João Vitor Martins Bernal

Ms. João Vitor Martins Bernal

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Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2025 in Brazilian Journal of Medical and Biological Research
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Journal Article
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JBJoão Vitor Martins Bernal
João Vitor Martins Bernal
JDJuan Carlos Sánchez Delgado
Juan Carlos Sánchez Delgado
AJA.M. Jácome-Hortúa
A.M. Jácome-Hortúa
AVA.C. Veiga
A.C. Veiga
GAG.V. Andrade
G.V. Andrade
HSHugo Celso Dutra Souza
Hugo Celso Dutra Souza
During the climacteric period, the decline in ovarian hormones leads to changes in the lipid profile. Physical exercise is the main non-pharmacological recommendation for controlling lipid levels. However, the effects on the lipid profile in perimenopausal and postmenopausal women are incipient and inconclusive. In this context, we searched the Embase, PubMed, Scopus, and Web of Science databases for randomized clinical trials on the effects of exercise on the lipid profile of these women. We excluded studies that did not specify criteria for classifying the climacteric phase, that involved women undergoing hormone replacement therapy, or that examined combined treatments or acute effects of physical exercise. The meta-analysis indicated that general physical exercise increased high-density lipoprotein cholesterol (HDL-C) levels (mean difference [MD]=4.89; 95% confidence interval [95%CI]=0.97 to 8.81) in perimenopausal women. For obese postmenopausal women, 16 weeks of aerobic training increased HDL-C levels (MD=3.88; 95%CI=0.56 to 7.20) and reduced total cholesterol (MD=-22.36; 95%CI=-29.67 to -15.05) and low-density lipoprotein cholesterol (LDL-C) levels (MD=-17.86; 95%CI=-25.97 to -9.75), whereas 12 weeks of resistance training increased HDL-C levels (MD=4.20; 95%CI=1.16 to 7.23) and decreased triglycerides (MD=-14.86; 95%CI=-26.62 to -3.09) and LDL-C levels (MD=-16.36; 95%CI=-28.05 to -4.67). Overall, the results showed that physical exercise regulated lipid profiles in perimenopausal and postmenopausal women. Specifically, 12 weeks of resistance exercise and 16 weeks of aerobic exercise improved the lipid profile of obese postmenopausal women.

11 November 2024 in Clinical Endocrinology
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JBJoão Vitor Martins Bernal
João Vitor Martins Bernal
AVAna Catarine da Veiga
Ana Catarine da Veiga
SPStella Vieira Philbois
Stella Vieira Philbois
VRVictor Barbosa Ribeiro
Victor Barbosa Ribeiro
BABruno Augusto Aguilar
Bruno Augusto Aguilar
HSHugo Celso Dutra Souza
Hugo Celso Dutra Souza

25 September 2025 in Clinical Endocrinology
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Journal Article
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JBJoão Vitor Martins Bernal
João Vitor Martins Bernal
JDJuan Carlos Sánchez Delgado
Juan Carlos Sánchez Delgado
NCNoemi Marchini de Souza Couto
Noemi Marchini de Souza Couto
AJAdriana Marcela Jácome‐Hortúa
Adriana Marcela Jácome‐Hortúa
VRVictor Barbosa Ribeiro
Victor Barbosa Ribeiro
HSHugo Celso Dutra Souza
Hugo Celso Dutra Souza

1 January 2023 in Estudos Interdisciplinares sobre o Envelhecimento
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JBJoão Vitor Martins Bernal
João Vitor Martins Bernal
ASAdriana Valadares da Silva
Adriana Valadares da Silva
MBMariana Colombini Buranello
Mariana Colombini Buranello
Introdução: linfedema periférico é definido como uma incapacidade do sistema linfático em manter a homeostase tecidual, gerando um acúmulo de fluido rico em proteínas. Essa condição altera a imagem corporal e impacta diretamente a função física do indivíduo pois reduz a força do segmento, restringe a amplitude de movimento e predispõe a infecções cutâneas. Objetivos: avaliar a qualidade de vida relacionada à saúde (QVRS) e a dor de indivíduos com linfedema periférico de membro superior. Metodologia: estudo transversal descritivo em que foram utilizados para avaliação da QVRS e dor, respectivamente, o questionário SF-36 e a Escala Visual Analógica de Dor (EVA). A amostra foi composta por conveniência, sendo os participantes atendidos em uma Clínica Escola de Fisioterapia no interior do estado de São Paulo. Os dados foram analisados por meio de estatística descritiva, com média e desvio padrão para variáveis contínuas e porcentagem para variáveis categóricas. Resultados: a amostra apresentou unanimidade feminina, com idade média correspondente a 60,7 anos. A avaliação da QVRS demonstrou que os domínios "aspectos emocionais", "dor" e "estado geral de saúde" apresentaram os piores escores. Além disso, a pontuação média na EVA foi de 3,5 pontos. Conclusões: O linfedema de membros superiores causa dor e tem importantes impactos na qualidade de vida dos indivíduos com essa condição.

Verified
Journal Article
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NCNoemi Marchini de Souza Couto
Noemi Marchini de Souza Couto
JBJoão Vitor Martins Bernal
João Vitor Martins Bernal
TFTábata de Paula Facioli
Tábata de Paula Facioli
DSDaniel dos Santos
Daniel dos Santos
HSHugo Celso Dutra Souza
Hugo Celso Dutra Souza
Background: COVID-19 has been associated with persistent impairments in autonomic modulation of heart rate variability (HRV). However, whether disease severity during the acute phase influences the magnitude of these impairments remains insufficiently explored. In turn, aerobic physical training (APT) has been proposed as a countermeasure to autonomic dysfunction of HRV in different conditions, although its effects in individuals with COVID-19 are not yet well established. To address these gaps, this study investigated the consequences of COVID-19 on autonomic modulation of HRV according to disease severity and evaluated the effects of APT on this parameter. Methods: One hundred and sixteen individuals (58 men and 58 women) aged between 30 and 55 years were included, allocated into three groups according to the severity of the disease in the acute phase: Mild group (n = 38, mean age: 48 ± 7 years); Moderate group (n = 52, mean age: 43 ± 5 years); and Severe group (n = 26, mean age: 45 ± 6 years). All groups had anthropometric and hemodynamic parameters evaluated before and after the 16-week APT period, as well as parameters of autonomic modulation of HRV analyzed using linear (time and frequency domain) and non-linear (symbolic analysis) methods obtained from R–R interval (RRi) recordings in the supine position for 30 min. Results: Initially, all groups presented similar anthropometric and hemodynamic values. In contrast, the Moderate and Severe groups presented lower values for standard deviation of normal RRi (SDNN; Moderate: 38 ± 14 ms; Severe: 33 ± 12 ms vs. Mild: 55 ± 28 ms; p < 0.001), root mean square difference between adjacent normal RRi (RMSSD; Moderate: 28 ± 13 ms; Severe: 22 ± 7 ms vs. Mild: 47 ± 38 ms; p < 0.001), total variance (Moderate: 203 ± 127 ms2; Severe: 303 ± 157 ms2 vs. Mild: 526 ± 347 ms2; p < 0.001), and high-frequency (HF) oscillations in absolute units (Moderate: 259 ± 270 ms2; Severe: 153 ± 74 ms2 vs. Mild: 438 ± 421 ms2; p < 0.001), both compared to the Mild group. In turn, the Severe group, when compared to the other groups, also presented lower HF oscillations (Severe: 29 ± 12 nu vs. Mild: 44 ± 17 nu and Moderate: 42 ± 17 nu; p < 0.001) and higher low-frequency (LF) oscillations (Severe: 71 ± 12 nu vs. Mild: 60 ± 17 nu and Moderate: 58 ± 17 nu; p < 0.001), but in normalized units. After the 16-week APT, all groups showed increases in HF oscillations (Mild: −206 ms2 and −19.12 nu; Moderate: −236 ms2 and −26.7 nu; Severe: −211 ms2 and −31.0 nu; p < 0.001) and reductions in LF oscillations (Mild: 198 ms2 and 19.01 nu; Moderate: 98 ms2 and 26.7 nu; Severe: 218 ms2 and 31.1 nu; p < 0.001), both in absolute and normalized units. In this case, there were no further differences in LF and HF oscillations between the groups. Conclusions: Individuals who had COVID-19 and developed moderate to severe cases showed greater impairments in the autonomic modulation of HRV, characterized by increased sympathetic autonomic modulation and reduced vagal modulation. In turn, APT as a countermeasure appears to increase vagal autonomic modulation and reduce sympathetic autonomic modulation of HRV, regardless of the previous severity of COVID-19.

13 September 2023 in Revista de Saúde Coletiva da UEFS
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Journal Article
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JBJoão Vitor Martins Bernal
João Vitor Martins Bernal
RSRafael Francklin da Silva
Rafael Francklin da Silva
ASAdriana Valadares da Silva
Adriana Valadares da Silva
MBMariana Colombini Buranello
Mariana Colombini Buranello
Introdução: O linfedema periférico é uma condição crônica e incurável que causa inchaço, inflamação e pode levar a infecções, prejudicando a qualidade de vida e a funcionalidade do indivíduo. Objetivo: Investigar a relação entre funcionalidade e qualidade de vida em mulheres com linfedema periférico, tanto de membros superiores quanto de membros inferiores. Métodos: Trata-se de um estudo observacional do tipo transversal realizado em mulheres com linfedema periférico. Foram utilizados os questionários SF-36, DASH, Lymph-ICF-LL e a Escala Visual Analógica de Dor. Os dados foram coletados, tabulados em uma planilha do Excel e, posteriormente, analisados estatisticamente. Resultados: A amostra do estudo apresentou idade média de 59,2 anos e predominância de linfedema em membros inferiores. Em relação à comparação entre o grupo de pacientes com linfedema em membros superiores e o grupo de pacientes com linfedema em membros inferiores, foi observada diferença significativa nas variáveis peso e IMC. Além disso, em pacientes com linfedema periférico de membros inferiores, foi constatado uma correlação moderada negativa entre funcionalidade e qualidade de vida. Conclusão: Infere-se que, em pacientes com linfedema de membros inferiores, à medida que o linfedema aumenta seu impacto na funcionalidade, a qualidade de vida diminui.