non-occupational PA (<2 or ≥2 times/week on each intensity: light, moderate and vigorous) was assessed using a questionnaire. Cox regression was used to compute the hazard ratios (HRs) and 95% confidence intervals (CIs) for incident dementia. / Results: After adjustment for sociodemographic and medical characteristics, the following frequencies and intensities of non-occupational PA, compared with no non-occupational PA at all, were associated with a reduced risk of dementia: light PA ≥2 times/week (HR = 0.61, 95% CI: 0.38–0.97), moderate PA <2 times/week (HR = 0.46, 95% CI: 0.28–0.76), moderate PA ≥2 times/week (HR = 0.57, 95% CI: 0.36–0.91), vigorous PA <2 times/week (HR = 0.40, 95% CI: 0.21–0.74) and vigorous PA ≥2 times/week (HR = 0.29, 95% CI: 0.15–0.57). In the sex-specific analysis, moderate PA <2 times/week and vigorous PA ≥2 times/week were associated with a reduced risk of dementia in men, whereas light and moderate PA ≥2 times/week and all frequencies of vigorous PA were associated with a reduced risk of dementia in women. / Conclusions: Practicing non-occupational PA was associated with a reduced risk of dementia among Japanese older adults.
| Type: | Article |
|---|---|
| Title: | Impact of various intensities and frequencies of non-occupational physical activity on the risk of dementia among physically independent older adults: the Japan Gerontological Evaluation Study |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.puhe.2021.05.022 |
| Publisher version: | https://doi.org/10.1016/j.puhe.2021.05.022 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Older adults, Physical activity, Dementia, Cohort study |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Epidemiology and Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Epidemiology and Health > Behavioural Science and Health |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10131790 |
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