Introdução: Evidências apontam que a ingestão exacerbada de frutose pode desencadear distúrbios característicos da síndrome metabólica. Objetivos: Analisar os efeitos da ingestão de dieta rica em frutose sobre aspectos metabólicos de ratos da linhagem Wistar. Adicionalmente, verificar a capacidade aeróbia através da identificação da máxima fase estável de lactato (MFEL). Métodos: Dezesseis ratos foram separados em dois grupos de oito animais: a) controle, alimentados com dieta balanceada, e b) frutose, alimentados com dieta rica em frutose. Foram analisadas a tolerância à glicose (área sob a curva de glicose durante teste de tolerância à glicose), sensibilidade à insulina (taxa de remoção da glicose sérica após sobrecarga exógena de insulina), perfil lipídico sérico e concentração de lactato sanguíneo [lac]s durante exercício na intensidade da MFEL. Resultados: Teste t não pareado (p < 0,05) revelou diferença para a tolerância à glicose e triglicérides, porém não houve diferença na sensibilidade à insulina e na [lac]s. Anova one way com post hoc de Newman-Keuls (p < 0,05) revelou diferença para a cinética da glicose durante o teste de tolerância, mas não para a cinética do lactato durante exercício na MSSL. Conclusão: As alterações fisiológicas provocadas pela dieta rica em frutose e inerentes à síndrome metabólica não prejudicam a capacidade aeróbia de ratos.Palavras-chave: máxima fase estável de lactato, síndrome metabólica, exercício. ABSTRACTIntroduction: Evidence points that exacerbated ingestion of fructose may trigger disturbs characteristic of the metabolic syndrome. Objectives: To analyze the effects of a fructose rich diet on metabolic aspects of Wistar lineage rats. Additionally, to verify the aerobic capacity, through the identification of the maximal lactate steady state (MSSL). Procedures: Sixteen rats were separated in two groups of eight animals: a) Control, fed a balanced diet, and b) fructose, fed a fructose-rich diet. The glucose tolerance, (area under serum glucose during a glucose tolerance test), insulin sensibility (glucose disappearance rate after exogenous insulin administration), serum lipid profile and blood lactate concentration [lac]b during exercise at MSSL intensity, have been analyzed. Results: Non-paired t test (p<0.05) revealed difference between groups in the area under the curve of glucose and serum triglycerides, no difference in insulin sensibility or in [lac]b was detected, though. One-way ANOVA with Newman Keuls post hoc revealed difference in the glucose kinetics during tolerance test, but not in the lactate kinetics during the MSSL. Conclusion: The physiological alterations promoted by fructose-rich diet and intrinsic to the metabolic syndrome do not harm the aerobic capacity of rats.
RESUMO -Este estudo analisa as barreiras percebidas à prática de atividade física e os estágios de mudança de comportamento de idosos institucionalizados preservados cognitivamente. Trinta participantes responderam ao Mini-Exame do Estado Mental, ao Questionário sobre Estágios de Mudança de Comportamento e ao Questionário sobre Barreiras à Prática de Atividade Física. Os resultados mostraram que poucos idosos institucionalizados apresentam uma alta percepção de descrença nos benefícios da atividade física. Entretanto, muito poucos praticam atividades físicas e a maioria não pretende incluí-las em seu estilo de vida. O estágio de comportamento no qual se encontram pode estar sendo mediado pela percepção de barreiras. Conclui-se, coerentemente com as principais barreiras reportadas, que a promoção de atividade física para o idoso institucionalizado deve, prioritariamente, enfatizar a conscientização sobre os riscos do sedentarismo e os benefícios da prática mesmo na presença de doenças, bem como preparar um ambiente seguro e sem gasto financeiro individual.Palavras-chave: atividade física; envelhecimento; institucionalização; comportamento; cognição. Behavior and Barriers: Physical Activity in Institutionalized ElderlyABSTRACT -This study analyzes the barriers perceived in relation to the practice of physical activity and stages of behavior changes in institutionalized and cognitively preserved elderly. Thirty volunteers answered to the Mini-Exam of Mental State, the Questionnaire on Stages of Behavior Changes, and the Questionnaire on Barriers to Physical Activity. The results showed that few institutionalized elderly present a high perception of disbelief on physical activity benefits. However, very few of them are engaged in it and the majority of them do not intend to include it in their lifestyle. The current stage of behavior can be mediated by the perception of barriers. It was concluded, according to the main reported barriers, that the promotion of physical activity to institutionalized elderly should emphasizes, as priorities, the awareness of the risks of a sedentary lifestyle and the benefits of physical activity even in the presence of diseases, in addition to the preparation of a safe environment and without individual costs.
RESUMOA capacidade funcional decresce com o envelhecimento, porém a atividade física pode melhorar a aptidão funcional e a habilidade para realizar tarefas da vida diária. Este estudo analisou os efeitos de um programa de dança nos componentes isolados e no índice de aptidão funcional geral (IAFG). Participaram 28 mulheres (62,28 ± 6,93 anos) que realizaram três sessões de dança por semana, durante uma hora, por quatro meses. As voluntárias foram avaliadas pela bateria de testes motores da AAHPERD. A análise foi realizada por meio de estatística descritiva, de teste t de Student pareado e de teste de Wilcoxon. Ocorreram ganhos significativos após treinamento na AGILEQ (s): 24,5±3,5/20,1±2,8*, RESISFOR (rep): 30,8±4,0/32,7±4,6* e IAFG (pts): 364,0/375,0* e manutenção das outros componentes da aptidão funcional. Conclui-se que um treinamento de quatro meses de dança é efetivo para melhorar a AGILEQ, RESISFOR e o IAFG de mulheres de 50 a 80 anos.Palavras-chave: Dança. Envelhecimento. Aptidão física. * ABSTRACT Functional capacity is reduced in aging. However, physical activity may improve the functional fitness and the ability to perform daily life's physical tasks. The purpose of this study was to analyze the effects of dance training on functional fitness components and functional fitness level index (FFLI). Twenty-eight women (62.28 ± 6.93 years) participated in 4-months of dance training, with 3 sessions/week of 1 hour. The volunteers were assessed by motor test battery of AAHPERD. The analysis was conducted through descriptive statistics, Student paired t-test and Wilcoxon test. There were significant gains after training in AGILEQ (s): 24.5±3.5/ 20.1±2.8*, RESISTRE (rep): 30.8±4.0/32.7±4.6* e IAFG (pt.): 364.0 /375.0* and maintenance of other components of functional fitness. The results suggested that training dance for a period of four months is effective to improve AGILEQ, RESISTRE e IAFG of women with 50 to 80 years.
Problem. The clinical presentation of coronavirus disease (COVID-19) in children remains controversial. This study analyzed viral excretion in children and adolescents with mild-to-moderate disease and their household contacts, who were treated in Jundiaí, Brazil between March and November 2020, before vaccination was available. Method. This was a prospective, observational, and descriptive cohort study. Nasopharyngeal swabs and blood were collected six times at weekly intervals. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) tests and immunoglobulin (Ig) G and IgA assays were used to test for COVID-19. Results. Overall, 419 children and 253 adults were enrolled. There was a significant correlation between qRT-PCR confirmation and the 1 to <5 years age group ( p = 0.038 ). Serology changes or recent infections were detected significantly in children <6 months (IgG, p = 0.006 ; IgA, p = 0.001 ) and >5 years of age (IgA, p = 0.040 ; IgG, p = 0.031 ). The mean and median time-to-positivity (using qRT-PCR) was 17 days, with a minimum of 6 and a maximum of 34. Among adults, the mean and median time-to-positivity was 12.6 and 9 days, respectively, with a minimum of 6 and a maximum of 45. Conclusion. Oligosymptomatic conditions may delay diagnosis and facilitate viral transmission. Pediatric-focused research is required, and specific protective measures for children <6 months of age should be considered.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.