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- W2897898654 abstract "Sleep disturbances are prevalent in older adults, particularly those with cognitive impairment. Physical activity is thought to have a beneficial effect on sleep, however, research pertaining to the conditions of activity is minimal. The current study aimed to determine whether sleep quality in older adults at-risk for dementia is related to the intensity (i.e. walking, moderate or vigorous intensity) and the frequency of physical activity. In total, 526 individuals ‘at-risk’ for dementia (mean age = 66.4 years) were recruited through the Healthy Brain Ageing Research Clinic. Subjective sleep quality and physical activity were evaluated using the Pittsburgh Sleep Quality Index and the Active Australia Survey, respectively. Participants also underwent a clinical assessment to determine depressive symptom severity, body mass index (BMI), and medical burden. Poorer subjective sleep quality was associated with lower levels of moderate and total activity and fewer total exercise sessions per week, in particular, fewer sessions of moderate activity. In addition, poorer sleep quality was associated with greater depressive symptoms, higher body mass index, and greater medical burden. A multivariable linear regression demonstrated that the main predictors of poor sleep quality were depressive symptoms (R2=0.26, F(1, 446)=159.2, p=.000) and fewer sessions of moderate physical activity per week (R2=0.27, F(2, 446)=83.2, p=.000). This study demonstrates the necessity for frequent physical activity, as well as the critical relationship between depressive symptoms and sleep disturbance in older-adults at-risk for dementia. This study suggests that changes in mood may underpin the beneficial effects of physical activity on subjective sleep quality. Further research is now required to examine the longitudinal relationship between these factors." @default.
- W2897898654 created "2018-10-26" @default.
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- W2897898654 date "2018-07-01" @default.
- W2897898654 modified "2023-10-16" @default.
- W2897898654 title "P1‐653: UNDERSTANDING THE RELATIONSHIP BETWEEN PHYSICAL ACTIVITY, DEPRESSIVE SYMPTOMS AND SLEEP QUALITY IN OLDER ADULTS AT‐RISK FOR DEMENTIA" @default.
- W2897898654 doi "https://doi.org/10.1016/j.jalz.2018.06.665" @default.
- W2897898654 hasPublicationYear "2018" @default.
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