Mark S. Tremblay's research while affiliated with Public Health Agency of Canada and other places
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Publications (822)
We explored associations between neighbourhood environments and children and
youths’ moderate-to-vigorous physical activity (MVPA) during three different waves of the COVID-19 pandemic: spring 2020, fall 2020 and spring 2021, using three nationally representative cross-sectional surveys. In wave 2, higher dwelling density was associated with lower...
p> Objective: The American Academy of Pediatrics recommends developmental surveillance and screening in early childhood in primary care. The 18-month visit may be an ideal time for identification of children with delays in language and communication, or symptoms of autism spectrum disorder (ASD). Little is known about the predictive validity of dev...
p> Objective: The American Academy of Pediatrics recommends developmental surveillance and screening in early childhood in primary care. The 18-month visit may be an ideal time for identification of children with delays in language and communication, or symptoms of autism spectrum disorder (ASD). Little is known about the predictive validity of dev...
Purpose
Heterogeneity of descriptors and outcomes measured and reported in sedentary behaviour (SB) research hinder the meta-analysis of data and accumulation of evidence. The objective of the Core Research Outcomes for Sedentary Behaviour Interventions (CROSBI) consensus study was to identify and validate, a core outcome set (COS) to report (what,...
Background
Parents’ own movement behaviours can influence those of their children, thus contributing to the health and well-being of the whole family. Parents experienced a shift in work and childcare responsibilities during the COVID-19 pandemic. This may have led to a reduction in their healthy movements. This study examined the prevalence and co...
Background:
We tested whether 24-hour movement behaviors modified the effect of the association between anxiety and depression symptoms among adolescents.
Methods:
This cross-sectional study included 4141 adolescents aged 15 to 19 years (50.0 % females) across all Brazilian geographic regions. Using self-reported data, 4.4 % (n = 180) reported h...
Purpose: To investigate the validity of the Physical Activity Questionnaire for Older Children (PAQ-C) to assess the moderate-to vigorous-intensity physical activity (MVPA) level of children and adolescents diagnosed with HIV and propose cut-points, with accelerometer measures as the reference method. Method: Children and adolescents, aged 8-14 yea...
Purpose:
To investigate the validity of the Physical Activity Questionnaire for Older Children (PAQ-C) to assess the moderate- to vigorous-intensity physical activity (MVPA) level of children and adolescents diagnosed with HIV and propose cut-points, with accelerometer measures as the reference method.
Method:
Children and adolescents, aged 8-14...
Introduction:
The ParticipACTION Report Card on Physical Activity for Children and Youth is the most comprehensive national assessment of physical activity and related behaviors, characteristics, and opportunities for children and youth. The 2022 Report Card assigned grades based on data gathered during the COVID-19 pandemic to reflect this extrao...
Background
There are a variety of costs associated with publication of scientific findings. The purpose of this work was to estimate the cost of peer review in scientific publishing per reviewer, per year and for the entire scientific community.
Methods
Internet-based self-report, cross-sectional survey, live between June 28, 2021 and August 2, 20...
Optimal growth and development in childhood and adolescence is crucial for lifelong
health and well-being1–6
. Here we used data from 2,325 population-based studies, with
measurements of height and weight from 71 million participants, to report the height
and body-mass index (BMI) of children and adolescents aged 5–19 years on the basis
of rural an...
Highlights 1. Meeting the combination of all three 24-HMB guidelines, or a combination of screen time and physical activity, was associated with reduced odds of serious difficulties in concentrating, remembering, or making decisions. 2. Meeting the combination of all three 24-HMB guidelines was associated with reduced odds of difficulties making an...
Background:
Children from families speaking a non-official language at home may be particularly at risk for low physical activity (PA), underscoring a need to investigate correlates of PA in this subpopulation.
Methods:
We recruited 478 children in 37 schools stratified by area-level socioeconomic status (SES) and type of urbanization within thr...
Introduction
Depuis 2015, au Canada et ailleurs dans le monde, on assiste à une croissance de l’intérêt pour les bienfaits du jeu à l’extérieur (en plein air) sur la santé, le bien-être et le développement dans leurs dimensions physique, émotionnelle, sociale et liée à l’environnement, aussi bien chez les adultes que chez les enfants et les jeunes....
Introduction
Since 2015, there has been growing interest in Canada and beyond on the benefits of outdoor play for physical, emotional, social and environmental health, wellbeing and development, for adults as well as children and youth.
Methods
This scoping review aims to answer the question, “How, and in what context, is adult-oriented outdoor pl...
Background:
As a key factor for the prevention of childhood obesity, WHO recommends a specific balance of movement behaviours (ie, physical activity, sedentary behaviour, and sleep) across the 24-h day for children younger than 5 years. Substantial evidence underpins our understanding of the benefits for healthy growth and development; however, li...
Independent mobility (IM) is associated with children's physical activity and indicators of social, motor, and cognitive development. We surveyed Canadian parents of 7- to 12-year-olds (n = 2291) about social-ecological correlates of IM in the second wave of COVID-19 (December 2020). We used multi-variable linear regression models to identify corre...
Background: Evidence-based 24-hour movement behavior (24-HMB) guidelines have been developed to integrate recommendations for the time spent in the behaviors of physical activity, sedentary behavior, and sleep. For children and adolescents, these 24-HMB guidelines recommend a maximum of two hours of recreational screen time (as part of sedentary be...
Purpose:
The purposes of the current study were to identify risk profiles for nonadherence among children and youth (5-17 y) at the 6-month mark of the COVID-19 pandemic and to discuss similarities and differences between risk profiles identified in the current study and those identified at the 1-month mark of the pandemic.
Methods:
Data were pa...
Introduction
Since 2015, interest in the benefits of outdoor play for physical, emotional, social and environmental health, well-being and development has been growing in Canada and elsewhere.
Methods
This scoping review aims to answer the question, “How, and in what context, is children’s and youth’s outdoor play being studied in Canada?” Include...
Background
Prolonged periods of sedentary behaviour, for instance, engendered by home confinement in Shenzhen city, has led to negative mental health consequences, especially in adolescents. Previous research suggests, in general, that sedentary behavior can increase negative emotions. However, the specific mechanism driving the relationship betwee...
Introduction: Associations between physical activity (PA), sedentary behavior (SED), and sleep-24-h movement behaviors (MBs)-and children/youth's mental health (MH) is well-established though often only examined separately. Methods: This scoping review sought to answer the question: What evidence is there on the association between 24-h movement be...
Introduction
Depuis 2015, au Canada et ailleurs dans le monde, on assiste à une croissance de l’intérêt pour les bienfaits du jeu à l’extérieur (en plein air) sur la santé, le bien-être et le développement dans leurs dimensions physique, émotionnelle, sociale et liée à l’environnement.
Méthodologie
Cet examen de la portée vise à répondre à la ques...
The global transition to current low levels of habitual physical activity among children and adolescents began in the second half of the last century. Low physical activity harms health in both the short term (during childhood and adolescence) and long term (during adulthood). In turn, low physical activity could limit progress towards several sust...
Background:
Previous research shows that children from ethnic minority groups spend less time outdoors. Using data collected in 3 regions of Canada, we investigated the correlates of outdoor time among schoolchildren who spoke a nonofficial language at home.
Methods:
A total of 1699 children were recruited from 37 schools stratified by area-leve...
Background: The Global Matrix 4.0 on physical activity (PA) for children and adolescents was developed to achieve a
comprehensive understanding of the global variation in children’s and adolescents’ (5–17 y) PA, related measures, and key
sources of influence. The objectives of this article were (1) to summarize the findings from the Global Matrix 4...
Background:
We examined recent global secular trends in 5 indicators of child and adolescent physical activity and sedentary behavior (Overall Physical Activity, Organized Sport and Physical Activity, Active Play, Active Transportation, and Sedentary Behavior) and 4 influences on these (Family and Peers, School, Community and Environment, and Gove...
Background:
The aim of this study was to explore the associations between the 10 key indicators of the Global Matrix 4.0 project and human development index (HDI) at a national level according to sex, age, area of residence, and ability levels.
Methods:
Information from the 57 countries/localities included in the Global Matrix 4.0 project was co...
Background:
Macrolevel factors such as economic and climate factors can be associated with physical activity indicators. This study explored patterns and relationships between economic freedom, climate culpability, and Report Card grades on physical activity-related indicators among 57 countries/jurisdictions participating in the Global Matrix 4.0...
Background:
This brief report provides an overview of the Active Healthy Kids Global Alliance (AHKGA); an introduction to the Global Matrix 4.0; an explanation of the value and opportunities that the AHKGA efforts and assets provide to the physical activity research, policy, practice, and advocacy community; an outline of the series of papers rela...
Background
The American Academy of Pediatrics recommends developmental screening at multiple visits using both a general developmental tool and an autism spectrum disorder (ASD)-specific tool. The Canadian Paediatric Society recommends screening at a single visit at 18 months. There is no consensus on which tool is best suited for one-time screenin...
Background
/Objective: This paper aimed to compare the report card grades among 15 Asian jurisdictions participating in the Global Matrix 4.0, and to explore differences in regional cultural and policy factors related to physical activity behaviors.
Methods
All participating jurisdictions followed a harmonized process to develop a country report c...
Objectives:
To validate parent-reported child habitual total physical activity against accelerometry and three existing step-count thresholds for classifying 3 h/day of total physical activity in pre-schoolers from 13 culturally and geographically diverse countries.
Design:
Cross-sectional validation study.
Methods:
We used data involving 3- a...
Background
Physical inactivity is a persistent and worsening population health concern in Asia. Led by the Active Healthy Kids Global Alliance, Global Matrix (GM) initiative provides an opportunity to explore how regional and cultural differences across 18 Asian countries relate to physical activity (PA) participation among children and adolescents...
Objective
The American Academy of Pediatrics recommends developmental surveillance and screening in early childhood in primary care. The 18-month visit may be an ideal time for identification of children with delays in language and communication, or symptoms of autism spectrum disorder (ASD). Little is known about the predictive validity of develop...
Background
The measurement of physical fitness has a history that dates back nearly 200 years. Recently, there has been an increase in international research and surveillance on physical fitness creating a need for setting international priorities that could help guide future efforts.
Objective
This study aimed to produce a list of the top 10 inte...
Limitations in the use of public spaces have impacted the frequency and duration of movement behaviours (physical activity, sedentary behaviour, sleep) and outdoor activities of children and adolescents. Whether pandemic-induced changes in movement behaviours are related to the health-related quality of life (HRQoL) of children and adolescents is u...
Background
The Canadian 24-hour movement behavior (24-HMB) guidelines suggest that a limited amount of screen time use, an adequate level of physical activity (PA), and sufficient sleep duration are beneficial for ensuring and optimizing the health and quality of life (QoL) of children and adolescents. However, this topic has yet to be examined for...
Heterogeneity of descriptors and outcomes measured and reported in sedentary behaviour (SB) research hinder the meta-analysis of data and accumulation of evidence. The objective of the Core Research Outcomes for Sedentary Behaviour Interventions (CROSBI) consensus study was to identify and validate, a core outcome set (COS) to report (what, how, wh...
Aim
International comparisons of public health measures relative to observed best practice are increasingly important for evaluating community health promotion strategies and policies such as meeting or not meeting public health guidelines. This study aimed to identify methods enabling robust evaluation with such binary effect measures at a populat...
Background: Adolescents with obesity have lower academic performance, but little is known about the association between body weight in early childhood and school readiness. The objective was to examine the association between age- and sex-standardized body mass index (zBMI) and body weight status and school readiness in young children. Methods: A p...
Background
The importance of muscular fitness (MF) in the performance of activities of daily living is unequivocal. Additionally, emerging evidence has shown MF can reduce cardiometabolic risk in children and adolescents.
Objectives
The purpose of this study was to examine and summarize the evidence regarding the relationship between MF phenotypes...
Background
Physical literacy (PL) is a multi-dimensional concept that provides a holistic understanding of movement and physical activity. PL contains an affective, a physical, and a cognitive domain, which together lay the foundation for the individual’s capacity and the tendency for participating in physical activities currently and throughout li...
Background
A recent dialogue in the field of play, learn, and teach outdoors (referred to as “PLaTO” hereafter) demonstrated the need for developing harmonized and consensus-based terminology, taxonomy, and ontology for PLaTO. This is important as the field evolves and diversifies in its approaches, contents, and contexts over time and in different...
Restrictions to childcare, schools, and after-school programs during COVID-19 have meant that many programs and organizations have adapted to take place outdoors. To better understand the nature and extent of these adaptations, we conducted a Canada-wide environmental scan of outdoor play-based child and youth projects, programs, activities, and se...
The purpose of this study was to explore the association between participation in organized sport and a broad array of mental health difficulties among US children and adolescents. The data (cross-sectional) were from Data Release 3.0 (one-year follow-up visits on the full cohort) of the Adolescent Brain Cognitive Development (ABCD) study-a broadly...
Abstract Background In Sub-Saharan African countries, rapid urbanization and increasing socio-economic status are associated with a transition to decreased physical activity (PA). A more sedentary lifestyle is linked to increased body fat leading to increments in leptin levels. Since rodent and human studies in high-income countries have shown that...
Objectives:
Public health restrictions varied by region during the COVID-19 pandemic and reduced opportunities for children to be physically active. The purpose of this study was to assess regional differences in movement behaviours of Canadian children and youth during the second wave of the COVID-19 pandemic.
Methods:
A national sample of Cana...
The aims of this study were: to determine for the first time the prevalence of a national sample of Spanish minors meeting the 24-h movement guidelines; to determine their correlates; and to examine their associations with socioemotional behavioral problems. Cross-sectional data from the Spanish National Health Survey (2017) were analyzed for this...
Background:
Participation in outdoor play has been extensively documented as beneficial for the health, well-being and development of children. Canadian early childhood education centres (ECECs) are important settings in young children’s lives and provide opportunities to participate in outdoor play. However, there are barriers to the provision of...
BACKGROUND
Participation in outdoor play has been extensively documented as beneficial for the health, well-being, and development of children. Canadian early childhood education centers (ECECs) are important settings in young children’s lives and provide opportunities to participate in outdoor play. However, there are barriers to the provision of...
Background
The purpose of this systematic review was to examine the associations between school-related sedentary behaviours and indicators of health and well-being in children and youth (~ 5–18 years) attending school.
Methods
This review was conducted to inform the development of School-Related Sedentary Behaviour Recommendations. Peer-reviewed,...
Background
Existing sedentary behaviour guidelines for children and youth target overall sedentary behaviour and recreational screen time, without any specific recommendations regarding school-related sedentary behaviours (i.e., sedentary behaviours performed during the school day, or within the influence of school). The purpose of this paper is to...
Introduction
Increased screen time is a ubiquitous part of adolescent life and is adversely associated with their well-being. However, it remains unclear whether different types of screen time have equivalent associations, or if relationships are dose-dependent.
Methods
The data were from 2 nationally representative Health Behaviour in School-aged...
Background:
This study examined associations between sociodemographic factors and meeting versus not meeting the new Canadian 24-Hour Movement Guidelines recommendations.
Methods:
The study is based on 7651 respondents aged 18-79 years from the 2007 to 2013 Canadian Health Measures Survey, a nationally representative, cross-sectional survey. Soc...
Background Physical literacy (PL) is a multi-dimensional concept that provides a holistic understanding of movement and physical activity. PL contains an affective, a physical, and a cognitive domain, which together lay the foundation for the individual’s capacity and the tendency for participating in physical activities currently and throughout li...
Background
The primary aim of this study was to determine if screen use in early childhood is associated with overall vulnerability in school readiness at ages 4 to 6 years, as measured by the Early Development Instrument (EDI). Secondary aims were to: (1) determine if screen use was associated with individual EDI domains scores, and (2) examine th...
Objectives: Excessive recreational screen time (RST) is associated with detrimental effects for physical, psychological and cognitive development. This article aims to describe the prevalence of excessive RST among Colombian preschoolers, children and adolescents and explore its factors associated.
Methods: We analyzed data from the National Survey...
Purpose:
There is a paucity of global data on sedentary behaviour during early childhood. The purpose of this study was to examine how device-measured sedentary behaviour in young children differed across geographically, economically, and socio-demographically diverse populations, in an international sample.
Methods:
This multinational, cross-se...
Background:
Physical activity (PA) is associated with numerous health benefits among children and youth. However, few studies have examined how active transportation (AT) and device-based measures of PA vary within and between countries in sub-Saharan Africa.
Purpose:
This cross-sectional study sought to investigate the prevalence and correlates...
Purpose
Meeting the 24-Hour Movement Guidelines (physical activity, screen time, and sleep duration) has been associated with positive health indicators. However, there are no previous meta-analyses that have examined the overall adherence to the 24-Hour Movement Guidelines from pre-school to adolescence across the world. Therefore, the main purpos...
Background:
The Canadian 24-Hour Movement Guidelines for Adults (18-64 years and 65 years or older) were launched in October 2020 and provide evidence-based recommendations for physical activity, sedentary behaviour and sleep. The purpose of this study was to examine whether meeting the 24-Hour Movement Guidelines overall, and different combinatio...
Aim
Parents’ psychological problems may affect children’s screen time, but research has been scarce. We examined the association between parental psychological problems and children’s screen media behaviours in a nationally representative sample.
Methods
The participants were from the Adolescent Brain Cognitive Development study, recruited by prob...
Background
In 2018, the Australian Government updated the Australian Physical Activity and Sedentary Behaviour Guidelines for Children and Young People. A requirement of this update was the incorporation of a 24-hour approach to movement, recognising the importance of adequate sleep. The purpose of this paper was to describe how the updated Austral...
(1) To explore individual and family characteristics related to anthropometric and cardiometabolic health indicators and (2) examine whether characteristics that correlate with cardiometabolic health indicators differ across severity of obesity at time of entry to Canadian pediatric weight management clinics.
We conducted a cross-sectional analysis...
Background
The aim of this study was to translate the Canadian Assessment of Physical Literacy, second edition (CAPL-2) into Danish language, adapt it to Danish context and to test the measurement properties on a sample of Danish school children.
Methods
The CAPL-2 measurement tool was translated into Danish language and adapted for the Danish con...
This study determined if meeting the Canadian 24-Hour Movement Guidelines recommendations are associated with all-cause mortality. Participants were 3471 adults from the 2005–2006 U.S. National Health and Nutrition Examination Survey followed for mortality over 11 years. They were classified as meeting or not meeting recommendations for sleep durat...