Pedro Hallal

Pedro Hallal
Universidade Federal de Pelotas | UFPEL · Center for Epidemiological Research

PhD in Epidemiology

About

562
Publications
157,787
Reads
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32,527
Citations
Introduction
Skills and Expertise
Education
March 2003 - July 2005
Universidade Federal de Pelotas
Field of study
  • Epidemiology

Publications

Publications (562)
Article
Full-text available
Background Physical activity (PA) declines during childhood. Important sources of PA are active travel, organised sport and physical education (PE), but it is unclear how these domain-specific PA sources contribute to (changes in) daily moderate-to-vigorous PA (MVPA) in young people. This study aimed to examine (1) the cross-sectional association b...
Article
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Objective The COVID-19 pandemic has caused major stress for families and children, particularly in the context of prolonged school closures. Few longitudinal studies are available on young children’s mental health, including data both before and during the pandemic. This study examined experiences that might increase risk for mental health problems...
Article
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Background: This article presents the recommendations from the Physical Activity Guidelines for the Brazilian Population. Methods: A steering committee composed of a chair, 6 experts in physical activity, and representatives from the Ministry of Health/Brazil, Pan American Health Organization, Brazilian Society of Physical Activity and Health desig...
Article
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Background: This article describes the process and methods used in the development of the first ever Physical Activity Guidelines for the Brazilian Population. Methods: The steering committee established 8 working groups based on other guidelines and the Brazilian agenda for public health and physical activity (PA) promotion: (1) understanding PA;...
Article
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Objective: The present study aims to verify the association between objectively measured physical activity (PA) of parents and child in the 2015 Pelotas Birth Cohort, a population-based Brazilian birth cohort. Methods: The main exposures were paternal moderate-to-vigorous PA (MVPA) collected when children were 1-year of age, and maternal MVPA wh...
Article
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The NEPHROS is a randomized controlled trial which applied a 16-week aerobic and resistance training to patients with chronic kidney disease (CKD) and high blood pressure. This report describes a long-term post-trial follow-up, comparing survival, health-related quality of life (HRQoL), and estimated glomerular filtration rate (GFR) change between...
Article
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We aimed to assess the proportion of the population in 133 Brazilian municipalities who - from March to August 2020 - had a health problem but failed to seek care or failed to attend to a health service for routine appointment or examination. We conducted a household survey from August 24-27 in 133 Brazilian cities by asking the subjects if, since...
Article
Full-text available
Background: This article presents the recommendations from the Physical Activity Guidelines for the Brazilian Population. Methods: A steering committee composed of a chair, 6 experts in physical activity, and representatives from the Ministry of Health/Brazil, Pan American Health Organization, Brazilian Society of Physical Activity and Health de...
Article
Full-text available
Background: This article describes the process and methods used in the development of the first ever Physical Activity Guidelines for the Brazilian Population. Methods: The steering committee established 8 working groups based on other guidelines and the Brazilian agenda for public health and physical activity (PA) promotion: (1) understanding P...
Article
Full-text available
Background Understanding which strategies have been recommended for the promotion of active and healthy lifestyles through physical education (PE) classes can guide PE policies and practice. Therefore, we summarized worldwide recommendations regarding strategies for PE classes that have aimed to promote active and healthy lifestyles among school-ag...
Article
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Introduction: The United Kingdom and World Health Organization recently changed their youth physical activity (PA) guidelines from 60 minutes of moderate-vigorous PA (MVPA) every day, to an average of 60 minutes of MVPA per day, over a week. The changes are based on expert opinion due to insufficient evidence comparing health outcomes associated w...
Article
Background: The aim of this study was to investigate longitudinal associations between physical activity and early childhood neurodevelopment. Methods: Data from 1673 children from the 2015 Pelotas (Brazil) birth cohort study were analyzed. Physical activity was measured using accelerometers on the wrist at ages 1, 2, and 4 years. Neurodevelopme...
Article
Background: The aim of this study was to investigate the effect of exercise during pregnancy on early childhood neurodevelopment (cognitive, motor, and language domains). Methods: A randomized controlled trial nested into the 2015 Pelotas (Brazil) Birth Cohort was conducted. Healthy pregnant women were enrolled between 16 and 20 weeks of gestati...
Article
Background: This study aims to investigate inequalities in leisure-time physical activity (PA) practice amid the COVID-19 pandemic in a southern Brazilian city. Methods: Four repeated population-based surveys were carried out. PA was collected using a questionnaire proposed by the authors and an adapted version of the leisure-time section of the...
Article
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Objective: To evaluate the prevalence of reports of symptoms of COVID-19 among individuals with and without antibodies and identify those with greater capability to predict the presence of antibodies against SARS-CoV-2. Methods: The study uses data collected in phases 5 to 8 of Epicovid-19-RS. The presence of antibodies against SARS-CoV-2 was ev...
Article
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Objective: To describe the evolution of seropositivity in the State of Rio Grande do Sul, Brazil, through 10 consecutive surveys conducted between April 2020 and April 2021. Methods: Nine cities covering all regions of the State were studied, 500 households in each city. One resident in each household was randomly selected for testing. In survey...
Article
Objetivos. Investigar las desigualdades socioeconómicas y entre distintos grupos étnicos en la prevalencia de anticuerpos contra el SARS-CoV-2 en las 27 unidades federativas de Brasil. Métodos. En este estudio transversal, se realizaron tres encuestas de hogares los días 14-21 de mayo, 4-7 de junio y 21-24 de junio de 2020 en 133 áreas urbanas bras...
Article
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In 2020, the Brazilian Health Ministry in partnership with the Federal University of Pelotas, Rio Grande do Sul selected researchers for the elaboration of the Brazilian Physical Activity Guide. The objective of this article was to present the methods used as well as the results of the Brazilian Physical Activity Guide for adults from 18 to 59 year...
Article
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Resumo Imunizações de rotina durante pandemias podem ser prejudicadas. Este estudo estimou a cobertura vacinal para influenza em idosos durante a COVID-19 através do EPICOVID-19, inquérito populacional realizado em 133 cidades sentinelas dos 26 estados brasileiros e Distrito Federal. Selecionou-se 25 setores censitários por cidade, amostragem propo...
Article
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RESUMO Por iniciativa do Ministério da Saúde, em colaboração com pesquisadores nacionais, elaborou-se o primeiro Guia de Atividade Física (AF) para a População Brasileira, incluindo recomendações para as várias fases da vida e populações especiais. O objetivo deste estudo é apresentar o processo metodológico e os resultados do capítulo de recomenda...
Article
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RESUMO As aulas de educação física (EF) escolar representam um momento propício para conhecer e vivenciar a pluralidade do movimento humano, favorecendo a promoção de uma vida ativa e saudável. A importância da EF escolar foi reconhecida pelo Guia de Atividade Física para a População Brasileira (Guia), que dedicou um capítulo para orientar a comuni...
Article
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Regular physical activity promotes physiological, psychological and social benefits in the lives of children and adolescents. Despite the high prevalence of young people who do not physically activity in our country, and that we have a good ranking in world academic production on research in the physical activity and health area, Brazilian recommen...
Article
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Este artigo tem por objetivo apresentar as recomendações de atividade física para gestantes e mu-lheres no pós-parto desenvolvidas para o Guia de Atividade Física para a População Brasileira. Para isso, utilizou-se uma abordagem de métodos mistos que incluiu quatro etapas: 1) levantamento das diretrizes internacionais mais recentes; 2) revisão narr...
Article
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Visando orientar a população dos benefícios da prática de atividade física à saúde, pesquisadores nacionais, em parceria com o Ministério da Saúde, elaboraram o Guia de Atividade Física para a População Brasileira (Guia). O objetivo deste estudo foi apresentar o processo de elaboração das recomendações brasileiras de atividade física para pessoas c...
Book
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O Guia de Atividade Física para a População Brasileira foi elaborado pelo Ministério da Saúde, com recomendações e informações para estimular a população a adotar uma vida fisicamente ativa. O Guia é um documento estruturado que considera as particularidades e a diversidade da população brasileira, abrangendo diferentes ciclos da vida e populações...
Article
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Objective: Describing the prevalence of chronic diseases and associated socioeconomic and demographic factors, evaluating the patterns of social distancing and the antibodies prevalence against SARS-CoV-2 and COVID-19 symptoms in carriers and non-carriers of chronic diseases. Methods: Data from 77,075 individuals aged 20 to 59 from three steps o...
Article
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Purpose The Structured Days Hypothesis (SDH) posits that children’s behaviors associated with obesity – such as physical activity – are more favorable on days that contain more ‘structure’ (i.e., a pre-planned, segmented, and adult-supervised environment) such as school weekdays, compared to days with less structure, such as weekend days. The purpo...
Preprint
Avaliou-se a cobertura vacinal para influenza em idosos na pandemia COVID-19 através do EPICOVID-19, inquérito de base populacional realizado em 133 cidades sentinela dos 26 estados brasileiros e Distrito Federal. Selecionou-se 25 setores censitários por cidade com amostragem proporcional ao tamanho, 10 domicílios por setor e uma pessoa por domicíl...
Article
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There is solid evidence for an association between physical activity and metabolic health outcomes in children and youth, but for methodological reasons most studies describe the intensity spectrum using only a few summary measures. We aimed to determine the multivariate physical activity intensity signature associated with metabolic health in a la...
Article
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This study aimed to describe leisure time physical activity (LPA) during the COVID-19 pandemic in a municipality of Rio Grande do Sul state, southern Brazil, according to gender, level of education, and adherence to social distancing. A population-based and cross-sectional descriptive study was carried out in Bagé (RS), Brazil. LPA during the pande...
Article
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Low and high birth weight is associated with higher levels of cardiometabolic risk factors and adiposity in children and adolescents, and increases the risk of cardiovascular diseases, obesity, and early mortality later in life. Moderate-to-vigorous physical activity (MVPA) is associated with lower cardiometabolic risk factors and may mitigate the...
Article
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Background: Prolonged sitting time is a risk factor for chronic disease, yet recent global surveillance is not well described. The aims were to clarify: (i) the countries that have collected country-level data on self-reported sitting time; (ii) the single-item tools used to collect these data; and (iii) the duration of sitting time reported acros...
Preprint
Full-text available
Background: Prolonged sitting time is a risk factor for chronic disease, yet recent global surveillance is not well described. The aims were to clarify: (i) the countries that have collected country-level data on self-reported sitting time; (ii) the single-item tools used to collect these data; and (iii) the duration of sitting time reported across...
Preprint
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Since the beginning of the pandemic of COVID-19, there has been a widespread assumption that most infected persons are asymptomatic. A frequently-cited early study from China suggested that 86% of all infections were undocumented, which was used as indirect evidence that patients were asymptomatic. Using data from the most recent wave of the EPICOV...
Article
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Population-based data on COVID-19 are urgently needed. We report on three rounds of probability sample household surveys in the state of Rio Grande do Sul (Brazil), carried out in nine large municipalities using the Wondfo lateral flow point-of-care test for immunoglobulin M and G antibodies against SARS-CoV-2 (https://en.wondfo.com.cn/product/wond...
Preprint
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Background: While the recommended laboratory diagnosis of COVID-19 is a molecular based assay, population-based studies to determine the prevalence of COVID-19 usually use serological assays. Objective: To evaluate the sensitivity and specificity of a rapid diagnostic test for COVID-19 compared to quantitative reverse transcription polymerase chain...
Article
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Background: Levels of physical activity and variation in physical activity and sedentary time by place and person in European children and adolescents are largely unknown. The objective of the study was to assess the variations in objectively measured physical activity and sedentary time in children and adolescents across Europe. Methods: Six da...
Article
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Physical inactivity is a global pandemic with no signs of improvement. Prolonged sitting time is an emerging risk factor that exacerbates the health consequences of physical inactivity. Both behaviours are influenced by various individual and environmental factors but it remains unknown whether early-life exposures “program” these behaviours in lat...
Article
This study evaluated the test–retest reliability of a questionnaire assessing five domains of sedentary behaviour, and compared an overall indicator of sitting time with measures obtained by a multi-domain questionnaire, among adults living in Brazil. Data from two different studies carried out in Pelotas, Brazil, were used. Study A: evaluated 7-da...
Article
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Background: Evidence on the association between sitting for extended periods (i.e. prolonged sedentary time (PST)) and cardio-metabolic health is inconsistent in children. We aimed to estimate the differences in cardio-metabolic health associated with substituting PST with non-prolonged sedentary time (non-PST), light (LIPA) or moderate-to-vigorou...
Poster
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The SBC-GoPA! Sedentary Behaviour Council Global Monitoring Initiative is collating global data on sedentary behaviour prevalence, surveillance, research and policy activity.
Article
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Background Infant-mortality rates have been declining in many low- and middle-income countries, including Brazil. Information on causes of death and on socio-economic inequalities is scarce. Methods Four birth cohorts were carried out in the city of Pelotas in 1982, 1993, 2004 and 2015, each including all hospital births in the calendar year. Surve...
Article
Background Antenatal care and correctly indicated caesarean section can positively impact on health outcomes of the mother and newborn. Our objective was to describe how coverage and inequalities for these interventions changed from 1982 to 2015 in Pelotas, Brazil. Methods Using perinatal data from the 1982, 1993, 2004 and 2015 Pelotas birth cohort...
Article
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Background Brazil experienced important progress in maternal and child health in recent decades. We aimed at describing secular trends as well as socioeconomic and ethnic inequalities in reproductive history indicators (birth spacing, previous adverse perinatal outcome, parity and multiple births) over a 33-year span. Methods Four population-based...
Article
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Background Pre-pregnancy nutritional status and weight gain during pregnancy have short- and long-term consequences for the health of women and children. This study was aimed at evaluating maternal height,- and overweight or obesity at the beginning of the pregnancy and gestational weight gain, according to socioeconomic status and maternal skin co...
Preprint
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Background Objective methods to measure physical activity (PA) can lead to better cross-cultural comparisons, monitoring temporal PA trends, and measuring the effect of interventions. However, when applying this technology in field-work, the accelerometer data processing is prone to methodological issues. One of the most challenging issues relates...
Poster
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Driven by significant and sustained growth in research activity over the last twenty years, sedentary behaviour has risen in prominence as a potential risk factor for chronic disease morbidity and mortality, capturing the attention of policy-makers and mainstream media. Surveillance of sedentary behaviour is required to establish the scale of the b...
Article
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OBJECTIVE To evaluate the level of physical activity in general and by domains of practice in the rural area of Pelotas, State of Rio Grande do Sul, Brazil, as well as their associated factors. METHODS This is a population-based, cross-sectional study with adults living in the rural area of Pelotas. The questionnaire used to measure the prevalence...
Article
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Educação Física nos anos iniciais do ensino fundamental: intensidade dos esforços físicos e conteúdos desenvolvidos Resumo Este estudo transversal de base escolar teve como objetivo caracterizar as aulas de Educação Física nos anos iniciais do ensino fundamental das escolas públicas e privadas da cidade de Pelotas, RS. Foram analisadas a duração e...
Article
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Hypertension and chronic kidney disease (CKD) are global public health problems, both associated with higher risk of cardiovascular (CV) and renal events. This trial randomized non-diabetic adult patients with hypertension and CKD stages 2–4 to 16 weeks of aerobic and resistance training or usual care. The primary outcome was the change in estimate...
Article
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Avaliar o conhecimento de profissionais de saúde sobre a existência ou não de associação entre inatividade física e oito morbidades (diabetes, hipertensão arterial, aids, osteoporose, câncer de pulmão, depressão, cirrose hepática e infarto agudo do miocárdio). Foi realizado um estudo transversal em uma amostra representativa de 1.600 unidades básic...
Article
Background Maternal physical activity (PA) during pregnancy could affect offspring's neurodevelopment. However, studies in humans in early childhood are scarce and show inconsistent results. We aimed to review the literature on the association between physical activity during pregnancy and offspring neurodevelopment. Methods LILACS, MEDLINE and We...
Article
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Background The work of The Global Observatory for Physical Activity-GoPA! is the first global effort to compile standardized country-level surveillance, policy and research data for physical activity in order to better understand how countries and regions address promoting physical activity. GoPA! developed standardized country-specific physical a...