Systematic Review and Meta-Analysis of the Prevalence of Physical Activity in South American Children.

Objectives: This study aimed to systematically review and apply meta-analytic procedures to investigate the prevalence and time spent in different physical activity (PA) intensities among South American children across the childhood spectrum, according to sex and protocol used.

Methods: We searched PubMed, Web of Science, Scopus, Latin American and Caribbean Health Sciences Literature (LILACS), and Scientific Electronic Library Online (SCiELO); only studies with children between 0 and 11 years were included. Random-effects meta-analysis models were used to calculate the pooled estimates with their respective 95% confidence intervals (CI).

Independent and Joint Associations of Physical Fitness and Mental Health Symptoms in University Students: A Cross-sectional Analysis.

The relationship between physical fitness and mental health is recognized, with evidence suggesting that physical fitness components may offer added protection against mental health issues. However, whether this applies to university students, who commonly experience anxiety and depression, is less clear. This cross-sectional study explores the association of physical fitness with anxiety and depression symptoms in ≥18-year-old students from seven Brazilian universities.

Intersectionality and mental health in university students: a jeopardy index approach.

To explore the associations between current mental health symptoms and social disparities in university students. We recruited participants from nine public universities in Brazil, from August to November 2022, using online advertisements and in-person lectures. All participants completed an online survey containing social (sex, race/color, gender identity, sexual orientation, and income) and mental health assessments.

Opportunities for physical activity in the school environment and their association with physical activity and sedentary behavior in Brazilian adolescents.

The school environment (SE) plays a crucial role in determining adolescents' physical activity (PA), including physical education classes, sports spaces and facilities, and active recreation. This study aimed to evaluate the association between the SE and indicators of PA and sitting time (ST), while exploring Brazilian sociodemographic differences. The SE was characterized by PA practices, PA outside regular class hours, running/athletic track condition, use of the courtyard for PA with a professional, participation in inter-school games or physical-sports competitions, and the number of physical education classes per week.

Correlates of Moderate-to-Vigorous Physical Activity Among Prepubertal Girls: A Bioecological Approach.

Objective: This study aimed to analyze the correlates of moderate-to-vigorous physical activity (MVPA) among prepubertal girls using a broad spectrum of variables, including biological factors, behavioral attributes, and maternal and built environmental factors.

Methods: The sample was comprised of 81 girls, aged 7.50-9.

Mediating role of organized sports participation on the relationship between body fatness and arterial wall thickness among adolescents: ABCD Growth Study.

Background: Participation in sports is the main manifestation/subdomain of physical exercise in adolescents and affects cardiovascular health in different ways.

Objectives: To analyze the relationship between body fatness and arterial wall thickness as well as the mediating role of sports participation in this relationship among adolescents.

Methods: This cross-sectional study is linked to the ABCD-Growth Study conducted in Presidente Prudente, Brazil.

Clustering of obesogenic behaviours amongst 140 052 South American adolescents: a harmonized meta-analysis of national health surveys.

Background: Physical activity, sedentary behaviour, and diet synergically coexist (in different ways) within adolescents' lifestyles. Thus, understanding obesogenic behaviour patterns within populations is critical to promoting adolescents' health. This study investigates clustering patterns of adolescents' obesogenic behaviours across South American countries.

Association of 24-h movement behaviors during Covid-19 pandemic with spinal musculoskeletal disorders in undergraduate students: a cross-sectional study.

Background And Aims: Musculoskeletal disorders (MSD) are an important health problem, and the Covid-19 pandemic affected several lifestyle and health aspects worldwide, including moderate-to-vigorous physical activity (MVPA), sedentary behavior (SB) and sleep time, which compose the 24-h movement guidelines (24-hMG). It is unclear whether meeting 24-hMG during pandemic have been associated with MSD in adult population and this study aimed to analyze the association of meeting 24-hMG with spinal MSD in undergraduate students during Covid-19 pandemic.

Methods: A sample of 71 undergraduate students were assessed (24.

Biocultural correlates of gross motor coordination in prepubescent children: A cross-sectional study.

Aim: This study aimed to explore the association of gross motor coordination (GMC) with a matrix of biocultural factors in prepubescent children, taking into account weight status, somatic maturation, sociodemographic variables, and type of school.

Methods: One hundred twenty-nine prepubescent children, of both sexes, aged between 8.00 and 8.

Factors associated with the incidence and worsening of back pain during the first wave of COVID-19 in Brazil.

The article aims to estimate the incidence and worsening of back pain (BP) during the first wave of COVID-19 in Brazil, as well as to investigate demographic, socioeconomic factors and associated changes in living conditions. ConVid - Behavior Research, applied between April and May 2020, was used as data source. The number and distribution of respondents who developed BP and those who had a worsening of the preexisting problem, their 95% confidence intervals and Pearson's Chi-square test were estimated.

Latent Tuberculosis Infection Diagnosis Using QuantiFERON-TB Gold Plus Kit Among Correctional Workers: A Cross-Sectional Study in Francisco Beltrão-PR, Brazil.

Correctional workers form a high-priority group for tuberculosis control measures because of their high exposure and risk. This cross-sectional study conducted in April and May 2022 included 71 criminal police officers from the State Penitentiary of Francisco Beltrão-PR, Brazil. Their sociodemographic and laboratory data were collected.

Association between patterns of sedentary time and academic performance in adolescents: the mediating role of self-concept.

Objective: To analyze the association between the pattern of sedentary time (bouts and breaks) with academic performance, with an emphasis on the mediating role of self-concept.

Methods: Participants in the cross-sectional study were 394 adolescents (208 girls), aged 10-14 years, from sixth grade from Londrina, Paraná, Brazil. The sedentary time pattern was measured through accelerometry.

Association of parents' physical activity and weight status with obesity and metabolic risk of their offspring.

Our aim was to analyze the joint association of parental characteristics and offspring obesity indicators with metabolic risk in adolescents. A cross-sectional study was carried out with 972 adolescents and their parents. We observed that overweight adolescents who have a normal weight mother show lower metabolic risk in comparison with their counterparts with overweight mothers.

Mental health of Brazilian adolescents during the COVID-19 pandemic.

We aimed to assess the factors associated with frequent sadness and nervousness in Brazilian adolescents, during the Covid-19 pandemic, in 9470 adolescents (aged 12-17 years), interviewed from June 27 to September 17, 2020. Prevalences and prevalence ratios were estimated according to socio-demographic variables and factors related to family, school, friends, and health. Brazilian adolescents often felt sad (32.

Self-perceived social relationships are related to health risk behaviors and mental health in adolescents.

Although changes have been observed in social relationships in the recent years, especially among younger generations, little evidence is available concerning factors associated with adolescents' perceived social relationships. In this study we investigated the association between self-perceived social relationships, health-related behaviors, biological maturation, and mental health in adolescents. This is a cross-sectional study conducted with 1,336 adolescents (605 boys and 731 girls) aged between 10 to 17 years from public schools.

Daily physical activity, human development index and insomnia in a representative sample of Brazilian adolescents: a cross-sectional analysis.

Background: Although there is a growing body of research pointing towards the need to investigate how different movement behaviors, such as physical activity and sleep, influence each other, the joint relationship between these factors and insomnia has been little explored among adolescents in developing countries.

Objectives: To investigate the association between daily physical activity and insomnia in a national sample of Brazilian adolescents, according to the Human Development Index (HDI) of each Brazilian region.

Design And Settings: Cross-sectional study on 102,072 Brazilian students aged 11 to 19 years, selected from all regions of the country.

Associations of Sociodemographic Factors and Health Behaviors with the Emotional Well-Being of Adolescents during the COVID-19 Pandemic in Brazil.

This cross-sectional study utilizes data from a nationwide web-based survey aimed to identify the factors affecting the emotional well-being of Brazilian adolescents aged 12-17 during the period of school closures and confinement. Data collection took place from 27 June to 17 September 2020. We used the "virtual snowball" sampling method, and students from private and public schools were included.

The COVID-19 pandemic and changes in the lifestyles of Brazilian adolescents.

Objective: To analyze changes in the lifestyles of Brazilian adolescents during the COVID-19 pandemic.

Methods: Cross-sectional study carried out with adolescents who participated in the survey "ConVid Adolescentes - Pesquisa de Comportamentos". The indicators related to lifestyles before and during the COVID-19 pandemic were evaluated: consumption of healthy and unhealthy foods, physical activity and sedentary behavior, smoking and consumption of alcohol.

Noncommunicable diseases and changes in lifestyles during the COVID-19 pandemic in Brazil.

Objective: To compare lifestyle changes during the COVID-19 pandemic according to the presence or absence of noncommunicable diseases (NCDs) in Brazilian adults.

Methods: Cross-sectional study, using data from the ConVid survey, between April and May 2020. The following variables were evaluated: lifestyle and presence of one or more NCDs (diabetes, hypertension, respiratory disease, heart disease, and cancer).

ConVid - Behavior Survey by the Internet during the COVID-19 pandemic in Brazil: conception and application methodology.

The ConVid - Behavior Survey was conducted in Brazil from April 24 to May 24, 2020, aiming to investigate changes in lifestyles and health conditions during the COVID-19 pandemic. In this article, we present the conception and methodology of the research. We used a cross-sectional study using an Internet questionnaire, with questions validated in previous health surveys.

Changes in the prevalence of physical inactivity and sedentary behavior during COVID-19 pandemic: a survey with 39,693 Brazilian adults.

This study analyzed changes in the prevalence of physical inactivity and sedentary behaviors according to correlates during the COVID-19 pandemic among Brazilian adults. A national retrospective online survey was conducted with 39,693 Brazilian adults. Physical activity (weekly frequency and daily duration; cut-off point of 150 minutes/week), TV-viewing time and computer/tablet use (daily duration; cut-off point of 4 hours/day) before and during the pandemic period were reported.

Factors affecting Brazilians' self-rated health during the COVID-19 pandemic.

This is a cross-sectional study investigating the factors affecting brazilians' self-rated health during the COVID-19 pandemic, based on data from the web-based behavior survey. Carried out from April 24 to May 24, 2020, the survey recruited participants by a chain sampling procedure. Its outcome was the worsening of self-rated health during the pandemic.