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Cardiovascular physiology and autonomic heart control principles: the use of a station rotation strategy to recall basic cardiovascular knowledge among exercise science students
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Oliveira, Diego Sales de
; Carrascoza, Lucas Sertorio
; Almeida, Ney Robson de
; Brito, Leandro Campos de
; Marques, Marcelo
; Alves, Leandro Silva
; Brum, Patricia Chakur
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Abstract Aim: Cardiovascular physiology learned by exercise science students is often quickly forgotten. We tested whether a state rotation model would help students to recall key principles of Cardiovascular Physiology (CV). Methods: Seventy-one undergraduate students enrolled in the Exercise Physiology Course at the School of Physical Education and Sport, University of São Paulo, participated in the study. The students were randomly assigned into one of 4 stations, dedicated to recalling the concepts of the heart as a pump (e.g. preload, post-load, and contractility; station 1) and hemodynamics (e.g. serial and parallel conductance; station 2) by using the educational tool. Heart rate (HR) control by sympathetic nervous system activation (station 3) and HR control by vagal activation (station 4) were assessed by quantifying HR response to the Stroop color and word test and during face immersion in cold water, respectively. To evaluate the efficacy of the intervention, we used a Socrative app to launch eight multiple-choice questions before (PRE) and after (POST) the student's station rotation. The questions were related to the basic principles of exercise physiology and its consequences on the cardiovascular system. Results: The 4-station average score (% of corrected answers) achieved after the station rotation was higher than the score achieved before (71.21%, SD 14.50 vs. 31.07%, SD 18.04; for POST and PRE, respectively p < 0.005). Considering specific stations, the lowest score of corrected answers before the rotation was observed at station 2- hemodynamics when compared with station 1-heart as a pump and station 3/4 - autonomic control (18.9%, SD 0.9 vs. 46.5, SD 24.1 and 34.8, SD 2.1 for hemodynamics, heart as a pump and autonomic control, respectively). Interestingly, after the rotation, there was a significant increase in corrected scores for all stations (33.9, SD 9.8; 80.5, SD 4.6 and 90.2, SD 2.3, for hemodynamics, heart as a pump, and autonomic control, respectively). Conclusion: Our results suggest that the use of the educational tool was effective to recall CV principles that are essential to a better understanding of the CV responses to exercise and applying the concepts in exercise testing and prescription for different populations.
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Recommendations by the Scientific Department of Neuroimmunology of the Brazilian Academy of Neurology (DCNI/ABN) and the Brazilian Committee for Treatment and Research in Multiple Sclerosis and Neuroimmunological Diseases (BCTRIMS) on vaccination in general and specifically against SARS-CoV-2 for patients with demyelinating diseases of the central nervous system
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Becker, Jefferson
; Ferreira, Lis Campos
; Damasceno, Alfredo
; Bichuetti, Denis Bernardi
; Christo, Paulo Pereira
; Callegaro, Dagoberto
; Peixoto, Marco Aurélio Lana
; Sousa, Nise Alessandra De Carvalho
; Almeida, Sérgio Monteiro De
; Adoni, Tarso
; Santiago-Amaral, Juliana
; Junqueira, Thiago
; Pereira, Samira Luisa Apóstolos
; Gomes, Ana Beatriz Ayroza Galvão Ribeiro
; Pitombeira, Milena
; Paolilo, Renata Barbosa
; Grzesiuk, Anderson Kuntz
; Piccolo, Ana Claudia
; D´Almeida, José Arthur Costa
; Gomes Neto, Antonio Pereira
; Oliveira, Augusto Cesar Penalva De
; Oliveira, Bianca Santos De
; Tauil, Carlos Bernardo
; Vasconcelos, Claudia Ferreira
; Kaimen-Maciel, Damacio
; Varela, Daniel
; Diniz, Denise Sisterolli
; Oliveira, Enedina Maria Lobato De
; Malfetano, Fabiola Rachid
; Borges, Fernando Elias
; Figueira, Fernando Faria Andrade
; Gondim, Francisco De Assis Aquino
; Passos, Giordani Rodrigues Dos
; Silva, Guilherme Diogo
; Olival, Guilherme Sciascia Do
; Santos, Gutemberg Augusto Cruz Dos
; Ruocco, Heloisa Helena
; Sato, Henry Koiti
; Soares Neto, Herval Ribeiro
; Cortoni Calia, Leandro
; Gonçalves, Marcus Vinícius Magno
; Vecino, Maria Cecilia Aragón De
; Pimentel, Maria Lucia Vellutini
; Ribeiro, Marlise De Castro
; Boaventura, Mateus
; Parolin, Mônica Koncke Fiuza
; Melo, Renata Brant De Souza
; Lázaro, Robson
; Thomaz, Rodrigo Barbosa
; Kleinpaul, Rodrigo
; Dias, Ronaldo Maciel
; Gomes, Sidney
; Lucatto, Simone Abrante
; Alves-Leon, Soniza Vieira
; Fukuda, Thiago
; Ribeiro, Taysa Alexandrino Gonsalves Jubé
; Winckler, Thereza Cristina D’ávila
; Fragoso, Yara Dadalti
; Nascimento, Osvaldo José Moreira Do
; Ferreira, Maria Lucia Brito
; Mendes, Maria Fernanda
; Brum, Doralina Guimarães
; Glehn, Felipe Von
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RESUMO O DC de Neuroimunologia da ABN e o BCTRIMS trazem, nesse documento, as recomendações sobre vacinação da população com doenças desmielinizantes do sistema nervoso central (SNC) contra infecções em geral e contra o coronavírus da síndrome respiratória aguda grave 2 (SARS-CoV-2), causador da COVID-19. Destaca-se a gravidade do atual momento frente ao avanço da COVID-19 em nosso País, o que torna mais evidente e importante a criação de guia de referência para orientação aos médicos, pacientes e autoridades de saúde pública quanto à vacinação, meio efetivo e seguro no controle de determinadas doenças infecciosa. O DCNI/ABN e o BCTRIMS recomendam que os pacientes com doenças desmielinizantes do SNC (ex., EM e NMOSD) sejam constantemente monitorados, quanto a atualização do seu calendário vacinal, especialmente, no início ou antes da mudança do tratamento com uma droga modificadora de doença (DMD). É importante também salientar que as vacinas são seguras e os médicos devem estimular o seu uso em todos os pacientes. Evidentemente, deve ser dada especial atenção às vacinas com vírus vivos atenuados. Por fim, é importante que os médicos verifiquem qual DMD o paciente está em uso e quando foi feita a sua última dose, pois cada fármaco pode interagir de forma diferente com a indução da resposta imune.
ABSTRACT The Scientific Department of Neuroimmunology of the Brazilian Academy of Neurology (DCNI/ABN) and Brazilian Committee for Treatment and Research in Multiple Sclerosis and Neuroimmunological Diseases (BCTRIMS) provide recommendations in this document for vaccination of the population with demyelinating diseases of the central nervous system (CNS) against infections in general and against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes COVID-19. We emphasize the seriousness of the current situation in view of the spread of COVID-19 in our country. Therefore, reference guides on vaccination for clinicians, patients, and public health authorities are particularly important to prevent some infectious diseases. The DCNI/ABN and BCTRIMS recommend that patients with CNS demyelinating diseases (e.g., MS and NMOSD) be continually monitored for updates to their vaccination schedule, especially at the beginning or before a change in treatment with a disease modifying drug (DMD). It is also important to note that vaccines are safe, and physicians should encourage their use in all patients. Clearly, special care should be taken when live attenuated viruses are involved. Finally, it is important for physicians to verify which DMD the patient is receiving and when the last dose was taken, as each drug may affect the induction of immune response differently.
https://doi.org/10.1590/0004-282x-anp-2021-0162
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3.
Práticas de ressuscitação volêmica em unidades de terapia intensiva brasileiras: uma análise secundária do estudo Fluid-TRIPS
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Freitas, Flavio Geraldo Rezende de
; Hammond, Naomi
; Li, Yang
; Azevedo, Luciano Cesar Pontes de
; Cavalcanti, Alexandre Biasi
; Taniguchi, Leandro
; Gobatto, André
; Japiassú, André Miguel
; Bafi, Antonio Tonete
; Mazza, Bruno Franco
; Noritomi, Danilo Teixeira
; Dal-Pizzol, Felipe
; Bozza, Fernando
; Salluh, Jorge Ibrahin Figueira
; Westphal, Glauco Adrieno
; Soares, Márcio
; Assunção, Murillo Santucci César de
; Lisboa, Thiago
; Lobo, Suzana Margarete Ajeje
; Barbosa, Achilles Rohlfs
; Ventura, Adriana Fonseca
; Souza, Ailson Faria de
; Silva, Alexandre Francisco
; Toledo, Alexandre
; Reis, Aline
; Cembranel, Allan
; Rea Neto, Alvaro
; Gut, Ana Lúcia
; Justo, Ana Patricia Pierre
; Santos, Ana Paula
; Albuquerque, André Campos D. de
; Scazufka, André
; Rodrigues, Antonio Babo
; Fernandino, Bruno Bonaccorsi
; Silva, Bruno Goncalves
; Vidal, Bruno Sarno
; Pinheiro, Bruno Valle
; Pinto, Bruno Vilela Costa
; Feijo, Carlos Augusto Ramos
; Abreu Filho, Carlos de
; Bosso, Carlos Eduardo da Costa Nunes
; Moreira, Carlos Eduardo Nassif
; Ramos, Carlos Henrique Ferreira
; Tavares, Carmen
; Arantes, Cidamaiá
; Grion, Cintia
; Mendes, Ciro Leite
; Kmohan, Claudio
; Piras, Claudio
; Castro, Cristine Pilati Pileggi
; Lins, Cyntia
; Beraldo, Daniel
; Fontes, Daniel
; Boni, Daniela
; Castiglioni, Débora
; Paisani, Denise de Moraes
; Pedroso, Durval Ferreira Fonseca
; Mattos, Ederson Roberto
; Brito Sobrinho, Edgar de
; Troncoso, Edgar M. V.
; Rodrigues Filho, Edison Moraes
; Nogueira, Eduardo Enrico Ferrari
; Ferreira, Eduardo Leme
; Pacheco, Eduardo Souza
; Jodar, Euzebio
; Ferreira, Evandro L. A.
; Araujo, Fabiana Fernandes de
; Trevisol, Fabiana Schuelter
; Amorim, Fábio Ferreira
; Giannini, Fabio Poianas
; Santos, Fabrício Primitivo Matos
; Buarque, Fátima
; Lima, Felipe Gallego
; Costa, Fernando Antonio Alvares da
; Sad, Fernando Cesar dos Anjos
; Aranha, Fernando G.
; Ganem, Fernando
; Callil, Flavio
; Costa Filho, Francisco Flávio
; Dall´Arto, Frederico Toledo Campo
; Moreno, Geovani
; Friedman, Gilberto
; Moralez, Giulliana Martines
; Silva, Guilherme Abdalla da
; Costa, Guilherme
; Cavalcanti, Guilherme Silva
; Cavalcanti, Guilherme Silva
; Betônico, Gustavo Navarro
; Betônico, Gustavo Navarro
; Reis, Hélder
; Araujo, Helia Beatriz N.
; Hortiz Júnior, Helio Anjos
; Guimaraes, Helio Penna
; Urbano, Hugo
; Maia, Israel
; Santiago Filho, Ivan Lopes
; Farhat Júnior, Jamil
; Alvarez, Janu Rangel
; Passos, Joel Tavares
; Paranhos, Jorge Eduardo da Rocha
; Marques, José Aurelio
; Moreira Filho, José Gonçalves
; Andrade, Jose Neto
; Sobrinho, José Onofre de C
; Bezerra, Jose Terceiro de Paiva
; Alves, Juliana Apolônio
; Ferreira, Juliana
; Gomes, Jussara
; Sato, Karina Midori
; Gerent, Karine
; Teixeira, Kathia Margarida Costa
; Conde, Katia Aparecida Pessoa
; Martins, Laércia Ferreira
; Figueirêdo, Lanese
; Rezegue, Leila
; Tcherniacovsk, Leonardo
; Ferraz, Leone Oliveira
; Cavalcante, Liane
; Rabelo, Ligia
; Miilher, Lilian
; Garcia, Lisiane
; Tannous, Luana
; Hajjar, Ludhmila Abrahão
; Paciência, Luís Eduardo Miranda
; Cruz Neto, Luiz Monteiro da
; Bley, Macia Valeria
; Sousa, Marcelo Ferreira
; Puga, Marcelo Lourencini
; Romano, Marcelo Luz Pereira
; Nobrega, Marciano
; Arbex, Marcio
; Rodrigues, Márcio Leite
; Guerreiro, Márcio Osório
; Rocha, Marcone
; Alves, Maria Angela Pangoni
; Alves, Maria Angela Pangoni
; Rosa, Maria Doroti
; Dias, Mariza D’Agostino
; Martins, Miquéias
; Oliveira, Mirella de
; Moretti, Miriane Melo Silveira
; Matsui, Mirna
; Messender, Octavio
; Santarém, Orlando Luís de Andrade
; Silveira, Patricio Júnior Henrique da
; Vassallo, Paula Frizera
; Antoniazzi, Paulo
; Gottardo, Paulo César
; Correia, Paulo
; Ferreira, Paulo
; Torres, Paulo
; Silva, Pedro Gabrile M. de Barros e
; Foernges, Rafael
; Gomes, Rafael
; Moraes, Rafael
; Nonato filho, Raimundo
; Borba, Renato Luis
; Gomes, Renato V
; Cordioli, Ricardo
; Lima, Ricardo
; López, Ricardo Pérez
; Gargioni, Ricardo Rath de Oliveira
; Rosenblat, Richard
; Souza, Roberta Machado de
; Almeida, Roberto
; Narciso, Roberto Camargo
; Marco, Roberto
; waltrick, Roberto
; Biondi, Rodrigo
; Figueiredo, Rodrigo
; Dutra, Rodrigo Santana
; Batista, Roseane
; Felipe, Rouge
; Franco, Rubens Sergio da Silva
; Houly, Sandra
; Faria, Sara Socorro
; Pinto, Sergio Felix
; Luzzi, Sergio
; Sant’ana, Sergio
; Fernandes, Sergio Sonego
; Yamada, Sérgio
; Zajac, Sérgio
; Vaz, Sidiner Mesquita
; Bezerra, Silvia Aparecida Bezerra
; Farhat, Tatiana Bueno Tardivo
; Santos, Thiago Martins
; Smith, Tiago
; Silva, Ulysses V. A.
; Damasceno, Valnei Bento
; Nobre, Vandack
; Dantas, Vicente Cés de Souza
; Irineu, Vivian Menezes
; Bogado, Viviane
; Nedel, Wagner
; Campos Filho, Walther
; Dantas, Weidson
; Viana, William
; Oliveira Filho, Wilson de
; Delgadinho, Wilson Martins
; Finfer, Simon
; Machado, Flavia Ribeiro
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Revista Brasileira de Terapia Intensiva
- Métricas do periódico
RESUMO Objetivo: Descrever as práticas de ressuscitação volêmica em unidades de terapia intensiva brasileiras e compará-las com as de outros países participantes do estudo Fluid-TRIPS. Métodos: Este foi um estudo observacional transversal, prospectivo e internacional, de uma amostra de conveniência de unidades de terapia intensiva de 27 países (inclusive o Brasil), com utilização da base de dados Fluid-TRIPS compilada em 2014. Descrevemos os padrões de ressuscitação volêmica utilizados no Brasil em comparação com os de outros países e identificamos os fatores associados com a escolha dos fluidos. Resultados: No dia do estudo, foram incluídos 3.214 pacientes do Brasil e 3.493 pacientes de outros países, dos quais, respectivamente, 16,1% e 26,8% (p < 0,001) receberam fluidos. A principal indicação para ressuscitação volêmica foi comprometimento da perfusão e/ou baixo débito cardíaco (Brasil 71,7% versus outros países 56,4%; p < 0,001). No Brasil, a percentagem de pacientes que receberam soluções cristaloides foi mais elevada (97,7% versus 76,8%; p < 0,001), e solução de cloreto de sódio a 0,9% foi o cristaloide mais comumente utilizado (62,5% versus 27,1%; p < 0,001). A análise multivariada sugeriu que os níveis de albumina se associaram com o uso tanto de cristaloides quanto de coloides, enquanto o tipo de prescritor dos fluidos se associou apenas com o uso de cristaloides. Conclusão: Nossos resultados sugerem que cristaloides são usados mais frequentemente do que coloides para ressuscitação no Brasil, e essa discrepância, em termos de frequências, é mais elevada do que em outros países. A solução de cloreto de sódio 0,9% foi o cristaloide mais frequentemente prescrito. Os níveis de albumina sérica e o tipo de prescritor de fluidos foram os fatores associados com a escolha de cristaloides ou coloides para a prescrição de fluidos.
Abstract Objective: To describe fluid resuscitation practices in Brazilian intensive care units and to compare them with those of other countries participating in the Fluid-TRIPS. Methods: This was a prospective, international, cross-sectional, observational study in a convenience sample of intensive care units in 27 countries (including Brazil) using the Fluid-TRIPS database compiled in 2014. We described the patterns of fluid resuscitation use in Brazil compared with those in other countries and identified the factors associated with fluid choice. Results: On the study day, 3,214 patients in Brazil and 3,493 patients in other countries were included, of whom 16.1% and 26.8% (p < 0.001) received fluids, respectively. The main indication for fluid resuscitation was impaired perfusion and/or low cardiac output (Brazil: 71.7% versus other countries: 56.4%, p < 0.001). In Brazil, the percentage of patients receiving crystalloid solutions was higher (97.7% versus 76.8%, p < 0.001), and 0.9% sodium chloride was the most commonly used crystalloid (62.5% versus 27.1%, p < 0.001). The multivariable analysis suggested that the albumin levels were associated with the use of both crystalloids and colloids, whereas the type of fluid prescriber was associated with crystalloid use only. Conclusion: Our results suggest that crystalloids are more frequently used than colloids for fluid resuscitation in Brazil, and this discrepancy in frequencies is higher than that in other countries. Sodium chloride (0.9%) was the crystalloid most commonly prescribed. Serum albumin levels and the type of fluid prescriber were the factors associated with the choice of crystalloids or colloids for fluid resuscitation.
https://doi.org/10.5935/0103-507x.20210028
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4.
ASSOCIATION BETWEEN PHYSICAL ACTIVITY PRACTICE AND FOOD CONSUMPTION IN SCHOOL TEENAGERS
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Pinho, Lucineia de
; Oliva, Henrique Nunes Pereira
; Pereira, Anne Christine Alves
; Godinho, Ana Clara Veloso Campos de Quadros
; Magalhães, Isaac Brandão Bittencourt
; Rocha, Leandro Rodrigues Ramos
; Brito, Maria Fernanda Santos Figueiredo
; Silva, Rosângela Ramos Veloso
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RESUMO A adolescência é um período de transição, marcado por hábitos que podem influenciar a saúde dos indivíduos a longo prazo. Este estudo objetivou analisar a associação entre a prática de atividade física e o consumo alimentar em adolescentes. Trata-se de estudo transversal com amostra probabilística de 1.570 adolescentes escolares de Montes Claros, MG. Analisou-se nível de atividade física e consumo de frutas, leguminosas, guloseimas e refrigerante. Foi realizada regressão logística (nível de significância 5%). Entre os adolescentes 80,8% foram classificados como pouco ativos e praticavam atividade física por pelo menos 60 minutos em menos do que cinco dias por semana. Em relação à alimentação, 85,2% e 34,3% dos adolescentes relataram consumo de leguminosas e frutas com frequência menor que três vezes por semana, respectivamente. O consumo cinco vezes por semana ou mais de guloseimas foi de 64,1% e refrigerantes de 90,3%. Os que consumiam frutas três vezes por semana ou menos apresentaram chance 40% maior de serem pouco ativos. Os que consumiam refrigerante com frequência superior a cinco vezes por semana apresentaram chance duas vezes mais alta de serem pouco ativos. Baixos níveis de atividade física foram associados ao consumo de frutas menor ou igual a três vezes por semana e de refrigerantes superior a cinco vezes por semana. Há necessidade de incentivo à promoção de hábitos de vida saudáveis quanto à prática de atividade física e ao consumo alimentar entre os adolescentes nos contextos escolar e familiar.
ABSTRACT Adolescence is a period of transition, marked by habits that can influence the health of individuals in the long run. This study aimed to analyze the association between physical activity and food consumption in adolescents. This is a cross-sectional study with a probabilistic sample of 1.570 school adolescents from Montes Claros, MG, Brazil. The level of physical activity and consumption of fruits, vegetables, sweets, and soda/soft drinks was analyzed. Logistic regression was performed (significance level 5%). Among adolescents, 80.8% were classified as not active and practiced physical activity for at least 60 minutes in less than five days a week. In relation to food, 85.2% and 34.3% of adolescents reported consuming legumes and fruits less than three times a week, respectively. Consumption five times a week or more of treats was 64.1% and soft drinks 90.3%. Those who consumed fruit three times a week or less were 40% more likely to be less active. Those who consumed soda more than five times a week were twice as likely to be little active. Low levels of physical activity were associated with consumption of fruit less than or equal to three times a week and soft drinks greater than five times a week. There is a need to encourage the promotion of healthy lifestyle habits regarding the practice of physical activity and food consumption among adolescents, in school and family contexts.
5.
The close relationship between sudden loss of smell and COVID-19
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Joffily, Lucia
; Ungierowicz, Aluan
; David, Andrea Goldwasser
; Melo, Bruna
; Brito, César Leandro Terra
; Mello, Luciane
; Santos, Priscilla de Souza Campos dos
; Pezato, Rogério
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Brazilian Journal of Otorhinolaryngology
- Métricas do periódico
Resumo Introdução: O número real de casos Covid-19 pode estar subestimado, pois vários países têm dificuldade em oferecer exames laboratoriais para toda a população. Portanto, encontrar um sintoma com alto valor preditivo ajudaria nas estratégias de diagnóstico e isolamento. Objetivo: Correlacionar a perda súbita do olfato no contexto da pandemia da Covid-19 com os resultados dos testes de diagnóstico da Covid-19. Método: Trata-se de um estudo observacional transversal. Um questionário on-line foi enviado digitalmente a 725 voluntários que apresentaram perda súbita parcial ou total do sentido de olfato de março a abril de 2020 no Brasil. Resultados: A perda súbita total ou parcial do sentido do olfato apresentou alto valor preditivo positivo para o diagnóstico de Covid-19, durante a pandemia de Covid-19 no Brasil (88,8%). Não houve diferenças entre os grupos positivos e negativos em relação às características demográficas e clínicas, como presença de alergia, rinite e tempo de recuperação olfativa. Conclusão: A identificação de perda súbita do olfato durante a pandemia de Covid-19 pode servir como sintoma sentinela e pode ser um alerta para estabelecer medidas para impedir a transmissão da doença.
Abstract Introduction: The real number of COVID-19 cases may be underestimated since several countries have difficulty offering laboratory tests for all the population. Therefore, finding a symptom with a high predictive value would help in diagnostic and isolation strategies. Objective: To correlate the sudden loss of the sense of smell in the context of the COVID-19 pandemic with results of diagnostic tests for COVID-19. Methods: This is a cross-sectional observational study. An online questionnaire was digitally addressed to 725 outpatients in Brazil who reported partial or total sudden loss of the sense of smell from March to April 2020. Results: Total or partial sudden loss of the sense of smell showed high positive predictive value for COVID-19 diagnosis, during the COVID-19 pandemic in Brazil (88.8%). There were no differences between groups tested positive and negative in regard to demographic and clinical characteristics such as presence of allergy, rhinitis, neither to olfactory recovery time. Conclusion: The identification of sudden loss of the sense of smell during COVID-19 pandemic may serve as a sentinel symptom and may be a warning to establish measures to prevent the transmission of the disease.
https://doi.org/10.1016/j.bjorl.2020.05.002
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6.
Prescrição de caminhada não supervisionada, risco cardiovascular e aptidão física
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Queiroz, Andréia Cristiane Carrenho
; Brito, Leandro Campos de
; Santos, Mayara Alves dos
; Fecchio, Rafael Yokoyama
; Stocco, Ana Luiza Bonilha
; Bezerra, Alan Irwin
; Cavali, Andreza Aguida Pereira
; Modesto, Bruno Timóteo
; Cardoso Junior, Crivaldo Gomes
; Bartholomeu, Teresa
; Tinucci, Tais
; Forjaz, Claudia Lúcia de Moraes
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Revista Brasileira de Educação Física e Esporte
- Métricas do periódico
OBJETIVO: Avaliar, numa situação real de atuação prática, o efeito da prescrição individualizada de caminhada sem supervisão da prática sobre o risco cardiovascular e a aptidão física de usuários de um parque público. MÉTODOS: 186 sujeitos (62 ± 10 anos) foram orientados a caminhar pelo menos 3x/sem, por 30 min, com intensidade de 50 a 80% da frequência cardíaca de reserva e a fazer alongamentos antes e após a caminhada. A aptidão física e os fatores de risco cardiovascular foram avaliados pré e pós-intervenção. A análise dos dados foi dividida em duas fases: 1) análise na amostra total; 2) análise nos indivíduos com fatores de risco alterados. Os dados foram comparados pelo teste t pareado. RESULTADOS: Na amostra total, a aptidão física melhorou nos testes de marcha estacionária (+8,1 ± 14,5 passos, p < 0,05), impulsão vertical (+0,5 ± 2,7 cm, p < 0,05), flexibilidade lombar (+1,1 ± 4,7 cm, p < 0,05) e flexibilidade de ombro (+1,2 ± 2,1 cm, p < 0,05). Não ocorreram alterações nos fatores de risco cardiovascular, com exceção da redução da pressão arterial diastólica (-0,9 ± 6,0 mmHg, p < 0,05). Entretanto, nos subgrupos com fatores alterados, observou-se reduções significantes das pressões arteriais sistólica e diastólica (-13,3 ± 16,9 e -5,8 ± 8,3 mmHg, p < 0,05, respectivamente) nos hipertensos, da colesterolemia total (-19,5 ± 33,5 mg/dl, p < 0,05) nos hipercolesterolêmicos e da circunferência da cintura (-1,0 ± 4,7 cm, p < 0,05) e do índice cintura-quadril (-0,01 ± 0,04, p < 0,05) nos com obesidade central. CONCLUSÃO: Numa situação real de atuação, a prescrição de caminhada sem supervisão da prática foi efetiva em melhorar a aptidão física da amostra geral e em diminuir o risco cardiovascular específico dos indivíduos com fatores de risco.
OBJECTIVE: To evaluate, at a real practical condition, the effects of individualized prescription of walking without supervision of practice on cardiovascular risk and fitness in users of a public park. METHODS: One hundred, eighty six subjects (62 ± 10 years) were instructed to walk at least 3 times/week, during 30min, at an intensity of 50-80% of heart rate reserve and encouraged to realize stretching exercises before and after walking. Physical fitness and cardiovascular risk factors were evaluated pre and post-intervention. Data analyze was divided in 2 phases: 1) role sample analysis; and 2) analysis on subjects with altered cardiovascular risk factors. Data were compared by paired t test. RESULTS: Considering the whole sample, physical fitness improved in the following tests: stationary gate (8.1 ± 14.5 paces, p < 0.05), vertical jump (0.5 ± 2.7 cm, p < 0.05), lumbar flexibility (1.1 ± 4.7 cm, p < 0.05) and shoulder flexibility (1.2 ± 2.1 cm, p < 0.05). No significant change was observed in cardiovascular risk factors, excepted by a reduction on diastolic blood pressure (-0.9 ± 6.0 mmHg, p < 0.05). On the other hand, considering the subjects with altered cardiovascular risk factors, a significant reduction was observed on systolic and diastolic blood pressures (-13.3 ± 16.9 and -5.8 ± 8.3 mmHg, p < 0.05, respectively) in hypertensive subjects, on total cholesterol (-19.5 ± 33.5 mg/dl, p < 0.05) in hypercholesterolemic subjects, and on waist circumference (-1.0 ± 4.7 cm, p < 0.05) and waist-hip index (0.01 ± 0.04, p < 0.05) in subjects with central obesity. CONCLUSION: Under real practical circumstances, the prescription of unsupervised walking was effective in improving physical fitness in general sample and in reducing the specific cardiovascular risk in subjects who have altered cardiovascular risk factors.
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