Body composition and functional performance of community-dwelling older adults across age groups
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Abstract
Introduction: Ageing is natural and progressive. This process can involve the presence of comorbidities, changes in body composition, and other limitations such as frailty and decline in functionality. Objective: To analyze the difference in body composition, level of physical activity, nutritional index, and functional performance in older adults of different age groups treated in primary health care. and to evaluate with a regression analysis whether the age factor, body mass index, palm dynamometry classification, and physical activity practice are predictors of the classification of functional tests. Methods: A cross-sectional study of older adults in Family Health Centers in Goiânia. 539 older adults were divided into 3 groups by age: group 1: 60-69 years, group 2: 70-79 years, and group 3: over 80 years. Body composition, performance, and functional independence were assessed using validated questionnaires and tests. Results: A lower body mass index was found in the age groups over 70, and 53% of the sample was considered sedentary, in addition to poor performance in the functional tests and low levels of functional independence, indicating functional risks, especially in the elderly over 80. In the regression analysis, age, body mass index, palm dynamometry score, and physical activity were predictors of low scores in the functional tests. Conclusion: As age advances, there is a gradual change in body composition, levels of functional performance, and functional independence.
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