Schlafdauer und Lebenserwartung: was die Daten wirklich zeigen

<h4>Background</h4>Insomnia, or poor quality of sleep, among older people increasingly affects both physical and psychological health. This study aimed to evaluate the efficacy of physical exercise programs for improving sleep quality in non-hospitalized older adults, <i>via</i> objective methods such as actigraphy and polysomnography.<h4>Methods</h4>A systematic review and meta-analysis was conducted between January 1, 2025 and March 31, 2025 according to the standards of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guide. It has been registered in Prospero with the number CRD420251009838. The following databases were consulted: PubMed, Web of Science, CINAHL Complete and Scopus. The studies included groups of participants with a mean age above 60 years, who presented with sleep problems, insomnia or an interest in improving sleep quality. To assess the quality of the studies, the Rob-2 tool for randomized studies and crossover studies and the critical appraisal of the Joanna Briggs Institute were used.<h4>Results</h4>Seven experimental or quasi-experimental studies with intervention groups and/or controls published in the last decade were analyzed. Interventions included aerobic exercise, resistance training, tai chi, and aquatic activities. The results demonstrated improvements in sleep latency, sleep efficiency, total sleep time, and wake time after sleep onset. Meta-analyses confirmed statistically significant benefits, particularly in

BACKGROUND: The changes of circadian rhythm are very common in older adults, which can lead to decreased quality of life and jeopardize the brain health in the long run. Among all the types of sleep disturbances, poor sleep quality, as a modifiable condition, can greatly affect the daily activities, cognitive functions, quality of life, and even be implicated as a key potential contributing factor in the development of accelerated cognitive decline and prodromal dementia. Consequently, research efforts to understand, and thus potentially model, the effects of sleep quality on cognition and brain during ageing are of great pragmatic values. METHODS: The Hong Kong Cohort of Abnormal Sleep in Ageing Population (HK-ASAP) project is a prospective cohort study recruiting 244 older adults with sleep disturbances. The HK-ASAP study plans to measure sleep quality, brain reserve and cognition at baseline and 2 years. Subjective sleep quality will be assessed by the Pittsburgh Sleep Quality Index (PSQI). Global cognition and domain-specific cognitive functions will be assessed by a comprehensive neuropsychological battery. High-resolution structural magnetic resonance imaging (MRI) data will be acquired and used to quantify the brain reserve, including gray matter volume, cortical thickness and brain age matrices. Saliva samples will be collected for measuring the levels of Aβ40 and Aβ42, and Aβ42/40 ratio. Using the data, we will estimate and compare the sleep quality and its associati

<h4>Background</h4>This study aims to explore the relationship between sleep duration and Activity of Daily Living (ADL) disability among older adults in China. ADL disability severely impacts the quality of life of older adults and is associated with various physical and mental health issues. With the aging population in China, the burden of ADL disability is increasing.<h4>Methods</h4>Data were sourced from the 2018 national follow-up of the Chinese Longitudinal Healthy Longevity Survey (CLHLS), including 9,572 participants aged 65 and above. Sleep duration was assessed via self-reported questionnaire and categorized into short (<7 h), medium (7-8 h), and long (≥9 h). ADL disability was evaluated through Basic Activities of Daily Living (BADL) and Instrumental Activities of Daily Living (IADL). Logistic regression models were used to analyze the relationship between sleep duration and ADL disability, with subgroup analyses conducted to explore differences by gender and physical activity.<h4>Results</h4>The study found a significant non-linear relationship between sleep duration and ADL disability. Compared to older adults with a sleep duration of 7-8 h, those with over 9 h of sleep had a significantly higher risk of BADL and IADL disability (OR = 1.36, OR = 1.35). Subgroup analyses indicated that this relationship existed among older adults of different genders, age, and physical activity levels.<h4>Conclusion</h4>For older adults in China, maintaining a sleep duration of 7