Sarcopenia in Community-Dwelling Oldest Old Is Associated with Disability and Poor Physical Function

Area of Science:

• Gerontology
• Geriatric Medicine
• Epidemiology

Background:

• Sarcopenia is a geriatric syndrome linked to adverse outcomes, with limited research on the oldest old.
• Understanding sarcopenia prevalence and risk factors in this demographic is crucial for targeted interventions.

Purpose of the Study:

• To determine the prevalence of sarcopenia among Chinese community-dwelling adults aged 80 years and older.
• To identify socio-demographic and lifestyle factors associated with sarcopenia.
• To examine the relationship between sarcopenia and disability in activities of daily living (ADL) and physical function.

Main Methods:

• A cross-sectional study was conducted in an urban community in Beijing, China.
• 582 adults aged 80 years and older participated.
• Sarcopenia was assessed using the Asian Working Group for Sarcopenia (AWGS) criteria, with logistic regression used to identify correlates.

Main Results:

• The prevalence of sarcopenia was 26.6% (33.3% in males, 21.7% in females).
• Older age, lower body mass index (BMI), and poorer nutritional status (lower Mini-nutritional assessment scores) were significantly associated with sarcopenia.
• Sarcopenia was independently associated with a two-fold increased odds of disability in ADL and poorer physical function, including lower extremity strength and mobility limitations.

Conclusions:

• Sarcopenia is prevalent in Chinese community-dwelling oldest old individuals.
• Factors such as older age, lower BMI, and poor nutrition are linked to sarcopenia.
• Sarcopenia is a significant predictor of disability and impaired physical function in the oldest old.