Relationships between night and day sleep time with cognitive status in older
DOI:
https://doi.org/10.34024/rnc.2022.v30.14011Keywords:
Sleep, Aging, Cognition, Quality of lifeAbstract
Introduction. Cognitive decline and increased risk of dementia are among the main effects of sleep-related disorders in older adults. Objective. To investigate the relationship between daytime and nighttime sleep duration and cognitive status in older adults attending Primary Health Care. Method. A cross-sectional study was carried out with 201 older people treated at three health units randomly selected. Daytime and nighttime sleep time was self-reported. Cognitive status was assessed using the Leganés Cognitive Test, with scores ranging from 0 to 32. The other variables comprised physical and mental health status and sociodemographic aspects. Two multiple linear regression models with 95% confidence intervals were tested. Results. The sample was characterized by being mostly female (77.1%); mean age 68.13±6.88 years; schooling 5.62±4.12 years; and cognitive status 26.52±3.29. The average daytime sleep time was 35.11±76.68 minutes; the mean nighttime sleep was 396.74±94.93 minutes. Daytime and nighttime sleep time were negatively related to cognitive status, regardless of health status and sociodemographic aspects. Conclusion. The guidelines aimed at the older adults should be based on sleep quality, instead of sleep time. The evaluation and intervention in the sleep conditions of older adults attending primary health care are essential to prevent health problems, especially in those who sleep many hours during the night, but mainly throughout the day.
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Copyright (c) 2022 Mariane Migliaccio, Ana Paula Gomes Fernandes , Mariana Thays Carvalho Moreira, Lara Andrade Souza, Juliana Martins Pinto
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Accepted 2022-08-20
Published 2022-09-28
