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BACKGROUND: Considering the interrelationship between the multiple determinants of nutritional status, analyses are needed to estimate direct and mediated effects between the variables that influence body mass index (BMI) in older adults. We aimed to verify the direct and indirect effects of sociodemographic, behavioral and health conditions on the BMI of older adults in the community. METHODS: This is a longitudinal study based on data collection in 2015 and 2020. Descriptive analysis and Structural Equation Modeling were performed, considering p<0.05. RESULTS: The sample consisted of 220 older adults with a mean baseline age of 68.86 years (± 7.10). Direct associations of higher BMI value with younger age, higher monthly family income, greater functional disability to perform instrumental activities of daily living and greater number of morbidities were found. In addition, education, gender, moderate to vigorous physical activity were indirectly associated with high BMI. CONCLUSION: These findings provide insights into the complex relationship of multiple determinants of nutritional status in older adults and support the design of public health policies that consider the specificities of this population group.

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This study aimed to test hypothesized effects of replacing sedentary behavior with moderate-to-vigorous physical activity, sleep, and different domains of physical activity by equivalent amounts on suggestive cognitive decline in an older adult population. This was a cross-sectional study including 473 older adults aged ≥ 60 years. Cognitive decline was assessed using the Mini-Mental Health Examination. Physical activity, its different domains and the time of exposure to sedentary behavior were assessed using the International Physical Activity Questionnaire. For data analysis, two isotemporal substitution models were constructed using Poisson regression. The first model tested the effect of sleep time, sedentary behavior, and moderate-to-vigorous physical activity on cognitive decline. The second model was used to determine the effect of physical activity domains (leisure, work, transport, and home), sleep time, and sedentary behavior on cognitive decline. Physical activity during leisure time was protective against cognitive decline among all domains tested, replacing sedentary behavior, sleep, and transport. Conversely, substitution of the leisure domain for sedentary behavior, sleep, and transport was considered a risk factor for cognitive decline. Leisure time proved to be a strong protective factor in reducing the risk of cognitive decline, and it is necessary to encourage and stimulate public policies that include it.

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BACKGROUND: Compared to young individuals, older adults participate more in sedentary behavior (SB) and less in physical activity (PA). These behaviors are associated with numerous adverse health factors. OBJECTIVE: The purpose of the study was to examine the hypothetical effects of substituting time spent sleeping, performing SB, and performing moderate-to-vigorous physical activity (MVPA) on depressive symptomatology in older adults. DESIGN AND SETTING: An analytical cross-sectional study employing exploratory survey methods was conducted in the city of Alcobaça in the state of Bahia, Brazil. METHODS: The study included 473 older adults who answered a structured questionnaire during an interview. Exposure time to SB and PA level were assessed using the International Physical Activity Questionnaire, and depressive symptoms were analyzed using the short version of the Geriatric Depression Scale. An isotemporal replacement model was used to evaluate the effects of different SB sessions on depressive symptomatology. RESULTS: An increase in the risk of depressive symptoms was observed when MVPA and sleep time were substituted for the same SB time at all times tested, with maximum values of 40% and 20%, respectively. Opposite substitution of MVPA and sleep time increments reduced the risk of depressive symptomatology by 28% and 17%, respectively. CONCLUSIONS: The results of the present study indicate that replacing SB with the same amount of sleep or MVPA may reduce depressive symptoms. The longer the reallocation time, the greater are the benefits.

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ABSTRACT BACKGROUND: Compared to young individuals, older adults participate more in sedentary behavior (SB) and less in physical activity (PA). These behaviors are associated with numerous adverse health factors. OBJECTIVE: The purpose of the study was to examine the hypothetical effects of substituting time spent sleeping, performing SB, and performing moderate-to-vigorous physical activity (MVPA) on depressive symptomatology in older adults. DESIGN AND SETTING: An analytical cross-sectional study employing exploratory survey methods was conducted in the city of Alcobaça in the state of Bahia, Brazil METHODS: The study included 473 older adults who answered a structured questionnaire during an interview. Exposure time to SB and PA level were assessed using the International Physical Activity Questionnaire, and depressive symptoms were analyzed using the short version of the Geriatric Depression Scale. An isotemporal replacement model was used to evaluate the effects of different SB sessions on depressive symptomatology. RESULTS: An increase in the risk of depressive symptoms was observed when MVPA and sleep time were substituted for the same SB time at all times tested, with maximum values of 40% and 20%, respectively. Opposite substitution of MVPA and sleep time increments reduced the risk of depressive symptomatology by 28% and 17%, respectively. CONCLUSIONS: The results of the present study indicate that replacing SB with the same amount of sleep or MVPA may reduce depressive symptoms. The longer the reallocation time, the greater are the benefits.

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Abstract: This study aimed to test hypothesized effects of replacing sedentary behavior with moderate-to-vigorous physical activity, sleep, and different domains of physical activity by equivalent amounts on suggestive cognitive decline in an older adult population. This was a cross-sectional study including 473 older adults aged ≥ 60 years. Cognitive decline was assessed using the Mini-Mental Health Examination. Physical activity, its different domains and the time of exposure to sedentary behavior were assessed using the International Physical Activity Questionnaire. For data analysis, two isotemporal substitution models were constructed using Poisson regression. The first model tested the effect of sleep time, sedentary behavior, and moderate-to-vigorous physical activity on cognitive decline. The second model was used to determine the effect of physical activity domains (leisure, work, transport, and home), sleep time, and sedentary behavior on cognitive decline. Physical activity during leisure time was protective against cognitive decline among all domains tested, replacing sedentary behavior, sleep, and transport. Conversely, substitution of the leisure domain for sedentary behavior, sleep, and transport was considered a risk factor for cognitive decline. Leisure time proved to be a strong protective factor in reducing the risk of cognitive decline, and it is necessary to encourage and stimulate public policies that include it.

Resumo: Este estudo objetivou verificar os efeitos hipotéticos da substituição do comportamento sedentário por atividade física moderada a vigorosa, sono e diferentes domínios da atividade física por quantidades equivalentes sobre o declínio cognitivo em uma população idosa. Trata-se de um estudo transversal, com 473 idosos de ≥ 60 anos. O declínio cognitivo foi avaliado por meio do Mini Exame do Estado Mental. A atividade física, seus diferentes domínios e o tempo de exposição ao comportamento sedentário foram avaliados por meio do Questionário Internacional de Atividade Física. Para a análise dos dados, foram utilizados dois modelos de substituição isotemporal, por meio da regressão de Poisson. O primeiro modelo testou o efeito do tempo de sono, comportamento sedentário e atividade física moderada a vigorosa no declínio cognitivo. O segundo modelo foi utilizado para determinar o efeito dos domínios de atividade física (lazer, trabalho, transporte e casa), tempo de sono e comportamento sedentário no declínio cognitivo. A atividade física no lazer foi um fator protetivo contra declínio cognitivo em todos os domínios testados, substituindo comportamento sedentário, sono e transporte. Por outro lado, a substituição do domínio lazer por comportamento sedentário, sono e transporte foi considerada fator de risco para o declínio cognitivo. O tempo livre mostrou-se um forte fator protetor na redução do risco de declínio cognitivo, sendo necessário incentivar e estimular políticas públicas.

Resumen: Este estudio tuvo como objetivo verificar los efectos hipotéticos al reemplazar el comportamiento sedentario por actividad física de moderada a vigorosa, sueño y diferentes dominios de actividad física por cantidades equivalentes sobre el deterioro cognitivo en una población anciana. Se trata de un estudio transversal, con 473 ancianos ≥ 60 años. El deterioro cognitivo se evaluó mediante el Mini Examen del Estado Mental. La actividad física, sus diferentes dominios y el tiempo de exposición al comportamiento sedentario se evaluaron mediante el Cuestionario Internacional de Actividad Física. Para el análisis de los datos, se utilizaron dos modelos de reemplazo isotemporal, utilizando la regresión de Poisson. El primer modelo probó el efecto del tiempo de sueño, comportamiento sedentario y actividad física de moderada a vigorosa en el deterioro cognitivo. El segundo modelo se utilizó para determinar el efecto de los dominios de actividad física (ocio, trabajo, transporte y hogar), tiempo de sueño y comportamiento sedentario en el deterioro cognitivo. La actividad física en el tiempo libre fue un factor protector contra el deterioro cognitivo en todos los dominios evaluados, reemplazando el comportamiento sedentario, el sueño y el transporte. Por otra parte, reemplazar el dominio del ocio por comportamiento sedentario, sueño y transporte se consideró un factor de riesgo para el deterioro cognitivo. El tiempo libre demostró ser un fuerte factor protector para reducir el riesgo de deterioro cognitivo, por lo que es necesario fomentar y estimular políticas públicas.

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Previous studies have shown that associations between obesity and other comorbidities favor worse outcomes in COVID-19. However, it is not clear how these factors interrelate and whether effects on men and women differ. We conducted an observational, cross-sectional study using a national COVID-19 inpatient database. We studied differences in direct and indirect effects of obesity and comorbidities according to sex and body mass index (BMI) categories in hospitalized COVID-19 patients in Brazil using path analysis models and logistic regression. For men, path analysis showed a direct association between BMI and death and a negative correlation of death and chronic cardiovascular disease (CCD). For women, the association of BMI and death was indirect, mediated by admission to the ICU and comorbidities and association with CCD was non-significant. In the logistic regression analyses, there was a positive association between death and BMI, age, diabetes mellitus, kidney and lung diseases and ICU admission. We highlight the need to consider the distinct impact of obesity and sex on COVID-19, of monitoring of BMI and of the design for specific male-targeted approaches to manage obesity.

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This study investigated the direct and indirect associations of physical activity and sedentary behavior with survival time in older adults. Prospective population-based cohort study used exploratory survey-type methods and physical performance tests in 319 adults aged ≥60 years. Trajectory diagrams were used to represent the initial hypothetical and final models with the relationships of independent, mediating, and dependent variables. Physical activity was indirectly associated with survival time and was mediated by instrumental activities of daily living and functional performance. In contrast, instrumental activities of daily living, functional performance, the number of hospitalizations, and medications mediated the association between duration of sedentary behavior and survival time. The explanatory power of the final model was 19%. Future efforts should focus on increasing the participation and adherence of older adults to exercise programs to improve their physical functions and general health, which may increase their health period and, consequently, their survival time.

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ABSTRACT BACKGROUND: Frailty syndrome is associated with various physical, cognitive, social, economic, and environmental factors. Although frailty syndrome occurs progressively with age, prevention and treatment are possible. Reducing or eliminating risks and increasing protective factors may be potential strategies for reducing the prevalence of injuries related to frailty. One of the most effective actions is to decrease the time spent in sedentary behavior (SB) by increasing regular physical activity (PA). OBJECTIVE: To examine the hypothetical effect of substitution of the time spent in sleep or SB with an equivalent time spent performing moderate or vigorous PA on frailty syndrome in the older population. DESIGN AND SETTING: An analytical cross-sectional study conducted using exploratory methods of survey, carried out in Alcobaça city, Bahia, Brazil. METHODS: A total of 456 older adults of both sexes, aged ≥ 60 years, participated in this study. Frailty syndrome was identified according to the criteria of the Study of Osteoporotic Fractures. PA and SB were assessed using the International Physical Activity Questionnaire, and sleep was assessed using the Pittsburgh Sleep Quality Index. The effects of time substitution on these behaviors were verified using Poisson regression. RESULTS: The replacement of 60 min/day of SB (prevalence ratio, PR = 0.52; 95% confidence interval, CI: 0.28-0.96) or sleep (PR = 0.52; 95% CI: 0.27-0.98) with 60 min/day of moderate PA (MPA) was associated with a 48% reduction in the prevalence of frailty syndrome. CONCLUSIONS: Replacing the time spent sitting or sleeping with the same amount of MPA time may reduce frailty; the longer the duration of time spent in the substitution of sleep or SB with MPA, the greater the benefits.

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Abstract BACKGROUND: Obesity is a risk factor for falls in older adults, but the effects of body fat distribution and its interaction with other factors are not well established. OBJECTIVES: To verify the occurrence of falls among older adults with and without abdominal obesity and the effects of sociodemographic, health, and behavioral variables on this outcome. DESIGN AND SETTING: A cross-sectional study in an urban area of Alcobaça, Brazil. METHODS: Men and women older than 60 years with (270) and without (184) abdominal obesity were included. Sociodemographic, health, and behavioral data were collected using validated questionnaires in Brazil. Descriptive and path analyses were performed (P < 0.05). RESULTS: The occurrence of falls was high in participants with abdominal obesity (33.0%). In both groups, a higher number of morbidities (β = 0.25, P < 0.001; β = 0.26, P = 0.002) was directly associated with a higher occurrence of falls. Among participants without abdominal obesity, a lower number of medications (β = -0.16; P = 0.04), a higher number of depressive symptoms (β = 0.15; P = 0.04), worse performance on the agility and dynamic balance tests (β = 0.37; P < 0.001), and lower functional disability for basic activities of daily living (β = -0.21; P = 0.006) were directly associated with the occurrence of falls. CONCLUSION: Adults older than 60 years with abdominal obesity have a higher prevalence of falls. Different factors were associated with the occurrence of falls in both groups.

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BACKGROUND: Frailty syndrome is associated with various physical, cognitive, social, economic, and environmental factors. Although frailty syndrome occurs progressively with age, prevention and treatment are possible. Reducing or eliminating risks and increasing protective factors may be potential strategies for reducing the prevalence of injuries related to frailty. One of the most effective actions is to decrease the time spent in sedentary behavior (SB) by increasing regular physical activity (PA). OBJECTIVE: To examine the hypothetical effect of substitution of the time spent in sleep or SB with an equivalent time spent performing moderate or vigorous PA on frailty syndrome in the older population. DESIGN AND SETTING: An analytical cross-sectional study conducted using exploratory methods of survey, carried out in Alcobaça city, Bahia, Brazil. METHODS: A total of 456 older adults of both sexes, aged ≥ 60 years, participated in this study. Frailty syndrome was identified according to the criteria of the Study of Osteoporotic Fractures. PA and SB were assessed using the International Physical Activity Questionnaire, and sleep was assessed using the Pittsburgh Sleep Quality Index. The effects of time substitution on these behaviors were verified using Poisson regression. RESULTS: The replacement of 60 min/day of SB (prevalence ratio, PR = 0.52; 95% confidence interval, CI: 0.28-0.96) or sleep (PR = 0.52; 95% CI: 0.27-0.98) with 60 min/day of moderate PA (MPA) was associated with a 48% reduction in the prevalence of frailty syndrome. CONCLUSIONS: Replacing the time spent sitting or sleeping with the same amount of MPA time may reduce frailty; the longer the duration of time spent in the substitution of sleep or SB with MPA, the greater the benefits.

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BACKGROUND: Obesity is a risk factor for falls in older adults, but the effects of body fat distribution and its interaction with other factors are not well established. OBJECTIVES: To verify the occurrence of falls among older adults with and without abdominal obesity and the effects of sociodemographic, health, and behavioral variables on this outcome. DESIGN AND SETTING: A cross-sectional study in an urban area of Alcobaça, Brazil. METHODS: Men and women older than 60 years with (270) and without (184) abdominal obesity were included. Sociodemographic, health, and behavioral data were collected using validated questionnaires in Brazil. Descriptive and path analyses were performed (P < 0.05). RESULTS: The occurrence of falls was high in participants with abdominal obesity (33.0%). In both groups, a higher number of morbidities (ß = 0.25, P < 0.001; ß = 0.26, P = 0.002) was directly associated with a higher occurrence of falls. Among participants without abdominal obesity, a lower number of medications (ß = -0.16; P = 0.04), a higher number of depressive symptoms (ß = 0.15; P = 0.04), worse performance on the agility and dynamic balance tests (ß = 0.37; P < 0.001), and lower functional disability for basic activities of daily living (ß = -0.21; P = 0.006) were directly associated with the occurrence of falls. CONCLUSION: Adults older than 60 years with abdominal obesity have a higher prevalence of falls. Different factors were associated with the occurrence of falls in both groups.

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ABSTRACT BACKGROUND: Dynapenia is characterized by mobility limitations in the older population when combined with aggravating behavioral factors that can increase the risk of morbidity and mortality. OBJECTIVE: To investigate the hypothetical effects of reallocation of time spent on sedentary behavior (SB), moderate-to-vigorous physical activity (MVPA), and sleep on dynapenia in older adults. DESIGN AND SETTING: A prospective cohort study using exploratory surveys in Alcobaça City, Bahia State, Brazil. METHODS: In total, 176 older adults (≥ 60 years) of both sexes participated in this study. Dynapenia was assessed using the handgrip strength test with cutoff points of < 27 kg for men and < 16 kg for women. MVPA and SB were assessed using the International Physical Activity Questionnaire, and sleep was assessed using the Pittsburgh Sleep Quality Index. RESULTS: Effects on reallocation were found for the shortest times, such as 10 minutes (odds ratio (OR) 0.92; 95% confidence interval (CI): 0.85-0.99); substituting MVPA with SB increased the chances of dynapenia by 58.0% (95% CI: 1.01-2.49). Analyzing the substitution of 60 minutes/day of SB with 60 minutes/day of MVPA revealed a protective effect, with a lower OR for dynapenia of 37.0% (OR 0.63; 95% CI: 0.40-0.99). The reallocation of sleep time did not significantly reduce dynapenia. CONCLUSIONS: Substituting the time spent sitting with the same amount of time spent on MVPA can reduce dynapenia, and a longer reallocation time confers greater health benefits in older adults.

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Objective: To determine the existence of association between depressive symptoms and mortality in older individuals in Latin America. Method: A systematic review with meta-analysis was performed based on published studies indexed in PubMed, Scientific Electronic Library Online (SciELO), Web of Science, Cochrane Library, Scopus, and LILACS (Literatura Latino-Americana e do Caribe em Ciências da Saúde). The review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO), and structured according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Meta-analysis was performed using random effects models, and the data analyzed included crude relative risk (RR) and heterogeneity, with poin estimates and 95% confidence intervals (95%CI). Results: Five studies, performed in Brazil and Mexico, were included in the meta-analysis, for a total of 8 954 older individuals. RR for mortality in the presence of depressive symptoms was 1.44 (95%CI: 1.16; 1.78). Heterogeneity was 80.87%. Meta-regression showed that the higher the proportion of women in the sample, the higher the mortality risk associated with depressive symptoms; and that the longer the study follow-up, the lower the risk of mortality associated with depressive symptoms. Conclusion: The presence of depressive symptoms was positively associated with mortality in older Latin American individuals. The RR for death was 44.0% higher in individuals with depressive symptoms as compared to those without depressive symptoms. The main study limitations were the lower number of studies retrieved through systematic review and the variety of scales used to determine the presence of depressive symptoms.

Objetivo: Investigar la relación entre un cuadro sintomático de depresión y la mortalidad en personas mayores en América Latina. Métodos: Se realizó una revisión sistemática con metanálisis de los estudios indexados en las bases de datos PubMed, Scientific Electronic Library Online (SciELO), Web of Science, Cochrane Library, Scopus y Literatura Latinoamericana y del Caribe en Ciencias de la Salud (LILACS). El estudio se registró en la base de datos PROSPERO (Registro Prospectivo Internacional de Revisiones Sistemáticas) y se estructuró según la referencia metodológica PRISMA (Elementos preferidos de notificación para revisiones sistemáticas y metanálisis). El metanálisis se realizó con modelos de efectos aleatorios, y los datos analizados incluyeron los valores de riesgo relativo (RR) bruto y de heterogeneidad, con estimaciones puntuales e intervalos de confianza de 95% (IC 95%). Resultados: En el metanálisis se incluyeron cinco estudios realizados en Brasil y México con 8 954 personas mayores. El RR de mortalidad en presencia de un cuadro sintomático de depresión fue de 1,44 (IC 95%: 1,16; 1,78). La heterogeneidad fue de 80,87%. Las metarregresiones mostraron que cuanto mayor era la proporción de mujeres en las muestras de los estudios, mayor era el riesgo de mortalidad relacionada con el cuadro sintomático de depresión, y que cuanto mayor era el tiempo de seguimiento del estudio, menor era el riesgo de mortalidad relacionada con dicho cuadro sintomático. Conclusión: La presencia de un cuadro sintomático de depresión guardó una relación positiva con la mortalidad de personas mayores en América Latina, con un RR de muerte 44% mayor en comparación con las personas sin síntomas. Las principales limitaciones del estudio fueron el reducido número de estudios encontrados en la revisión sistemática y la variación entre las escalas utilizadas para determinar la presencia de un cuadro sintomático de depresión.

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BACKGROUND: Dynapenia is characterized by mobility limitations in the older population when combined with aggravating behavioral factors that can increase the risk of morbidity and mortality. OBJECTIVE: To investigate the hypothetical effects of reallocation of time spent on sedentary behavior (SB), moderate-to-vigorous physical activity (MVPA), and sleep on dynapenia in older adults. DESIGN AND SETTING: A prospective cohort study using exploratory surveys in Alcobaça City, Bahia State, Brazil. METHODS: In total, 176 older adults (≥ 60 years) of both sexes participated in this study. Dynapenia was assessed using the handgrip strength test with cutoff points of < 27 kg for men and < 16 kg for women. MVPA and SB were assessed using the International Physical Activity Questionnaire, and sleep was assessed using the Pittsburgh Sleep Quality Index. RESULTS: Effects on reallocation were found for the shortest times, such as 10 minutes (odds ratio (OR) 0.92; 95% confidence interval (CI): 0.85-0.99); substituting MVPA with SB increased the chances of dynapenia by 58.0% (95% CI: 1.01-2.49). Analyzing the substitution of 60 minutes/day of SB with 60 minutes/day of MVPA revealed a protective effect, with a lower OR for dynapenia of 37.0% (OR 0.63; 95% CI: 0.40-0.99). The reallocation of sleep time did not significantly reduce dynapenia. CONCLUSIONS: Substituting the time spent sitting with the same amount of time spent on MVPA can reduce dynapenia, and a longer reallocation time confers greater health benefits in older adults.

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The aim of this article is to assess the odds ratio of hospitalization and mortality due to COVID-19 in people with obesity using data from residents of Espírito Santo, Brazil. An observational, quantitative, cross-sectional study was carried out from the database available on the official channel of the State Health Secretariat of Espírito Santo. Crude odds ratio estimates (ORs) referring to the association between variables were calculated, as well as adjusted odds ratios (adjusted odds ratios-OR adj.) and their respective 95% confidence intervals (CI 95%). The results indicate that men, non-white, no education or with lower education level and age over 40 years old were more likely to be hospitalized and died of COVID-19. People with obesity are at risk of hospitalization and death due to COVID-19 54% and 113% higher than people who do not have obesity. People with obesity had a higher chance of hospitalization when they were over 40 years old, had breathing difficulty, and the comorbidities diabetes (2.18 higher) and kidney disease (4.10 higher). The odds ratio of death for people with obesity over 60 years old was 12.51 higher, and those who were hospitalized was 17.9 higher compared to those who were not hospitalized.

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The aim of the present study was to investigate the relationship of dynapenia combined with sedentary behavior (SB) on the risk of mortality in older adults living in a Brazilian community. A total of 322 participants aged ≥ 60 years from the ELSIA (Longitudinal Study of Elderly Health in Alcobaça) prospective cohort were included. Dynapenia was diagnosed when the handgrip strength was < 27 â€‹kg for men and < 16 â€‹kg for women. The exposure time to SB was assessed considering the total time spent sitting during one day in the week and one day on the weekend. When combined with dynapenia, we derived the construction of four groups: best behavior (absence of dynapenia and low SB), intermediate behavior (absence of dynapenia and high SB; presence of dynapenia and low SB) and worst behavior (presence of dynapenia and high SB). Mortality was assessed by the follow-up time until death and/or censorship. During the 5-year follow-up of the study, 55 participants progressed to death. In the adjusted models, the dynapenia and the time spent exposed to SB were analyzed in a combined way, the older adults with worse behavior (high SB and dynapenia) had higher risk ratios for mortality (hazard ratio 2.46; 95% confidence interval 1.01-5.97) than the best behavior group. Older adults with dynapenia are at greater risk for all-cause mortality, which is aggravated by the addition of longer exposure to SB.

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RESUMO Objetivo. Averiguar a associação entre sintomatologia depressiva e mortalidade em idosos da América Latina. Métodos. Realizou-se uma revisão sistemática com metanálise de estudos indexados nas bases PubMed, Scientific Electronic Library Online (SciELO), Web of Science, Cochrane Library, Scopus e Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS). O estudo foi registrado na base PROSPERO (International Prospective Register of Systematic Reviews) e estruturado de acordo com o referencial metodológico PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses). A metanálise foi realizada usando modelos de efeitos aleatórios, e os dados analisados incluíram as medidas de risco relativo (RR) bruto e heterogeneidade, com estimativas pontuais e intervalos de confiança de 95% (IC95%). Resultados. Cinco estudos, realizados no Brasil e no México, foram incluídos na metanálise, abrangendo 8 954 idosos. O RR para mortalidade na presença de sintomatologia depressiva foi de 1,44 (IC95%: 1,16; 1,78). A heterogeneidade encontrada foi de 80,87%. As metarregressões mostraram que quanto maior a proporção de mulheres nas amostras dos estudos, maior o risco de mortalidade associada à sintomatologia depressiva, e quanto maior o tempo de acompanhamento do estudo, menor o risco de mortalidade associada à sintomatologia depressiva. Conclusão. A presença de sintomatologia depressiva associou-se positivamente à mortalidade em idosos latino-americanos, com RR de óbito 44% maior em relação aos idosos sem sintomatologia depressiva. As principais limitações do estudo foram o pequeno número de trabalhos encontrados na revisão sistemática e a variação entre as escalas utilizadas para determinar a presença de sintomatologia depressiva.

ABSTRACT Objective. To determine the existence of association between depressive symptoms and mortality in older individuals in Latin America. Method. A systematic review with meta-analysis was performed based on published studies indexed in PubMed, Scientific Electronic Library Online (SciELO), Web of Science, Cochrane Library, Scopus, and LILACS (Literatura Latino-Americana e do Caribe em Ciências da Saúde). The review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO), and structured according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Meta-analysis was performed using random effects models, and the data analyzed included crude relative risk (RR) and heterogeneity, with poin estimates and 95% confidence intervals (95%CI). Results. Five studies, performed in Brazil and Mexico, were included in the meta-analysis, for a total of 8 954 older individuals. RR for mortality in the presence of depressive symptoms was 1.44 (95%CI: 1.16; 1.78). Heterogeneity was 80.87%. Meta-regression showed that the higher the proportion of women in the sample, the higher the mortality risk associated with depressive symptoms; and that the longer the study follow-up, the lower the risk of mortality associated with depressive symptoms. Conclusion. The presence of depressive symptoms was positively associated with mortality in older Latin American individuals. The RR for death was 44.0% higher in individuals with depressive symptoms as compared to those without depressive symptoms. The main study limitations were the lower number of studies retrieved through systematic review and the variety of scales used to determine the presence of depressive symptoms.

RESUMEN Objetivo. Investigar la relación entre un cuadro sintomático de depresión y la mortalidad en personas mayores en América Latina. Métodos. Se realizó una revisión sistemática con metanálisis de los estudios indexados en las bases de datos PubMed, Scientific Electronic Library Online (SciELO), Web of Science, Cochrane Library, Scopus y Literatura Latinoamericana y del Caribe en Ciencias de la Salud (LILACS). El estudio se registró en la base de datos PROSPERO (Registro Prospectivo Internacional de Revisiones Sistemáticas) y se estructuró según la referencia metodológica PRISMA (Elementos preferidos de notificación para revisiones sistemáticas y metanálisis). El metanálisis se realizó con modelos de efectos aleatorios, y los datos analizados incluyeron los valores de riesgo relativo (RR) bruto y de heterogeneidad, con estimaciones puntuales e intervalos de confianza de 95% (IC 95%). Resultados. En el metanálisis se incluyeron cinco estudios realizados en Brasil y México con 8 954 personas mayores. El RR de mortalidad en presencia de un cuadro sintomático de depresión fue de 1,44 (IC 95%: 1,16; 1,78). La heterogeneidad fue de 80,87%. Las metarregresiones mostraron que cuanto mayor era la proporción de mujeres en las muestras de los estudios, mayor era el riesgo de mortalidad relacionada con el cuadro sintomático de depresión, y que cuanto mayor era el tiempo de seguimiento del estudio, menor era el riesgo de mortalidad relacionada con dicho cuadro sintomático. Conclusión. La presencia de un cuadro sintomático de depresión guardó una relación positiva con la mortalidad de personas mayores en América Latina, con un RR de muerte 44% mayor en comparación con las personas sin síntomas. Las principales limitaciones del estudio fueron el reducido número de estudios encontrados en la revisión sistemática y la variación entre las escalas utilizadas para determinar la presencia de un cuadro sintomático de depresión.

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ABSTRACT This is a quantitative methodological study for the validation of a research instrument. It aimed to validate the data from the TrackHealth accelerometry device. The sample consisted of 30 adult individuals of both sexes selected by convenience who met the inclusion and exclusion criteria. The physical activity monitors used for the research protocol were the ActiGraph® wGT3X-BT triaxial accelerometer and the TrackHealth accelerometer (TH). The activity protocol consisted of 4 (four) activities (walking at 4.8 and 6.4 km h1 and running at 9.7 and 12 km h1) performed in the laboratory, on an Ibramed treadmill, lasting 5 (five) minutes at each stage. A difference was found between the raw acceleration data of the two devices, however the TrackHealth device showed higher sensitivity at speeds of 4.8 and 6.4 km/h, and a high level of agreement (2.7-2.8%) at the initial speeds of the magnitude vectors. However, there is still a need for improvement in the functioning of the device, so that TrackHealth can be commercialized.

RESUMO Trata-se de um estudo metodológico quantitativo para validação de um instrumento de pesquisa. O objetivo era validar os dados do dispositivo de acelerometria TrackHealth. A amostra foi composta por 30 indivíduos adultos de ambos os sexos selecionados por conveniência que atenderam aos critérios de inclusão e exclusão. Os monitores de atividade física utilizados para o protocolo de pesquisa foram o acelerômetro triaxial ActiGraph® wGT3X-BT e o acelerômetro TrackHealth (TH). O protocolo de atividades consistiu em 4 (quatro) atividades (caminhada a 4,8 e 6,4 km h1 e corrida a 9,7 e 12 km h1) realizadas em laboratório, em esteira Ibramed, com duração de 5 (cinco) minutos em cada etapa. Foi encontrada uma diferença entre os dados brutos de aceleração dos dois dispositivos, no entanto, o dispositivo TrackHealth apresentou maior sensibilidade nas velocidades de 4,8 e 6,4 km / h, e um alto nível de concordância (2,7-2,8%) nas velocidades iniciais da magnitude vetores. Porém, ainda há necessidade de melhorias no funcionamento do aparelho, para que o TrackHealth possa ser comercializado.

RESUMO

OBJECTIVE: To examine the effects of physical activity (PA) and sedentary behaviour (SB), in isolation and combination, on all-cause mortality in older adults. METHODS: Prospective, population-based cohort study. The data were collected from first wave in 2015 and the follow-up continued until 2020. The sample consisted of 332 older adult people aged ≥ 60 years-old, out of which 59 died. The level of PA and SB was assessed by the International Physical Activity Questionnaire (IPAQ). The older adults were divided into PA categorized as sufficiently active and insufficiently active and into high and low SB. We built four combinations of PA and SB. Also, we used the Cox proportional hazards regression with a 95% confidence interval with hazard ratio estimate so as to verify the mortality risks between PA, SB, and the combinations of PA and SB. RESULTS: Insufficiently active individuals had higher risks of mortality compared to sufficiently active people. We observed no associations between SB and mortality separately; however, when evaluated in a combined way, insufficiently active individuals and with a high SB time had a higher chance of mortality compared to active individuals with a low SB time. CONCLUSION: Our isolated analyses demonstrate that complying with PA recommendations reduces the risk of mortality; however, no association was found between the time of PA exposure with the time of SB. When analysing the combination, being physically inactive and with a long time of SB showed higher mortality rates, with SB being an enhancer of this risk. The results of this study show the interdependence of SB for PA performed at moderate to vigorous intensity. The understanding of this interrelation must be considered in the formulation of public health guidelines.

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RESUMO

BACKGROUND: The objective of the study is to investigate the effects of reallocating time spent engaging in sedentary behavior (SB) and physical activity on the risk of mortality. METHODS: In all, 332 older adult low-income and low-education populations participated in the study. At the end of the study, 273 of the participants were alive and 59 had died. Time spent undertaking moderate to vigorous physical activity (MVPA) and SB was assessed using the international physical activity questionnaire. The Cox proportional hazards regression model was used. RESULTS: The replacement of time spent engaging in SB with MVPA reduced the risk of mortality from all causes in the older adults, resulting in reductions in mortality risk of between 10% and 46%. CONCLUSION: A reduction in the risk of mortality in older adults was observed when time spent in SB was replaced with the same amount of time in MVPA for all times tested.

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