Associations Between Self-Reported Sleep Duration and Sarcopenia in Community-Dwelling Older Adults

Study Overview
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Brief Summary
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BACKGROUNDS: Currently, elderly people comprise more than 10% of the total Taiwanese population. However, within the context of self-reported sleep duration and health risks, research into the association between sleep duration and body composition changes in older people is limited. It is important to gain an understanding of such an association of older people to estimate the public health burden. OBJECTIVES: To assess the association between self-reported sleep duration and sarcopenia as well as obesity in community-dwelling older adults. HYPOTHESIS: Self-reported sleep duration is associated with prevalence of sarcopenia and obesity in community-dwelling older adults. DESIGN: A cross-sectional investigation. SETTING: Communities in Zhongzheng district, Taipei. PARTICIPANTS: Four hundred and forty-eight community-dwelling adults (224 men and 264 women) aged 65 years and older. MEASUREMENTS: The investigators evaluated self-reported sleep duration by deriving from the Pittsburgh Sleep Quality Index and 7-d recall physical activity diary. Skeletal muscle mass was estimated by the predicted equation from a bioelectrical impedance analysis measurement. The Groningen Activity Restriction Scale and the Chinese Geriatric Depression Screening Scale were used to evaluate physical disability and depression, respectively.

Official Title
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Associations Between Self-Reported Sleep Duration and Sarcopenia in Community-Dwelling Older Adults

Conditions
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Community-Based Participatory Research, Aged, Sleep, Body Composition

Participation Criteria
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Eligibility Criteria
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hyper- or hypothyroidism. taking prescribed medications (such as growth hormone, testosterone, or progesterone) known to alter body composition. any condition that prevented them from completing our questionnaires or the functional capacity test (e.g., amputee, nonambulatory even with the use of a walker or a cane, blind, or deaf).

Ages Eligible for Study
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Minimum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Skeletal muscle mass index | Using Bioelectrical Impedance Analysis to measure skeletal muscle mass (kg) and further calculate skeletal muscle mass index to investigate the prevalence of sarcopenia. | one day | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Sleep quality | Using Pittsburgh Sleep Quality Index to record the sleep quality | one day | 
| Level of physical activity | Using 7-d recall physical activity questionnaire to evaluate general physical activity in the past 7 days. | one day | 
| Sleep duration | Recording the sleep time at night and daytime napping separately. | one day | 
| Body composition | Using Bioelectrical Impedance Analysis to measure fat percentage in all subjects. | one day | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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sarcopenia, sleep duration, body composition, skeletal muscle