Cognitive function and its associations in older adults from Amazonas, Brazil / Função Cognitiva e suas associações em adultos-idosos do estado do Amazonas, Brasil

The objectives of this study were: (1) to investigate the age-related differences in cognitive function (CF), nutritional status (MNA), physical activity (AF), quality of life (QoL), depression, social sat-isfaction (SS) and socioeconomic status (SES), and (2) to explore the relationships between CF and the previous variables. This cross sectional study included 268 men and 433 women (aged 71.4 ± 7.0 years). CF was determined with the Cognitive Telephone Screening Instrument (COGTEL) and the Mini-Mental State Examination (MMSE). Correlates were as follows: Mini Nutritional Assessment (MNA), PA (Baecke questionnaire modified for older adults), Quality of life (QoL SF-12), Geriatrics Depression Scale (GDS), Satisfaction and Social Support Scale, and Socioeconomic status (SES). All instruments were applied in a face to face interview. An independent t-test identi-fied significantly higher scores in young-old adults (≤ 69 years) for CF (p < 0.001), PA (p= 0.046) and SES (p= 0.007), compared to old-old adults (≥ 70 years). The results of multiple linear regression analysis indicated that the most significant CF correlates were SES (ß = 0.45;p< 0.001), age (ß = -0.12;p< 0.001), SS (ß = 0.12;p= 0.001), GDS (ß = -0.11; p= 0.003) and QoL (ß = 0.08;p= 0.017). The overall regression model explained 36% of the total variance in the COGTEL. The oldest and the more depressed adults obtained lower scores for FC. The present study suggests that, between the correlates studied, SES was the strongest predictor in the explanation of CF in older adults

Os objetivos deste estudo foram: (1) investigar as diferenças associadas à idade na função cognitiva (FC), status nutricional (MNA), atividade física (AF), qualidade de vida (QV ), depressão, satisfação social (SS) e estatuto socioeconômico (ESSE), e (2) explorar as relações entre a FC e as varáveis anteriores. Este estudo, de natureza transversal, incluiu 268 homens e 433 mulheres (71,4 ± 7,0 anos de idade). A FC foi determinada a partir do Cognitive Telephone Screening Instrument (COGTEL) e do Mini-Mental State Examination (MMSE). Os preditores analisados incluíram: o Mini Nutritional Assessment (MNA), a AF (questionário de Baecke modificado para idosos), a QV (SF-12), a Escala de Depressão em Geriatria (GDS), a Escala de Satisfação com o Suporte Social e o ESSE (Estatuto Socioeconômico). Todos os instrumentos foram aplicados sob forma de entrevista. Um t-teste de medidas independentes identificou scores significativamente mais elevados nos adultos-idosos mais jovens (60 - 69 anos de idade) na FC (p < 0,001), AF (p = 0,046) e ESSE (p = 0,007), comparativamente aos mais idosos (70 - 91 anos de idade). Os resultados da análise de regressão linear múltipla indicaram que os preditores mais significativos da FC foram: ESSE (ß = 0,45; p < 0,001), idade (ß = -0,12; p < 0,001), SS (ß = 0,12; p = 0,001), GDS (ß = -0,11; p = 0,003) e QV (ß = 0,08; p = 0,017). O modelo de regressão testado, explicou 36% da variância total do COGTEL. As pessoas mais idosas e deprimidas obtiveram scores mais baixos na FC. Este estudo sugere que entre os preditores estudados, o ESSE é a variável mais forte na explicação da FC nos adultos idosos

The relationship of physical activity to high-density lipoprotein cholesterol level in a sample of community-dwelling older adults from Amazonas, Brazil.

OBJECTIVES: (1) To study the relation of physical activity (PA) to high-density lipoprotein cholesterol (HDL-C) and (2) to investigate if the strength of these associations holds after adjustments for sex, age, and other key correlates. METHODS: This study included 550 older adults from Amazonas. HDL-C was derived from fasting blood samples. PA at sport and leisure, smoking, alcohol consumption, and socioeconomic status (SES) were interviewed. Waist circumference (WACI) was assessed. RESULTS: HDL-C was positively related to PA sport, PA leisure, and SES (0.22≤r≤0.34; p≤0.001) and negatively related to smoking and WACI (r≤-0.10; p<0.05). Controlling for sex and age did not affect these relationships. Hierarchical multiple regression analyses showed that the relation of HDL-C to PA sport and leisure remained significant when controlling for all other investigated correlates (0.14≤ß≤0.24; p≤0.001). DISCUSSION: In order to prevent low HDL-C in older adults, promoting PA seems to be an important additional component besides common recommendations concerning weight reduction.