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1. Analyzing Teachers' Knowledge Based on Their Approach to the Information Provided by Technology

Author

Rocha, Helena

Abstract

Teachers' knowledge plays a central role in technology integration. In this study we analyze situations, where there is some divergence between the mathematical results and the information offered by the graphing calculator (lack of mathematical fidelity), putting the focus in the teachers and in their approaches. The goal of this study is to analyze, in the light of knowledge for teaching mathematics with technology (KTMT) model, the teachers' professional knowledge, assuming the situations of lack of mathematical fidelity as having the potential to reveal some characteristics of their knowledge. Specifically, considering the teaching of functions at 10th grade (age 16), we intend to analyze: (1) What knowledge do the teachers have of technology and of its mathematical fidelity? (2) What can the teachers' options related to situations of lack of mathematical fidelity tell us about their knowledge in other KTMT domains? The study adopts a qualitative and interpretative approach based on the case studies of two teachers. Data were collected by interviews and class observation, being the analysis guided by the KTMT model. The main result points to the relevance of the mathematics and technology knowledge. However, there is evidence of some difficulties to integrate the information provided by the technology with the mathematics, and also of some interference of the teaching and learning and technology knowledge, and specifically of the knowledge related to the students. This suggests that the analysis of the teachers' actions in relation to situations of lack of mathematical fidelity, can be useful to characterize their KTMT.

Published
2023

3. Rethinking Digital Technology versus Paper and Pencil in 3D Geometry

Author

Viseu, Floriano, Rocha, Helena, and Monteiro, José Manuel

Abstract

Recognising the relevance of learning Geometry, and in particular 3D Geometry, this study aims to discuss the contributions that digital technology and paper and pencil approaches can bring to students' learning. We seek, therefore, to identify the differences between the two approaches, and specifically: What factors are relevant in one and the other approach? What does one approach facilitate over the other? A quantitative and a qualitative and interpretive methodology was adopted, and based on a didactic intervention, the students' resolutions of the proposed tasks were analysed. The results obtained show that the experience and prior knowledge of the students with each of the solids involved seems to be decisive in the approach with paper and pencil. However, technology emerges as an enhancing resource when prior knowledge is more fragile. The study also shows differences between the representations supported by the two resources, suggesting the mobilisation of different knowledge by the students in relation to each of the resources.

Published
2022

4. Transversal Competencies for Employability: From Higher Education to the Labour Market

Author

Belchior-Rocha, Helena, Casquilho-Martins, Inês, and Simões, Eduardo

Abstract

Aligning learning goals with the needs of the labour market is a difficult task for universities, especially in the present day. Although organisations seek professionals with flexible and varied skills, universities often underestimate the importance of cross-curricular skills. Thus, this article aims to identify the perception of recent graduates as to the importance of the transversal skills that they acquired and developed at university and the ways in which they are now applied in the work environment. In this exploratory study, we sent a questionnaire to recent graduates that allowed us to analyse the development and applicability of these competencies in organisations. The results are further discussed within the broader framework of how universities adapt to the strong socio-economic challenges that characterise current times and the integration of recent graduates into the labour market.

Published
2022

22. Trichomonas Vaginalis

Author

ROCHA, MYLENA FRANCYELE QUEIROZ, primary, ROCHA, HELENA TAGLIAFERRO, additional, PAULA, NAIR ALBUQUERQUE GOMES DE, additional, ALBUQUERQUE, KARULYNA KAALY LOPES DE, additional, PAULA, HENRIQUE OLIVEIRA DE, additional, ALMEIDA, LUCAS FARIAS EPITÁCIO DE, additional, and MOREIRA, WESLLEY DA SILVA BARBOSA, additional

Published
2022
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23. Cartilha Prevenção de Acidentes em Pré-Escolar, Acima de 5 anos

Author

ROCHA, MYLENA FRANCYELE QUEIROZ, primary, ROCHA, HELENA TAGLIAFERRO, additional, PAULA, NAIR ALBUQUERQUE GOMES DE, additional, ALBUQUERQUE, KARULYNA KAALY LOPES DE, additional, ALMEIDA, LUCAS FARIAS EPITÁCIO DE, additional, PAULA, HENRIQUE OLIVEIRA DE, additional, and MOREIRA, WESLLEY DA SILVA BARBOSA, additional

Published
2022
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24. Unveiling the Ethical Dilemmas of Digital Piracy: A Comprehensive Exploration of Motivations, Attitudes, and Behaviors.

Author

Belchior-Rocha, Helena, Arslan, Aykut, and Yener, Serdar

Subjects
*INTERNET piracy, *ETHICAL decision making, *DIGITAL technology, *ETHICAL problems, *DAMAGES (Law)
Abstract

Driven by several elements, including the unwillingness to pay for material, the spread of subscription services, and the profitability of illegal activity, digital piracy has grown to be a common problem in the contemporary world. Along with financial damages for businesses and content creators, this phenomenon has legal repercussions for individuals involved in piracy and cybersecurity issues. The effective fight against digital piracy depends on an awareness of the drivers and hazards connected with this illegal activity. With an eye towards a thorough knowledge of this intricate problem, in this study, the focus centers on the reasons, attitudes, and actions behind digital piracy. Through examining how people defend their behavior in particular situations, in this study, the aim is to clarify the ethical issues and decision-making procedures related to piracy—even among otherwise law-abiding people. Combining a variety of the relevant literature and ideas, including situation ethics theory, in this study, we seek to provide insights for legislators, business players, and academics eager to meet the difficulties presented by digital piracy. This study adds to the continuous discussion on lessening the detrimental effects of digital piracy on content creators, businesses, and cybersecurity by looking at the underlying reasons for piracy and supporting legal access to material. Along with a dearth of research on the origins and moral questions of digital piracy, there is a lot of contradictory material. By examining the factors behind this unlawful activity, clarifying the complex dynamics involved, and offering understanding of the causes of digital piracy, this study seeks to close a significant void in the knowledge. The findings of this study will enable individuals to develop strategies for handling this prevalent issue in the digital era. Developing successful interventions that can reduce this illegal conduct and safeguard the interests of content producers, businesses, and cybersecurity overall depends on an awareness of the reasons behind digital piracy. This study advances the knowledge of the difficulties presented by this global phenomenon by investigating the ethical issues and decision-making procedures related to digital piracy. [ABSTRACT FROM AUTHOR]

Published
2024
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25. Prenatal stress induces sex- and tissue-specific alterations in insulin pathway of Wistar rats offspring.

Author

Mentzinger, Juliana, Teixeira, Gabriel Fernandes, Monnerat, Juliana Arruda de Souza, Velasco, Larissa Lírio, Lucchetti, Bianca Bittencourt, Martins, Matheus Azevedo Carvalho, Costa, Viviane, Andrade, Giovanna Palermo de, Magliano, D'Angelo Carlo, Rocha, Helena Naly Miguens, Nóbrega, Antonio Claudio Lucas da, Medeiros, Renata Frauches, and Rocha, Natália Galito

Subjects
HDL cholesterol, INSULIN receptors, INSULIN sensitivity, PROTEIN-tyrosine phosphatase, GLUCOSE intolerance
Abstract

Prenatal stress may lead to tissue- and sex-specific cardiometabolic disorders in the offspring through imbalances in the insulin signaling pathway. Therefore, we aimed to determine the sex-specific adaptations of prenatal stress on the insulin signaling pathway of cardiac and hepatic tissue of adult offspring Wistar rats. Wistar pregnant rats were divided into control and stress groups. Unpredictable stress protocol was performed from the 14th to the 21st day of pregnancy. After lactation, the dams were euthanized, and blood was collected for corticosterone measurement and the offspring were separated into four groups according to sex and intervention (n = 8/group). At 90 days old, the offspring were submitted to an oral glucose tolerance test (OGTT) and an insulin tolerance test (ITT). After euthanasia, blood collection was used for biochemical analysis and the left ventricle and liver were used for protein expression and histological analysis. Stress increased maternal corticosterone levels. It also increased glucose concentration in both OGTT and ITT and reduced insulin receptor (Irβ) and insulin receptor substrate-1 (IRS1) activation, while reducing the insulin receptor inhibition [protein tyrosine phosphatase 1B (PTP1B)] in the liver of male offspring at 90 days old, without repercussions in cardiac tissue. Moreover, female offspring submitted to prenatal stress exhibited reduced fatty acid uptake, with lower hepatic CD36 expression, reduced high-density lipoprotein cholesterol (cHDL), and increased Castelli risk indexes I and II. Unpredictable prenatal stress evoked reduced insulin sensitivity and liver-specific impairment in insulin signaling activation in male while increasing markers of cardiovascular risk in females. NEW & NOTEWORTHY: Prenatal stress may contribute to tissue-specific programming, especially in the liver. Our results showed that, although there were no repercussions to stress in cardiac tissue at 90 days old, prenatal stress induces a glucose intolerance phenotype with insulin signaling pathway alterations in the liver of male offspring at 90 days old. Furthermore, the prenatal stress altered lipid profile and increased cardiovascular risk in female offspring. [ABSTRACT FROM AUTHOR]

Published
2024
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26. Using Tasks to Develop Pre-Service Teachers' Knowledge for Teaching Mathematics with Digital Technology

Author

Rocha, Helena

Abstract

Teacher education is central to the development of the professional knowledge of pre-service teachers. The main goal of this paper is to reflect on the development that the analysis (done by a group of pre-service secondary teachers) of a set of tasks, based on elements related to domains of KTMT--"Knowledge for Teaching Mathematics with Technology"--can bring to the knowledge of pre-service teachers of mathematics. Specifically, the goal was to investigate the following questions: (1) What are the factors that guide the pre-service teachers' task discussion? (2) Which KTMT domains are emphasized by pre-service teachers during task discussion? The elements taken into account are the characteristics of the tasks (focus on cognitive level, structuring level and technology role), the use of representations (focus on balance and articulation of representations), and the equilibrium between experimentation (focus on digital technology affordances) and justification (focus on argumentation and proof). The methodology of this case study involves a qualitative approach. The main conclusions suggest that influences in the pre-service teachers' discussion of tasks fell into the following categories: the potentialities of technology, the type of tasks, and the prospective teachers' experience with a set of tasks, and analysis of some real students' reports. With regard to KTMT, although it was possible to identify some global development, "Teaching and Learning and Technology Knowledge" was the domain in which stronger development took place.

Published
2020
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27. Graphical Representation of Functions Using Technology: A Window to Teacher Knowledge

Author

Rocha, Helena

Abstract

Using technology to get a graphical representation of functions requires the choice of a suitable viewing window. The literature suggests teachers' knowledge as being central in this process, but does not tell us much about how the teachers should manage this. This study aims to improve understanding about the teachers' choices related to the viewing window on the study of functions. It also intends to illustrate how this analysis can be a useful way to access aspects of teachers' knowledge based on the framework of "Knowledge for Teaching Mathematics with Technology" (KTMT). The study adopts a qualitative methodological approach, undertaking case studies of two teachers. The findings recognize the importance of carefully sequencing the students' contact with this kind of situation and the impact of the viewing window over the teachers' choices of tasks, pointing to the relevance of considering situations where the students actually face the difficulties. This highlights the relation of teachers' choices of viewing window to their knowledge of different KTMT's domains, and specifically the relevance of knowledge of different ways to change the window; of the difficulties faced by the students; of the most suitable tasks (and required viewing window) at each moment; of the impact of the viewing window on the appearance of a graph and of the different situations associated, from the mathematical point of view.

Published
2020
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30. Functional and structural attributes of Brazilian tropical and subtropical forests and savannas

Author

Souza, Cléber Rodrigo de, primary, Coelho de Souza, Fernanda, additional, Françoso, Renata Dias, additional, Maia, Vinícius Andrade, additional, Pinto, José Roberto Rodrigues, additional, Higuchi, Pedro, additional, Silva, Ana Carolina, additional, Prado Júnior, Jamir Afonso do, additional, Farrapo, Camila Laís, additional, Lenza, Eddie, additional, Mews, Henrique, additional, Rocha, Helena L. Lemos, additional, Mota, S.ílvia L., additional, Rodrigues, Ana L.ívia de Carvalho, additional, Silva-Sene, André Maciel da, additional, Moura, Denise Madeira, additional, Araújo, Felipe de Carvalho, additional, Oliveira, Fernanda de, additional, Gianasi, Fernanda Moreira, additional, Silva, Lidiany Carolina Arantes da, additional, Ferreira, Leony Aparecido Silva, additional, Alves, L.ívia Laiane Barbosa, additional, Santos, Lucélia Rodrigues, additional, Reis, Miguel Gama, additional, Pereira, Rafaella Tavares, additional, Bila, S.érgio Alfredo, additional, Souza, Tatiane Almeida, additional, Meireles, Thiago Magalhães, additional, Fontes, Marco Aurélio Leite, additional, and Santos, Rubens Manoel dos, additional

Published
2024
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34. Bilateral Todd's paralysis in a patient with left fronto‐opercular epilepsy

Author

Oliveira, Daniela Santos, Rocha, Helena, Vieira, Duarte, Rito, Manuel, and Rego, Ricardo

Abstract

Postictal paresis (“Todd's paralysis”) is commonly observed as a unilateral, transient motor weakness, lasting minutes to hours, after focal or focal to bilateral tonic–clonic seizures, contralateral to the epileptogenic zone. Bilateral postictal paresis is exceedingly rare and could be misinterpreted, especially if the preceding convulsive phase was not witnessed. An 18‐year‐old right‐handed male patient with refractory focal epilepsy with seizure onset at age 3 years, was admitted for presurgical video‐EEG monitoring. His seizures were predominantly nocturnal, consisting of a laryngeal somatosensory aura, occasionally evolving to bilateral tonic or tonic–clonic seizures with occasional asymmetrical limb extension during the tonic phase (right arm extension). Postictally, consciousness recovery was fast, if ever lost. At that stage, we documented severe dysarthria and bilateral symmetrical arm paresis lasting several minutes. The ictal pattern and interictal epileptiform activity were projected on the fronto‐central midline. Brain MRI was highly suggestive of a bottom‐of‐sulcus dysplasia with underlying transmantle sign on the left premotor, fronto‐opercular region and an FDG‐PET‐CT showed a concordant left fronto‐operculo‐insular hypometabolism. A complete lesionectomy was performed, with the additional guidance of intraoperative electrocorticography, resulting in sustained seizure freedom. Anatomo‐pathology confirmed a type 2b focal cortical dysplasia. We speculate that, in our patient, a left fronto‐opercular ictal onset with an early spread to both primary motor cortices and relative sparing of consciousness networks allowed the emergence of a clinically detectable postictal bilateral paresis.

Published
2024
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37. Development and Manufacturing of a Fibre Reinforced Thermoplastic Composite Spar Produced by Oven Vacuum Bagging.

Author

Rocha, Helena, Rocha, Agnieszka, Malheiro, Joana, Sousa, Bruno, Vilela, Andreia, Carneiro, Filipa, and Antunes, Paulo

Subjects
*HEAT resistant materials, *FIBROUS composites, *THERMOSETTING composites, *THERMOPLASTIC composites, *MANUFACTURING processes
Abstract

The limited recyclability of fibre-reinforced thermoset composites has fostered the development of alternative thermoplastic-based composites and their manufacturing processes. The most common thermoplastic-based composites are often costly due to their availability in the form of prepreg materials and to the high pressure and temperatures required for their manufacturing. Yet, the manufacturing of economic and recyclable composites, made of semi-preg composite materials using traditional composite manufacturing technologies, has only been proved at a laboratory scale through the manufacturing of flat plates. This work reports the manufacturing of a real structural part, a wing spar section with complex geometry, made of commingled polyamide 12 (PA12) fibres and carbon fibres (CFs) semi-preg and by oven vacuum bagging (OVB). The composite layup was studied using finite element analysis, and processing simulation assisted in the determination of the PA12/CF preform for OVB. Processing of two forms of semi-preg materials was first evaluated and optimised. The material selection for part manufacturing was mainly defined by the materials' processability. The spar section was manufactured in two OVB stages and was then mechanically tested. The mechanical test showed a linear strain response of the prototype up to the maximum load and validated the optimised layup configuration of the composite structure. [ABSTRACT FROM AUTHOR]

Published
2024
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38. Natural Pigments Recovery from Food By-Products: Health Benefits towards the Food Industry.

Author

Magalhães, Daniela, Gonçalves, Ricardo, Rodrigues, Cristina V., Rocha, Helena R., Pintado, Manuela, and Coelho, Marta C.

Subjects
PALETTE (Color range), FOOD science, FOOD industry, CONSUMERS
Abstract

Given the health risks associated with synthetic colorants, natural pigments have emerged as a promising alternative. These renewable choices not only provide health benefits but also offer valuable technical and sensory properties to food systems. The effective application of natural colorants, however, requires the optimization of processing conditions, exploration of new sources, and development of novel formulations to ensure stability and maintain their inherent qualities. Several natural pigment sources have been explored to achieve the broad color range desired by consumers. The purpose of this review is to explore the current advances in the obtention and utilization of natural pigments derived from by-products, which possess health-enhancing properties and are extracted through environmentally friendly methods. Moreover, this review provides new insights into the extraction processes, applications, and bioactivities of different types of pigments. [ABSTRACT FROM AUTHOR]

Published
2024
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41. Processing and structural health monitoring of a composite overwrapped pressure vessel for hydrogen storage.

Author

Rocha, Helena, Antunes, Paulo, Lafont, Ugo, and Nunes, João P.

Subjects
CARBON fiber-reinforced plastics, STRUCTURAL health monitoring, STRAINS & stresses (Mechanics), FIBROUS composites, MANUFACTURING processes
Abstract

A process and Structural Health Monitoring system was implemented on a Composite Overwrapped Pressure Vessel (COPV) for hydrogen storage at 350 bar to be used in a fuel-cell system of an Unmanned Aerial Vehicle. This work reports the embedment strategy of optical fibre Bragg grating (FBG) sensors to monitor the full life cycle of the vessel, consisting of an aluminium liner and a wound carbon fibre reinforced polymer composite overwrap. A FBG sensing array, bonded on the aluminium liner circumferential section, was covered with a localised unidirectional prepreg composite tape, enabling composite winding and curing monitoring. The sensing array strategy allowed to detect and locate Barely Visible Impact Damage resulting from drop-weight impact tests, based on the ratio of the residual strain amplitude between FBG sensor pairs. Errors as small as 17 mm and up to 56 mm were determined between the predicted and 'real' impact locations. To simulate the real-life operational pressure charging and discharging cycles, the COPV was subjected to cycling testing at different pressure ranges. The FBG sensors were able to monitor a total of 20 980 pressure cycles, revealing a linear response to the applied pressure, and remained operational after COPV failure. Furthermore, the FBG sensing array was able to detect the residual plastic strain caused in the aluminium liner by the autofrettage process that the COPV was subjected to prior to pressure cycling, at 600 bar for 2 min, to improve its fatigue performance. This manuscript also reports the COPV structural design by Finite Element Modelling (FEM), its manufacturing process and burst pressure testing for the FEM analysis validation. A small difference of 0.7% was found between the simulated and experimental determined burst pressure of 1061 ± 26 bar. [ABSTRACT FROM AUTHOR]

Published
2024
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44. Epidemiologia e Políticas Públicas de Saúde

Author

Takeishi, Lucas Kenji, primary, Rios, Vladmir Machado, additional, Mattos, Atílio Franco De, additional, Almeida Junior, Benedito Silva De, additional, Lacerda, Luiz Muller Pimentel Delfim, additional, Lopes, Diego José Pereira, additional, Vieira, Rômulo Micael Lacerda, additional, Ramos, João Vitor Dias, additional, Cocate, Emilio Guedes, additional, Marçal, Fernanda Lima, additional, Carvalho, Lara Rhania Canedo, additional, Rodrigues, Fernanda Odete Souza, additional, Fernandes, Luciano Scher, additional, Campos, Kaique Augusto Marques de, additional, Mega, Luis Felipe Silveira, additional, Mega, Gabriela Silveira, additional, Rodrigues, Luiza Amarante, additional, Ribeiro, Giovanna Domingues, additional, Moura, Brenda Nayara Gontijo de, additional, Miranda, Giovanna Neves Cartagena, additional, Ribeiro, Juliana Costa, additional, Scarpelli, Catalina Gómez, additional, Almeida, Mariana Abdo de, additional, Santos, Letícia Christiane Huida dos, additional, Barbosa, Karina de Castro, additional, Medeiros, Ágata Raposo de, additional, Bessa, Camila Alves de, additional, França, Diulya Fontenele, additional, Sandes, Thayssa Souza, additional, AZEVEDO, DANYELLY RODRIGUES MACHADO, additional, Domingues, Ana Clara Oliveira, additional, Souto, Ana Carolina Xavier, additional, Soares, Camila Martins, additional, Vilela, Gerliane Ribeiro, additional, Postigo, Isabella Stéfanny de Freitas, additional, Fleury, Murillo Waldo Silva, additional, Resende, Diego Barbosa, additional, Melo, Amanda Gabriele Alves Cobiniano De, additional, Loureiro, Amanda Guimarães, additional, Rosa, Ana Carolina Pompeu, additional, Costa, Eunice De Oliveira, additional, Campos, Guilherme Aires Oliveira, additional, Marinho, Luann Bambach, additional, Melo, Maria Luíza Alves Cobiniano De, additional, Oliveira, Marta Regina Silva, additional, Moratto, Mayara De Andrade, additional, Silva, João Felipe Tinto, additional, Silva, Felipe Santana e, additional, Almeida, Andréa Gomes De, additional, Carvalho Neto, Cloves De Moraes, additional, Pinto, Deijane Colaço, additional, Sousa, Erick Romulo Bezerra De, additional, Carneiro, Guilherme Andrade, additional, Costa, Iracema Silva Da, additional, Costa, Jaqueline Brito Da, additional, Barboza, Laine Da Costa Almeida, additional, Silva, Washington Vittor Da Conceição, additional, Silva, Híllary Ruth Rodrigues Da, additional, Almeida, Antonia Mylene Sousa, additional, Brito, Shirley De Vasconcelos Bonfim, additional, Gonçalves Neto, Luiz Gerson, additional, Sousa, Laís Mesquita de, additional, Salvador, João Victor, additional, Souza, Giovana Perez de, additional, Costa, Mariana de Oliveira, additional, Lugarini, Giuliana, additional, Moreira, Ana Flávia, additional, Lugarini, Paola, additional, Fernandes, Thiago Barbosa, additional, Lembrance, Lara Macedo, additional, Souza, Maria Carolina Sticanele de, additional, Queiroz, Mariana Rodrigues De, additional, Vieira, Nelmara Alvarenga, additional, Paiva, Viviane Nogueira de, additional, Pinto, Davi Soares, additional, Sarmento, Phelipe Von Der Heide, additional, Souza, Fernanda Gabry Scazuza Gomes de, additional, Santana, Davi Silva, additional, Costa, Vanessa Ladyanne Da Silva, additional, Oliveira, Letícia Gomes de, additional, Piedade, Anna Beatriz De Souza, additional, Silva, Yngrid Monteiro Da, additional, Barros, Williany Álvares Da Silva, additional, Nunes, Pedro Paulo Santos, additional, Miranda, Yasmin Marçal Soares, additional, Puga, Giovana Rodrigues, additional, Santos, Leidiane De Jesus Da Costa, additional, Moraes, Maria Eduarda De Araújo, additional, Silva, Jayany Shirlley Pereira Da, additional, Nascimento, Valéria Gabriele Caldas, additional, Moraes, Camila Dos Santos, additional, Amaral, Ingrid Inez Dos Santos, additional, Lima, Manoel Cícero Viana de, additional, Silva, Ysabele Yngrydh Valente, additional, Albano, Maria Clara de Freitas, additional, Oliveira, Madeline Medeiros, additional, Araújo, Francisco Vittor Miranda e, additional, Santos, Ana Beatriz Sousa, additional, Matos filho, Jesamar correia, additional, Lopes, Sofia Pereira, additional, Vasconcelos, Samuel Carvalho, additional, Nascimento, Gabriel Romão Mesquita do, additional, Guerra, Ruddy Mariano Maia Cysne, additional, Paula Neto, João Ferreira de, additional, Matos, Pedro Schmitt Martins Paiva, additional, Lima, Amanda Almeida, additional, Albuquerque, Kilvia Maria, additional, Dambrós, Caroline, additional, Rovadoscki, Caroline Possamai, additional, Hermes, Cristian Gabriel, additional, Nunes, Ianne Layla Santos, additional, Silveira, Renata Marim da, additional, Nunes, João M P F, additional, Rubens, Daniel, additional, Silva, Wallace Girão da, additional, Souza, Monique Marques de, additional, Nunes, Catarina de J, additional, Passos, Iriel Ferreira, additional, Oliveira, Laís Ramos de, additional, Salles, Davi, additional, Pimenta, Zeila Cristina Pereira, additional, Guimarães, Milena Silva, additional, Santos, Silvia Evangelista, additional, Santos, Jéssica Lara Cipriano, additional, Costa, Mariana Tenório, additional, Santos, Giovanna Mendonça dos, additional, Almeida, Ataianny Karine Siqueira, additional, Lima, Pedro Emanuel Ramos de, additional, Sobrinho, Weberton Dorásio, additional, Santos, Yasmim Vieira dos, additional, Costa, Thaina Safira Souza da, additional, Batista, Woodyson Welson Barros da Silva, additional, Lopes, Dayana Moraes, additional, Neves, Victória Gonçalves, additional, Sousa, Maria Helena de Lima, additional, Carvalho, Maria Alice Araújo de França, additional, Leite, Airton César, additional, Santos, Ana Victória da Silva, additional, Moraes, Lucas Eduardo Galvão Alves, additional, Moreira, Geovana Ferreira, additional, Ferreira, Ilton Wellington de Sousa, additional, Cabral, Ana Estéfanny Alves, additional, Silva, Aparecida Marisa da, additional, Silva, Draenne Micarla dos Santos, additional, Medeiros, Felipe Lima de, additional, Oliveira, Mateus Medeiros de, additional, Silva, Myria Juscilania Maraço, additional, Silva, Myriam Juscilania Maraço, additional, Barros, Natallia de Oliveira, additional, Ovelar, Sheila Renata Roa, additional, Silva, Vanessa Amancio da, additional, Fagundes, Amanda Martins, additional, Silva, Caroline Eler, additional, Martins, Vicente Guimarães Fernandes Barcelos, additional, Costa, Daniela Camargos, additional, Fronza, Murilo Elias, additional, Sanfelice, Andriele, additional, Santo, Gabriel Fogaça Espírito, additional, Rosa, Samara Quoos Da, additional, Acauan, Ana Clara Godinho, additional, Sirtoli, Juliana Gregol, additional, Nunes, Clara Diniz Machado, additional, Biase, Bruna Santana Regattieri de, additional, Libânio, Eduarda de Soares, additional, Ribeiro, Júlia Holer Naves, additional, Bastos, Gabriela Cunha Fialho Cantarelli, additional, Machado, Rachel Daher Vieira, additional, Souza, Guilherme Briczinski de, additional, Vieira, Carlos Daniel, additional, Mendes, David de Souza, additional, Vieira, Eduardo Sander, additional, Pacheco, Geovana, additional, Pozzobon, Marina Gonçalves, additional, Bauer, Nathália Vescia, additional, Morais, Amanda Caroline da Silva, additional, OLIVEIRA JÚNIOR, MARCOS DIVINO DE, additional, Silva, Débora Borges de Oliveira, additional, Ferreira, Suiane Costa, additional, Santana, Angela Gabriela da Silva, additional, Mascarenhas, Bruna Barreto, additional, Gomes, Lorrana Corina, additional, Soares, Michael da Paixão, additional, Miranda, Laís Martins da Costa, additional, Sansoni, Beatriz Souza, additional, Barbosa, Camilla Melo, additional, Lott, Layla Pasolini, additional, Zschaber, Mariana Mesquita, additional, Magalhães, Paula Rodrigues de, additional, Pujatti, Priscilla Brunelli, additional, Paiva, Ayslan Rodrigues de, additional, Menezes, Isabelle Teixeira, additional, Cunha, Geziany Vieira dos Santos, additional, Castro, Isabella Cristina Santos de, additional, Marra, Lara Júlia Veríssimo, additional, Sousa, Lorena Pereira de, additional, Prado, Luiz Gustavo da Silva, additional, Apolinário, Pollyanna de Cárita, additional, Leite, Soraya de Souza Marques, additional, Graciano, Wanessa Fleury Silva, additional, Zanetti, Bernardo Valle, additional, Miranda, Carolina Silva, additional, Nakakura, Clarissa, additional, Sales, Diúle Nunes, additional, Lopes, Giovanna Resende de Oliveira, additional, Gonçalves, Jade Luiza Ferreira, additional, Oliveira, Josequeli Maria Goulart, additional, Felipe, Kaio Alves, additional, Ferreira, Karine Borges, additional, Ribeiro, Lívia Nóbrega, additional, Faria, Liz Ribeiro, additional, Almeida, Maria Luisa Oliveira, additional, Dutra, Milla Giancristofaro, additional, Ribeiro, Rafaela Pereira, additional, Martins, Luiza Oliveira, additional, Vieira, Jhennifer Stephanye Venturato, additional, Teles, Marina Pacheco, additional, Paula, Thayna Kathleen Pereira Martins de, additional, Silva, Priscilla Cardoso da, additional, Possamai, Vanessa Dias, additional, Borges, Lúcia Faria, additional, Gonçalves, Andréa Kruger, additional, Magalhaes, Ana Luiza Bastos, additional, Horbylon, Ana Júlia Queiroz Isaac, additional, Saad, Fernanda Gabriel Aires, additional, Kramer Neto, Arthur, additional, Seroiska, Gabriel, additional, Tietz, Pedro Henrique Torres, additional, Rocha, Helena Guedes da, additional, Martins, Grasiele do Amaral, additional, Herzog, Carolina Guimarães, additional, Silva, Caroline Engster da, additional, Fretes, Matheus Ribeiro, additional, Bettoni, Laís, additional, Naibo, Rafaella Aléssio, additional, Moreira, Adriano Louro, additional, Cruz, Rafaela da Silva, additional, Casanova, Estefany Karenine Rodriguez, additional, Viana, Guilherme Rodrigues, additional, Ruggini, Egídio Júnior Lorenzetti, additional, Jardim, Georgia Marques, additional, Teixeira, Marina de Araújo, additional, Pinheiro, Bianca de Carvalho, additional, Machado, Bruna Carreira, additional, Penhalber, Eduarda, additional, Ferrari, Fernanda Silva, additional, Baptista, Giovanna Rossini Pires, additional, Trigo, Lara 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Published
2021
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50. Hyperaemia during dynamic handgrip exercise is preserved in healthy young subjects after recovery from COVID‐19.

Author

Prodel, Eliza, Souza, Roberto, Divino, Beatriz, Rocha, Helena N. M., Rocha, Natalia G., and Nobrega, Antonio C. L.

Abstract

We sought to investigate possible impaired hyperaemia during dynamic handgrip exercise (HGE) in young healthy individuals who had recovered from COVID‐19. We tested the vascular function in individuals recovered from COVID‐19 using a nitric oxide donor (i.e., sodium nitroprusside; SNP), which could revert a possible impaired endothelial function during HGE. Further, we tested whether individuals who recovered from COVID‐19 would present exaggerated brachial vascular resistance under an adrenergic agonist (i.e., phenylephrine; PHE) stimuli during HGE. Participants were distributed into two groups: healthy controls (Control; men: n = 6, 30 ± 3 years, 26 ± 1 kg/m2; and women: n = 5, 25 ± 1 years, 25 ± 1 kg/m2) and subjects recovered from COVID‐19 (post‐COVID; men: n = 6, 29 ± 3 years, 25 ± 1 kg/m2; and women: n = 10, 32 ± 4 years, 22 ± 1 kg/m2). Participants in the post‐COVID group tested positive (RT‐PCR) 12–14 weeks before the protocol. Heart rate (HR), brachial blood pressure (BP), brachial blood flow (BBF) and vascular conductance (BVC) at rest were not different between groups. The HGE increased HR (Control: Δ9 ± 0.4 bpm; and post‐COVID: Δ11 ± 0.4 bpm) and BP (Control: Δ6 ± 1 mmHg; and post‐COVID: Δ12 ± 0.6 mmHg) in both groups. Likewise, BBF (Control: Δ632 ± 38 ml/min; and post‐COVID: Δ620 ± 27 ml/min) and BVC (Control: Δ6.6 ± 0.4 ml/min/mmHg; and post‐COVID: Δ6.1 ± 0.3 ml/min/mmHg) increased during HGE. SNP did not change HGE‐induced hyperaemia but did decrease BP, which induced a reflex‐related increase in HR. PHE infusion also did not change the HGE‐induced hyperaemia but raised BP and reduced HR. In conclusion, exercise‐induced hyperaemia is preserved in healthy young subjects 12–14 weeks after recovery from COVID‐19 infection. What is the central question of this study?How does vascular function compare during dynamic handgrip exercise in young healthy adult males and females who recovered from COVID‐19?What is the main finding and its importance?No differences were observed in exercise hyperaemia in healthy young adults, males and females, who recovered from COVID‐19 compared to the healthy control group. Vascular function seems to be preserved in individuals 12–14 weeks after COVID‐19 during dynamic handgrip exercise in young healthy adults, males and females. [ABSTRACT FROM AUTHOR]

Published
2024
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