The relationship between sleep duration and activities of daily living (ADL) disability in the Chinese oldest-old: A cross-sectional study

Wang, Zhaoping; Ni, Xiaolin; Gao, Danni; Fang, Sihang; Huang, Xiuqing; Jiang, Mingjun; Zhou, Qian; Sun, Liang; Zhu, Xiaoquan; Su, Huabin; Huang, Bin; Lv, Yuan; Pang, Guofang; Hu, Caiyou; Yang, Ze; Yuan, Huiping

doi:10.7717/peerj.14856

Cited by 5 publications

(8 citation statements)

References 68 publications

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“…Sleep duration of 6-8 h was connected with the lowest risk of death in a study comprising 116,632 adults, while the optimal amount of sleep duration was roughly 7 h (50). However, one recent study supporting our findings has also highlighted that two more hours of sleep may be advantageous for older adults' daily activities (48). In addition, the impact of baseline and deteriorating frailty states on the increased severity of depression symptoms can be exacerbated by short sleep duration (51), which partly validated our results.…”

Section: Discussionsupporting

confidence: 87%

Relationship between frailty and depressive symptoms in older adults: role of activities of daily living and sleep duration

Song,

Liu,

et al. 2024

Front. Med.

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IntroductionPrevious studies have demonstrated that frailty is associated with depressive symptoms among older people and significantly increase the risk of difficulty in activities of daily living (ADL). However, uncertainties remain regarding the mechanisms behind such relationship. The aim of this study was to investigate the mediating effect of ADL in the relationship between frailty and depressive symptoms among older adults in China, and to explore to what extend sleep duration moderated the association between ADL and depressive symptoms.MethodsIn this study, we carried out cross-sectional descriptive analysis and 1,429 participants were included in the analysis. A survey was conducted using questionnaires and instruments measuring frailty, depressive symptoms, ADL and sleep duration. Bootstrap analyses served to explore the impact of ADL in mediating frailty and depressed symptoms, as well as the effect of sleep duration in moderating ADL and depressive symptoms.ResultsCompared to the robust group, the mediating effects of ADL between frailty and depressive symptoms were significant in the prefrail group and the frail group. The interaction term between sleep duration and ADL was significantly presented in the regression on depressive symptoms. Specifically, the Johnson–Neyman technique determined a range from 8.31 to 10.19 h for sleep duration, within which the detrimental effect of frailty on depressive symptoms was offset.ConclusionSleep duration moderated the indirect effect of ADL on the association between frailty and depressive symptoms. This provides support for unraveling the underlying mechanism of the association between frailty and depressive symptoms. Encouraging older adults to enhance ADL and obtain appropriate sleep duration might improve depressive symptoms for older adults with frailty and prefrailty.

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Section: Discussionsupporting

confidence: 87%

Relationship between frailty and depressive symptoms in older adults: role of activities of daily living and sleep duration

Song,

Liu,

et al. 2024

Front. Med.

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Section: Discussionsupporting

confidence: 87%

“…Obtaining approximately 8 to 10 h of sleep per night can even entirely offset the negative effects of decreased ADL on depressive symptoms. It can be speculated that older adults with long sleep duration may elevate their inflammatory markers, leading to an influence on the impairment of their cognition and motion, thus increasing the possibility of ADL disability and ultimately inducing depressive symptoms (48). Luo et al (49) argued that short and long sleep durations amplified the risk of hypertension among Chinese adults, which might result in cardiovascular diseases that impair senior people's capacity for daily activities.…”

Section: Discussionmentioning

confidence: 99%

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“…Another study focusing on patients with dementia discovered that a longer sleep duration was associated with ADL disability [ 49 ]. Similarly, a cross-sectional study that recruited 1798 participants older than 90 years found that a long sleep duration (≥12 hours) may be associated with an increased risk of ADL disability for this population [ 19 ]. Peng et al [ 50 ] found that after accounting for potential confounders such as age and gender, both longer and shorter sleep durations were linked to a heightened risk of IADL disability, which was consistent with the results of this study.…”

Section: Discussionmentioning

confidence: 99%

Sleep Duration and Functional Disability Among Chinese Older Adults: Cross-Sectional Study

Luo,

Dong,

Fan

et al. 2024

JMIR Aging

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Background The duration of sleep plays a crucial role in the development of physiological functions that impact health. However, little is known about the associations between sleep duration and functional disability among older adults in China. Objective This study aimed to explore the associations between sleep duration and functional disabilities in the older population (aged≥65 years) in China. Methods The data for this cross-sectional study were gathered from respondents 65 years and older who participated in the 2018 survey of the China Health and Retirement Longitudinal Study, an ongoing nationwide longitudinal investigation of Chinese adults. The duration of sleep per night was obtained through face-to-face interviews. Functional disability was assessed according to activities of daily living (ADL) and instrumental activities of daily living (IADL) scales. The association between sleep duration and functional disability was assessed by multivariable generalized linear models. A restricted cubic-spline model was used to explore the dose-response relationship between sleep duration and functional disability. Results In total, 5519 participants (n=2471, 44.77% men) were included in this study with a mean age of 73.67 years, including 2800 (50.73%) respondents with a functional disability, 1978 (35.83%) with ADL disability, and 2299 (41.66%) with IADL disability. After adjusting for potential confounders, the older adults reporting shorter (≤4, 5, or 6 hours) or longer (8, 9, or ≥10 hours) sleep durations per night exhibited a notably increased risk of functional disability compared to that of respondents who reported having 7 hours of sleep per night (all P<.05), which revealed a U-shaped association between sleep duration and dysfunction. When the sleep duration fell below 7 hours, increased sleep duration was associated with a significantly lower risk of functional disability (odds ratio [OR] 0.85, 95% CI 0.79-0.91; P<.001). When the sleep duration exceeded 7 hours, the risk of functional disability associated with a prolonged sleep duration increased (OR 1.16, 95% CI 1.05-1.29; P<.001). Conclusions Sleep durations shorter and longer than 7 hours were associated with a higher risk of functional disability among Chinese adults 65 years and older. Future studies are needed to explore intervention strategies for improving sleep duration with a particular focus on functional disability.

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The relationship between sleep duration and activities of daily living (ADL) disability in the Chinese oldest-old: A cross-sectional study

Cited by 5 publications

References 68 publications

Relationship between frailty and depressive symptoms in older adults: role of activities of daily living and sleep duration

Relationship between frailty and depressive symptoms in older adults: role of activities of daily living and sleep duration

Data_Sheet_1.docx

Sleep Duration and Functional Disability Among Chinese Older Adults: Cross-Sectional Study

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