Self-rated health among adolescents from vulnerable areas and their sociodemographic, lifestyle and contextual factors: A multilevel analysis.

PURPOSE: Understanding self-rated health in young people can help orient global health actions, especially in regions of social vulnerability. The present study analysed individual and contextual factors associated with self-rated health in a sample of Brazilian adolescents. DESIGN AND METHODS: Cross-sectional data from 1272 adolescents (aged 11-17; 48.5% of girls) in low human development index (HDI) neighbourhoods were analysed (HDI from 0.170 to 0.491). The outcome variable was self-rated health. Independent variables relating to individual factors (biological sex, age and economic class) and lifestyle (physical activity, alcohol, tobacco consumption and nutritional state) were measured using standardised instruments. The socio-environmental variables were measured using neighbourhood registered data where the adolescents studied. Multilevel regression was used to estimate the regression coefficients and their 95% confidence intervals (CI). RESULTS: Good self-rated health prevalence was of 72.2%. Being male (B: -0.165; CI: -0.250 to -0.081), age (B: -0.040; CI: -0.073 to -0.007), weekly duration of moderate to vigorous physical activity (B: 0.074; CI: 0.048-0.099), body mass index (B: -0.025; CI: -0.036 to -0.015), number of family healthcare teams in the neighbourhood (B: 0.019; CI: 0.006-0.033) and dengue incidence (B: -0.001; CI: -0.002; -0.000) were factors associated with self-rated health among students from vulnerable areas. CONCLUSIONS/PRACTICAL IMPLICATIONS: Approximately three in every 10 adolescents in areas of social vulnerability presented poor self-rated health. This fact was associated with biological sex and age (individual factors), physical activity levels and BMI (lifestyle) and the number of family healthcare teams in the neighbourhood (contextual).

Floral sources to Tetragonisca angustula (Hymenoptera: Apidae) and their pollen morphology in a Southeastern Brazilian Atlantic Forest.

The stingless bees are important flowers visitors of several plant species, due to their feeding habits and foraging behavior, constituting an important group to maintain biodiversity and the dynamics of tropical communities. Among stingless bees, Tetragonisca angustula is widely distributed in tropical habitats, and has been considered an important pollinator of different plant families. To support a rational economic use of this group, there is a need to characterize the plant species that represent important sources as part of their diet, as preferred, alternative or casual food sources. The aim of this survey was to distinguish the plant species that T. angustula visited most often. The study was undertaken in four regions of the Atlantic Rainforest in Rio de Janeiro state (Brazil) over a year from March 2008 to February 2009. For this, we collected bees, flowering plants and bee pollen loads from the four sites, and evaluated pollen morphology in the laboratory. Field observations showed the presence of plants belonging to ten different families and pollen loads showed the presence of pollen types belonging to 26 plant families. There were strong differences between pollen types, especially regarding pollen grain shape. The present survey suggests a high value of these plant species as trophic resources for the T. angustula in the understory of Atlantic Rainforest. Changes in these fragments of this forest may compromise the availability of resources for Tetragonisca angustula species and other stingless bees.

Direct Assessment of Rabbit Cortical Bone Basic Multicellular Unit Longitudinal Erosion Rate: A 4D Synchrotron-Based Approach.

Cortical bone remodeling is carried out by basic multicellular units (BMUs), which couple resorption to formation. Although fluorochrome labeling has facilitated study of BMU formative parameters since the 1960s, some resorptive parameters, including the longitudinal erosion rate (LER), have remained beyond reach of direct measurement. Indeed, our only insights into this spatiotemporal parameter of BMU behavior come from classical studies that indirectly inferred LER. Here, we demonstrate a 4D in vivo method to directly measure LER through in-line phase contrast synchrotron imaging. The tibias of rabbits (n = 15) dosed daily with parathyroid hormone were first imaged in vivo (synchrotron micro-CT; day 15) and then ex vivo 14 days later (conventional micro-CT; day 29). Mean LER assessed by landmarking the co-registered scans was 23.69 ± 1.73 µm/d. This novel approach holds great promise for the direct study of the spatiotemporal coordination of bone remodeling, its role in diseases such as osteoporosis, as well as related treatments. © 2022 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).

Labor gymnastics in health professionals: a systematic review / Gimnasia laboral para profesionales de la salud: una revisión sistemática / Ginástica laboral em profissionais de saúde: uma revisão sistemática

ABSTRACT This aimed to systematically review randomized controlled trials and compare the effectiveness of labor gymnastics with that of no intervention, minimal intervention or other types of intervention in healthcare workers, in relation to musculoskeletal pain, stress, physical disability, and absence from work. A search was carried out in the PUBMED, Pedro, EMBASE, CENTRAL, CINAHAL, PSYCHINFO, NIOSHTIC-2, SPORT DICUS, SCIELO, and LILACS databases. In total, 3,598 articles were found, seven of which were eligible for the study. There was a statistical difference in musculoskeletal pain in favor of labor gymnastics after 5, 10 and 12 weeks (MD: −0.63; 95%, CI: −1.17; −0.08) and 6, 9 and 12 months of intervention (MD: −0.74; 95% CI: −1.43; −0.05). There was also a statistical difference in favor of labor gymnastics in terms of time off work (MD: −3.26; 95% CI: −6.28; −0.25) and stress (SMD: −0.35; 95% CI: −0.67; −0.03) in studies in which interventions were carried out for 5 and 10 weeks. Labor gymnastics can contribute to the physical and mental health of healthcare professionals. However, more randomized controlled studies with a larger sample size and aimed at this professional category are needed.

RESUMEN Este estudio tuvo por objetivo realizar una revisión sistemática de los ensayos aleatorizados controlados y comparar la efectividad de la gimnasia laboral con ninguna intervención, con intervención mínima u otros tipos de intervención en los profesionales de la salud con relación a dolor musculoesquelético, estrés, incapacidad física y baja laboral. Se realizaron búsquedas en las bases de datos PUBMED, PEDro, EMBASE, CENTRAL, CINAHAL, PsycINFO, NIOSHTIC-2, SPORTDicus, SciELO y LILACS. Se encontraron 3.598 artículos, de los cuales siete fueron elegibles. Hubo una diferencia estadística para el dolor musculoesquelético a favor de la gimnasia laboral después de 5, 10 y 12 semanas (MD: −0,63; 95% CI: −1,17; −0,08) y 6,9 y 12 meses de intervención (MD: −0,74; 95% CI: −1,43; −0,05). También hubo una diferencia estadística a favor de la gimnasia laboral para el tiempo de baja laboral (MD: −3,26; 95% IC: −6,28; −0,25) y la reducción del estrés (SMD: −0,35; 95% IC: −0,67; −0,03) en los estudios que realizaron la intervención entre cinco y diez semanas. La gimnasia laboral puede contribuir a la salud física y mental de los profesionales de la salud, sin embargo, son necesarios más estudios aleatorizados controlados dirigidos a esta categoría profesional y con un mayor tamaño muestral para confirmar esta hipótesis.

RESUMO Este estudo tem como objetivo revisar sistematicamente ensaios randomizados controlados e comparar a eficácia da ginástica laboral com nenhuma intervenção, intervenção mínima ou outros tipos de intervenção em trabalhadores de saúde, em relação à dor musculoesquelética, estresse, incapacidade física e afastamento do trabalho. Foram realizadas buscas nas bases de dados PUBMED, PEDro, EMBASE, CENTRAL, CINAHAL, PsycINFO, NIOSHTIC-2, SPORTDicus, SCIELO e LILACS. Foram encontrados 3598 artigos, sendo sete elegíveis. Houve diferença estatística para dor musculoesquelética a favor da ginástica laboral após 5, 10 e 12 semanas (MD: −0,63; 95%, CI: −1,17; −0,08) e 6,9 e 12 meses de intervenção (MD: −0,74; 95% CI: −1,43; −0,05). Também foi verificada diferença estatística a favor da ginástica laboral para o afastamento no trabalho (MD: −3,26; 95% IC: −6,28; −0,25) e para redução do estresse (SMD: −0.35; 95% IC: −0,67; −0.03) nos estudos que realizaram intervenção por 5 e 10 semanas. A ginástica laboral pode contribuir para a saúde física e mental do profissional de saúde, no entanto, mais estudos randomizados controlados voltados para essa categoria profissional, e com maior valor amostral, são necessários para confirmação dessa hipótese.

Factors Associated with Urinary Incontinence in Pregnant Adolescents: A Case-Control Study.

STUDY OBJECTIVE: To evaluate the factors associated with urinary incontinence (UI) in pregnant adolescents. DESIGN, SETTING, PARTICIPANTS, INTERVENTIONS, AND MAIN OUTCOME MEASURES: A case-control study was conducted in 3 Brazilian public hospitals. Adolescents between the ages of 10 and 19 years with gestational age of 27 weeks or more were included. The sample size was calculated using the Open-epi (http://www.openepi.com/Menu/OE_Menu.htm) 3.01 program considering gestational obesity as an associated factor. The resulting sample consisted of 658 volunteers, 329 in the case group (with UI) and 329 in the control group (without UI). The subjects responded to the evaluation form containing information about the outcome of interest and possible associated factors. Stata 14.0 software (StataCorp) was used to perform multivariate logistic analysis. RESULTS: The variables age between 10 and 14 years (odds ratio [OR], 2.55; 95% confidence interval [CI], 1.13-5.35; P = .023), previous UI (OR, 1.9; 95% CI, 1.36-2.75; P < .001), and constipation (OR, 1.7; 95% CI, 1.23-2.42; P = .002) were associated with UI in pregnant adolescents. Multigravida was not a factor associated (OR, 0.5; 95% CI, 0.31-0.66; P < .001) for UI in pregnant adolescents. CONCLUSION: Attention must be given to primigravidae between the ages of 10 and 14 years who report previous UI and/or constipation to ensure referral to the appropriate health care professional for early prevention of UI.

Micro-CT based finite element models of cancellous bone predict accurately displacement once the boundary condition is well replicated: A validation study.

Non-destructive 3D micro-computed tomography (microCT) based finite element (microFE) models are used to estimate bone mechanical properties at tissue level. However, their validation remains challenging. Recent improvements in the quantification of displacements in bone tissue biopsies subjected to staged compression, using refined Digital Volume Correlation (DVC) techniques, now provide a full field displacement information accurate enough to be used for microFE validation. In this study, three specimens (two humans and one bovine) were tested with two different experimental set-ups, and the resulting data processed with the same DVC algorithm. The resulting displacement vector field was compared to that predicted by microFE models solved with three different boundary conditions (BC): nominal force resultant, nominal displacement resultant, distributed displacement. The first two conditions were obtained directly from the measurements provided by the experimental jigs, whereas in the third case the displacement field measured by the DVC in the top and bottom layer of the specimen was applied. Results show excellent relationship between the numerical predictions (x) and the experiments (y) when using BC derived from the DVC measurements (UX: y=1.07x-0.002, RMSE: 0.001mm; UY: y=1.03x-0.001, RMSE: 0.001mm; UZ: y=x+0.0002, RMSE: 0.001 mm for bovine specimen), whereas only poor correlation was found using BCs according to experiment set-ups. In conclusion, microFE models were found to predict accurately the vectorial displacement field using interpolated displacement boundary condition from DVC measurement.

Evaluating the macroscopic yield behaviour of trabecular bone using a nonlinear homogenisation approach.

Computational homogenisation approaches using high resolution images and finite element (FE) modelling have been extensively employed to evaluate the anisotropic elastic properties of trabecular bone. The aim of this study was to extend its application to characterise the macroscopic yield behaviour of trabecular bone. Twenty trabecular bone samples were scanned using a micro-computed tomography device, converted to voxelised FE meshes and subjected to 160 load cases each (to define a homogenised multiaxial yield surface which represents several possible strain combinations). Simulations were carried out using a parallel code developed in-house. The nonlinear algorithms included both geometrical and material nonlinearities. The study found that for tension-tension and compression-compression regimes in normal strain space, the yield strains have an isotropic behaviour. However, in the tension-compression quadrants, pure shear and combined normal-shear planes, the macroscopic strain norms at yield have a relatively large variation. Also, our treatment of clockwise and counter-clockwise shears as separate loading cases showed that the differences in these two directions cannot be ignored. A quadric yield surface, used to evaluate the goodness of fit, showed that an isotropic criterion adequately represents yield in strain space though errors with orthotropic and anisotropic criteria are slightly smaller. Consequently, although the isotropic yield surface presents itself as the most suitable assumption, it may not work well for all load cases. This work provides a comprehensive assessment of material symmetries of trabecular bone at the macroscale and describes in detail its macroscopic yield and its underlying microscopic mechanics.

Mycotoxicological and palynological profiles of commercial brands of dried bee pollen.

Pollen is used in the human diet as a food supplement because of its high nutritional value; however, this product is prone to fungal contamination that could potentially generate toxins that are harmful to human health. This study aimed to verify the floral diversity of commercial brands of bee pollen and their mycotoxicological safety for human consumption. A total of 27 bee pollen samples were analyzed; these samples represented commercial brands, either showing an inspection seal or not, marketed in the State of Rio de Janeiro. The analyzed parameters included floral diversity through palynological analysis, water activity, fungal counts, identification and toxigenic profiles. The palynological analysis identified nine plant families, of which the Asteraceae was predominant. Analysis of hygienic quality based on fungal load showed that 92% of samples were reproved according to the commercial, sanitary, and food safety quality indicators. Aspergillus, Cladosporium and Penicillium were the most common genera. Toxigenic evaluation showed that 25% of the A. flavus strains produced aflatoxins. The high rate of contamination of products bearing an inspection seal emphasizes the need to monitor the entire procedure of bee pollen production, as well as to revise the current legislation to ensure safe commercialization of this product.

Mycotoxicological and palynological profiles of commercial brands of dried bee pollen

Abstract Pollen is used in the human diet as a food supplement because of its high nutritional value; however, this product is prone to fungal contamination that could potentially generate toxins that are harmful to human health. This study aimed to verify the floral diversity of commercial brands of bee pollen and their mycotoxicological safety for human consumption. A total of 27 bee pollen samples were analyzed; these samples represented commercial brands, either showing an inspection seal or not, marketed in the State of Rio de Janeiro. The analyzed parameters included floral diversity through palynological analysis, water activity, fungal counts, identification and toxigenic profiles. The palynological analysis identified nine plant families, of which the Asteraceae was predominant. Analysis of hygienic quality based on fungal load showed that 92% of samples were reproved according to the commercial, sanitary, and food safety quality indicators. Aspergillus, Cladosporium and Penicillium were the most common genera. Toxigenic evaluation showed that 25% of the A. flavus strains produced aflatoxins. The high rate of contamination of products bearing an inspection seal emphasizes the need to monitor the entire procedure of bee pollen production, as well as to revise the current legislation to ensure safe commercialization of this product.

Saúde autorreportada de adolescentes de Fortaleza, Ceará: análise de fatores individuais e socioambientais / Self-reported health of adolescents from Fortaleza, Ceará: analysis of individual and socio-environmental factors

O presente estudo teve como objetivo analisar os fatores individuais e socioambientais associados à saúde autorreportada de adolescentes, à luz do modelo de Dahlgren e Whitehead de determinação social da saúde. Este modelo explica a relação entre o indivíduo, ambiente e o processo saúde-doença, contribuindo para uma melhor compreensão das iniquidades em relação aos fatores de riscos e de proteção no qual os indivíduos podem estar expostos. Estudo transversal de análise secundária do banco de dados do projeto "Fortaleça sua saúde", realizado em 2014 com escolares de ambos os sexos com faixa etária de 11 a 17 anos, matriculados em Escolas de Tempo Integral. A variável desfecho foi a saúde autorreportada e as variáveis independentes seguiram o modelo de Dahlgren e Whitehead, relacionadas aos fatores individuais, estilo de vida e aspectos socioambientais. As informações referentes às variáveis socioambientais foram provenientes de relatórios e plataformas digitais de domínio público. Para análise dos dados utilizou-se a distribuição de frequências absolutas e relativas para descrever as variáveis categóricas e a média e desvio padrão foram utilizados para descrever as variáveis contínuas. A regressão logística multinível foi utilizada, com estimativas de odds ratio com intervalos de confiança de 95%. As análises foram efetuadas no software STATA versão 11.0. O nível de significância final foi fixado em 5%. Todas as recomendações éticas da resolução 466/2012 foram cumpridas. Dos 1182 adolescentes, 51,5% era do sexo masculino, prevalecendo adolescentes na faixa etária da adolescência inicial, de 11 a 14 anos. Na prática de atividade física, 53,1% foram considerados insuficientemente ativos. Os meninos praticavam mais atividade física, porém relataram maior uso de tabaco. Não houve diferença estatisticamente significativa no estado nutricional e no uso de álcool entre os adolescentes. A prevalência de uma boa saúde autorreportada foi de 72,2% entre os adolescentes, sendo influenciada pelos fatores individuais gênero e idade, em relação aos socioambientais pelo número de equipes de saúde da família no bairro e no estilo de vida pelo tempo semanal de prática de atividade física moderada e vigorosa e pelo índice de massa corporal. A saúde autorreportada positiva pelos adolescentes foi influenciada pelos fatores individuais gênero e idade, em relação aos socioambientais pela incidência de dengue e número de equipes de saúde da família no bairro e no estilo de vida pelo tempo semanal de prática de AFMV e IMC. (AU)

Floral sources to Tetragonisca angustula (Hymenoptera: Apidae) and their pollen morphology in a Southeastern Brazilian Atlantic Forest

The stingless bees are important flowers visitors of several plant species, due to their feeding habits and foraging behavior, constituting an important group to maintain biodiversity and the dynamics of tropical communities. Among stingless bees, Tetragonisca angustula is widely distributed in tropical habitats, and has been considered an important pollinator of different plant families. To support a rational economic use of this group, there is a need to characterize the plant species that represent important sources as part of their diet, as preferred, alternative or casual food sources. The aim of this survey was to distinguish the plant species that T. angustula visited most often. The study was undertaken in four regions of the Atlantic Rainforest in Rio de Janeiro state (Brazil) over a year from March 2008 to February 2009. For this, we collected bees, flowering plants and bee pollen loads from the four sites, and evaluated pollen morphology in the laboratory. Field observations showed the presence of plants belonging to ten different families and pollen loads showed the presence of pollen types belonging to 26 plant families. There were strong differences between pollen types, especially regarding pollen grain shape. The present survey suggests a high value of these plant species as trophic resources for the T. angustula in the understory of Atlantic Rainforest. Changes in these fragments of this forest may compromise the availability of resources for Tetragonisca angustula species and other stingless bees.

Para apoyar el uso racional de las abejas sin aguijón, es necesario conocer las especies de plantas que actúan como fuentes de recursos para estas abejas en su ambiente natural. El objetivo de este estudio fue identificar las especies de plantas que fueron visitadas con mayor frecuencia por abejas Tetragonisca angustula y describir los granos de polen de estas plantas. El estudio se realizó en la Mata Atlántica, donde se recogieron las abejas, las plantas con flores y el polen de las cargas corbiculares de las abejas obreras. La observación de campo mostró la presencia de plantas pertenecientes a diez familias y las cargas de polen mostraron la presencia de tipos de polen pertenecientes a 26 familias botánicas. Hubo grandes diferencias entre los tipos de polen, sobre todo teniendo en cuenta la ornamentación de los granos de polen. Este estudio sugiere un alto valor de estas especies de plantas como recursos tróficos para las abejas jataí en el sub-bosque de la Mata Atlántica. Las alteraciones de los fragmentos de bosque pueden afectar la disponibilidad de recursos para Tetragonisca angustula y otras abejas sin aguijón y ser un gran obstáculo para la su crianza sostenible.