25-hydroxyvitamin D in older adults: Which factors really matter?

BACKGROUND AND OBJECTIVES: This study investigated the interaction between a set of factors commonly associated with vitamin D production and nutritional intake and serum 25(OH)D levels among older adults. METHODS: Cross-sectional study on 346 adults over 60 years. Serum 25(OH)D levels were measured following routine biochemical laboratory protocols. Multivariable logistic regression investigated which factors were independently associated with vitamin D deficiency. RESULTS: The prevalence of vitamin D deficiency and insufficiency was 35.3% and 44.2%, respectively. The multivariable logistic regression showed gender and BMI as independent adjustment measures for serum 25(OH)D levels; all other associations were non-significant. CONCLUSIONS: Sex and BMI prevail as principal determinants of serum 25(OH)D levels among older adults. BMI seems to have a more pronounced influence on serum 25(OH)D levels of females compared to males. Healthcare professionals should consider active screening for changes in serum 25(OH)D levels in older obese adults, especially females.

Burden, satisfaction caregiving, and family relations in informal caregivers of older adults.

Introduction: Family caregivers of older persons devote much of their time and energy to caring for another person. This exposure may burden caregivers and compromise their health and quality of life. Objective: To investigate the relationship between burden, sociodemographic, caregiving, and health characteristics of informal caregivers of dependent older adults. Methods: Cross-sectional and analytical study carried out in Palmas, Tocantins, Brazil, with 52 informal caregivers of older persons who need full-time help for basic living activities. Caregivers' burden was assessed by Zarit Burden Interview (ZBI). Data were analyzed using a T-test, Pearson's correlation, and Multiple Linear Regression. Results: The ZBI mean score of caregivers was 26.3 points (SD = 14.6; min = 0; max = 68). Burden scores were higher among caregivers who did not receive help from other people in care (p = 0.016), reported family dysfunction (p = 0.001), and had depression symptoms (p = 0.007). A correlation was found between the scores of burdens and satisfaction with care (r = 0.76; p < 0.001) and perceived material support (r = -0.30; p = 0.40). Satisfaction with care (ß: 0.61; p < 0.001) and family dysfunction (ß: 8.07; p = 0.033) were significantly associated with the burden score. Conclusion: Caregivers with dysfunctional families and satisfaction with the care presented the highest-burden scores. The findings reveal the need for strategies to facilitate mediation and reduce caregiver burden by strengthening the family network support or providing professional assistance.

Are body fat and inflammatory markers independently associated with age-related muscle changes?

BACKGROUND & AIMS: A growing number of studies have shown that body fat and inflammation are associated with age-related changes in body muscle composition. However, most of these studies did not control for potential confounders. The aim was to determine whether there is an association between body fat and inflammatory cytokines with muscle mass/strength decline in community-dwelling older adults. METHODS: Anthropometric, physical and functionality variables were collected. Nutritional status was assessed by the MNA form. Dynapenia was assessed with handgrip strength on the dominant hand using a dynamometer. Sarcopenia was determined using adapted criteria from the European Working Group on Sarcopenia in Older People 2 (EWGSOP2). Inflammatory cytokines were evaluated in plasma using a multiplex assay. Associations to muscle mass/strength decline were analyzed using a multinominal logistic regression, adjusted for potential confounders. RESULTS: We recruited a convenience sample of 311 adults aged 60 years or older. Most of subjects were sufficiently active females with a median age of 68 years (interquartile range [IQR], 64-74 years), whereas about a half (46.3%) were at risk of malnutrition. The prevalence of dynapenia was 38.3%, whereas sarcopenia was 13.2%. After controlling for potential confounders, we found that relative fat mass index is independently associated with sarcopenia. Loss of strength was independently associated only with female sex, lower physical activity, worse nutrition and IL-10/TNF-α ratio, whereas female sex, an insufficiently active lifestyle and relative fat mass index were the key determinants of sarcopenia. CONCLUSIONS: These findings highlight the importance of physical activity and healthy diet as effective interventions to prevent muscle mass/strength decline, and points to IL-10/TNF-α ratio and body fat as independently associated factors for dynapenia and sarcopenia, respectively.

Social and health-related predictors of family function in older spousal caregivers: a cross-sectional study.

Given the benefits of adequate family function for the health and well-being of older adults, it is important to understand what factors predict adequate family function in older people who care for their spouses. OBJECTIVE: Analyse predictors of family function in older spousal caregivers. METHODS: A cross-sectional study design was used to investigate a non-probabilistic sample of 298 older spousal caregivers. Home-based face-to-face interviews were used to evaluate sociodemographic variables and care context, family function (Family APGAR), cognitive function, perceived stress, and depressive symptoms. Data were analysed using multiple logistic regression with stepwise forward method for variable section. RESULTS: Older caregivers having some degree of cognitive impairment (OR=-0.160, 95%CI 0.444-0.579), depressive symptoms (OR=-0.848, 95%CI 0.726-0.992) or high levels of stress (OR=-0.955, 95%CI 0.914-0.999) had overall lower levels of family function. Having more children was linked to approximately 1.3 times higher family function (95%CI 1.080-1.057). CONCLUSION: Stress, depression, cognitive decline, and number of children are predictors of family function and should be considered in social and health care strategies within the family caregiving context.

Dados os benefícios da função familiar adequada para a saúde e o bem-estar de pessoas idosas, é importante compreender quais fatores predizem o funcionamento familiar adequado em pessoas idosas que cuidam de seus cônjuges. OBJETIVO: Analisar preditores de funcionamento familiar em idosos cuidadores de cônjuges idosos. MÉTODOS: Um estudo transversal foi usado para investigar uma amostra não probabilística de 298 cuidadores cônjuges idosos. Foram realizadas entrevistas domiciliares para avaliar variáveis sociodemográficas e situação de cuidado, funcionamento familiar (APGAR familiar), função cognitiva, percepção de estresse e sintomas depressivos. Os dados coletados foram analisados por meio de regressão logística múltipla com método stepwise forward para seleção das variáveis. RESULTADOS: Idosos cuidadores com algum grau de comprometimento cognitivo (OR=-0,160, IC95% 0,444­0,579), sintomas depressivos (OR=-0,848, IC95% 0,726­0,992) ou altos níveis de estresse (OR=-0,955, IC95% 0,914-0,999) tiveram menores níveis de funcionamento familiar. Ter mais filhos esteve relacionado a maiores níveis de funcionamento familiar em aproximadamente 1,3 vez (IC95% 1,080­1,057). CONCLUSÃO: A presença de estresse, depressão, declínio cognitivo e número de filhos são preditores do funcionamento familiar e devem ser considerados como parte de estratégias sociais e de saúde no contexto de cuidado familiar.

Relationship between cognitive processing, language and verbal fluency among elderly individuals.

Some cognitive dimensions, such as attention, memory and executive functions, may decline with age, while other functions remain intact or even improve due to greater life experience. OBJECTIVE: to analyze the relationship between cognitive processing, language and verbal fluency among elderly individuals seen by primary healthcare services located in a city in the interior of São Paulo, Brazil. METHODS: a cross-sectional study with a quantitative method was conducted. A total of 149 elderly individuals were assessed through previously scheduled interviews. Data collection included a questionnaire on sociodemographic data and the Addenbrooke's Cognitive Examination - Revised (ACE-R). Cognitive processing (P300) was assessed using a device that captures potentials elicited in auditory tasks. Descriptive analysis and Spearman's correlation were performed with the level of significance established at 5%. RESULTS: a negative correlation was found between language and P300 latency, while a positive correlation was found between verbal fluency and P300 amplitude. Comprehension and naming tasks showed a negative correlation with latency. The repetition task revealed a positive correlation with P300 amplitude. CONCLUSION: although more extensive testing is needed, these findings suggest that language correlates with P300 latency, whereas verbal fluency correlates with P300 amplitude.

As dimensões cognitivas, como atenção, memória e funções executivas, podem diminuir com a idade, enquanto outras funções permanecem ou até melhoram devido a uma maior experiência de vida. OBJETIVO: analisar a relação entre processamento cognitivo, linguagem e fluência verbal em idosos atendidos em serviços de atenção básica localizados em um município do interior de São Paulo, Brasil. MÉTODOS: estudo transversal, método quantitativo. Um total de 149 idosos foram avaliados por meio de entrevistas previamente agendadas. A coleta de dados incluiu um questionário abordando dados sociodemográficos e o Exame Cognitivo de Addenbrooke - Revisado (ACE-R). O processamento cognitivo (P300) foi avaliado por meio de um dispositivo que capta potenciais elicitados em tarefas auditivas. A análise descritiva e a correlação de Spearman foram realizadas com o nível de significância estabelecido em 5%.\. RESULTADOS: foi encontrada correlação negativa entre a linguagem e a latência do P300 e uma correlação positiva entre a fluência verbal e a amplitude do P300. Tarefas de compreensão e nomeação apresentaram uma correlação negativa com a latência. A tarefa de repetição revelou correlação positiva com a amplitude do P300. CONCLUSÃO: embora testes mais extensos sejam necessários, esses achados sugerem que a correlação de linguagem com a latência e fluência do P300 está correlacionada com a amplitude do P300.