• Home
  • Jérémy Vanhelst
Jérémy Vanhelst

Jérémy Vanhelst
Université Sorbonne Paris Nord

PhD

About

119
Publications
13,095
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,597
Citations
Citations since 2016
63 Research Items
1317 Citations
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250

Publications

Publications (119)
Article
Abstract The aim was to assess the technical variability of a new wrist-worn accelerometer under controlled conditions with a shaker device and during normal daily physical activities (PAs). In the first experiment, 10 wrist-worn accelerometers (Vivago(®) Wellness, Paris, France) were attached to the shaker device. Variability was tested at five sh...
Article
Full-text available
Objectives In children, achieving an acceptable degree of accuracy from dietary or physical activity (PA) assessments remains a challenge. Children tend to overestimate their time spent in daily PA and underestimate their dietary intake of fat and sugar. Because parents play a key role in family lifestyle decisions, including children’s food choice...
Article
Full-text available
Background: Pediatricians' clinical practice and health interventions in youths require instruments with adequate psychometric properties to assess physical activity (PA), sedentary behaviors (SB), and their subdomains. Objective: To assess the psychometric properties of the Children and Adolescents Physical Activity and Sedentary-Questionnaire...
Article
Full-text available
Introduction: Inflammatory bowel disease (IBD) is a chronic disorder of the gastrointestinal tract, associated with adverse health consequences that may adversely influence physical activity and body composition in youth. These effects may lead to changes in physical fitness, which is positively associated with health-related outcomes. The aim is t...
Article
Full-text available
Numerous studies reported a significant decline in physical activity level in adolescents as a result of the COVID-19 lockdown. Physical fitness is recognized as a powerful marker of health in youth. The aim of this study was to evaluate the impact of the COVID-19 pandemic lockdown on health-related physical fitness in French adolescents. Two cross...
Preprint
Full-text available
Objectives (1) To develop reference values for health-related fitness European children and adolescents aged 6–18 years that are the foundation for the web-based, open-access and multi-language fitness platform (FitBack); (2) To provide comparisons across European countries. Methods This study builds on a previous large fitness reference study in...
Article
Full-text available
The study purpose was to assess the impact of birth weight and breastfeeding duration on physical fitness components. Study participants were 985 adolescents boys and 1246 girls (12.5–17.5 years) participating in the HELENA study. Standardised physical fitness procedures included: cardio-respiratory fitness, flexibility, upper body muscular strengt...
Article
Full-text available
Objective Because the prevalence overweight and obesity remains high during adolescence in Europe, tracking weight status in children and adolescents is needed. We aimed to estimate French trends in the prevalence of weight status in children and adolescent from 2008 to 2018. Results The prevalence of overweight and obesity were higher in boys (P...
Article
Full-text available
Cardiovascular diseases are the leading cause of mortality worldwide. These diseases originate in childhood, and a better understanding of their early determinants and risk factors would allow better prevention. The BELINDA (BEtter LIfe by Nutrition During Adulthood) study is a 10–14-year follow-up of the HEalthy Lifestyle in Europe by Nutrition in...
Article
One of the current main public health problems is the prevalence of obesity in children. Unhealthy lifestyle behaviors such as poor dietary habits, high sedentary screen time (SST), and low levels of physical activity (PA) have a strong tendency to track from childhood into adulthood. The aim of this manuscript is to assess the association between...
Article
Diagnoform est un programme d’évaluation de la condition physique fruit d’un travail initié en 2004, via la ligue Hauts-de-France d’athlétisme. Il permet aux professionnels de l'activité physique, du sport et de la santé, de mesurer les grandes qualités physiques de leur public, en utilisant le moins de matériel possible, et en facilitant le passag...
Article
Introduction et but de l’étude La condition physique est un marqueur de santé corrélé à la survenue de plusieurs maladies chroniques tout au long de la vie. L’influence de facteurs périnataux sur la condition physique peut être détectée dès l’adolescence. L’objectif de l’étude était d’évaluer l’effet du poids de naissance et de l’allaitement matern...
Article
Introduction et but de l’étude La transition de l’adolescence à l’âge adulte comprend plusieurs changements majeurs, notamment l’indépendance, le statut scolaire et professionnel, les nouveaux centres d’intérêts et rôles sociaux. Elle est associée à une modification des habitudes de vie, notamment l’activité physique (AP) qui est un des déterminant...
Article
Introduction et but de l’étude Le programme Vivons en Forme® (VIF), est une intervention communautaire destinée à prévenir de l’obésité, du surpoids, à la promotion de la santé et de la forme physique chez l’enfant. La méthode VIF® repose sur une dynamique de co-construction avec l’ensemble des acteurs locaux. En s’investissant dans cette démarche,...
Article
Introduction et but de l’étude Les maladies cardiovasculaires constituent la première cause de mortalité à l’échelle européenne et mondiale. Leur développement débute tôt dans la vie, modulé par des profils alimentaires et d’activité physique qu’il est nécessaire d’identifier dès l’adolescence. L’étude BELINDA (Better Life by Nutrition During Adult...
Article
Full-text available
Background: There is an alarming and constant worldwide progression of physical inactivity and sedentary behaviors in children and adolescents. The present paper summarizes findings from France's 2020 Report Card on physical activity for children and youth, comparing its results to its 2 previous editions (2016 and 2018). Methods: France's 2020...
Article
Background : The aim of this study was to assess the impact of 8-month school and community-based interventions on the lifestyle behaviors in French children. Methods : The study presents a longitudinal design, including 153 children (68 boys, 85 girls) aged from 8 to 10 years. A community-based programme was performed in two pilot towns in Norther...
Article
Full-text available
Purpose: This study was aimed to analyze the mediation role of cardiorespiratory fitness (CRF) on the association between fatness and cardiometabolic risk scores (CMRs) in European adolescents. Methods: A cross-sectional study was conducted in adolescents (n = 525; 46% boys; 14.1 § 1.1 years old, mean § SD) from 10 European cities involved in the H...
Article
We assessed the association between school time and physical fitness in adolescents. The study included 2,024 adolescents, aged 12.5-17.5 years, who participated in the Healthy Lifestyle in Europe by Nutrition in Adolescence study. Health-related physical fitness components were assessed using the physical fitness tests battery. Cardiovascular risk...
Article
Objectives: To develop a self-administered children health-related behaviors assessment, and to test its feasibility and reliability in a group of French children. Methods: A sample of 216 children participated in the first stage of this study, dedicated to the feasibility assessment. An independent sample of 99 children participated in the assessm...
Article
Background: While academic achievement has been associated with physical activity, the present work questions the potential association between the physical fitness level of adolescents and the type of school they attend, ranging from academic to technical schools. Methods: 20,228 young French students from 76 schools (9,196 females), mean age 1...
Article
The aim of this study was to assess PA patterns among children and adolescents with inflammatory bowel disease (IBD). Sixty participants with IBD (42 Crohn’s disease [CD], 10 ulcerative colitis [UC], and 8 IBD—unclassified [IBD-U], 30 male patients) in remission (n = 45) or with mild disease (n = 15) were compared with 60 healthy age- and sex-match...
Article
Background: Obesity in children is considered the main childhood health problem. Objective: To assess the impact of 7-year community-based interventions on the trend prevalence of overweight and obesity in French preschool children and primary school children between 2008 and 2015. Methods: Two cross-sectional studies were performed in the last g...
Article
A high level of physical fitness is associated with cardiovascular health in adolescents. We describe change in physical fitness levels assessed at two time points over 3 years. The study presents a longitudinal design, with the first phase data collection at 8 years and the second phase carried out at 11 years. A total of 516 children (254 boys) a...
Article
Objective To assess the prevalence of underweight, overweight and obesity in French children from 2013 to 2017. Design Cross-sectional study performed in fourteen regions of France. Physical measures included weight, height and BMI. Underweight, overweight and obesity were defined according to age- and sex-specific BMI cut-off points from the Inte...
Article
Full-text available
Introduction: Low bone mineral density (BMD) is a frequent issue in children and adolescents with inflammatory bowel disease (IBD). Several studies in healthy populations have reported a positive impact of physical activity (PA) on bone health. Recently, an observational study in paediatric patients with IBD showed a significant positive relationsh...
Article
Background: A high level of physical fitness is associated with cardiovascular health in adolescents. We describe change in physical fitness levels assessed at two time points over 3 years. Methods: The study presents a longitudinal design, with the first phase data collection at 8 years and the second phase carried out at 11 years. A total of 5...
Article
Background Screen media usage has become increasingly commonplace in daily life with children initiating themselves to screen media at an early age. Given the high prevalence of screen viewing among children worldwide, its impact on children's health has become a cause for concern. Unfortunately, little information on the independent association be...
Article
Full-text available
The primary objective of this study was to establish sex‐ and age‐specific physical fitness percentiles for French children. The secondary aim was to assess sex, weight status and age differences for physical fitness levels in French children. A sample of 31,484 children (16,023 boys, 15,461 girls) aged 6–11 years participated in the Diagnoform pro...
Article
Full-text available
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
Background It has been shown that meteorological conditions and season affect physical activity (PA) during adolescence. Today, meteorological conditions have never been combined to study their influence on PA level in a single sample of a large adolescent multicountries population. The aim of this study was to explore the influence of meteorologic...
Article
Background: We compared differences in physical activity (PA) between pre/mid-pubertal and post-pubertal participants according to gender. Methods: The study included a total of 1842 healthy participants aged 12.5-17.4 years, who participated in the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) study. Participants wore a uniax...
Article
Background & aims: Bone health is an important concern in patients with inflammatory bowel disease (IBD). Low bone mineral density (BMD) is a powerful predictor of fracture risk in IBD patients. Physical activity (PA) plays an important role in bone health. However, PA data for children and adolescents with IBD are scarce. The primary aim is to ev...
Article
Full-text available
Background Accelerometers are widely used to measure sedentary time and daily physical activity (PA). However, data collection and processing criteria, such as non-wear time rules might affect the assessment of total PA and sedentary time and the associations with health variables. The study aimed to investigate whether the choice of different non-...
Article
Physical activity is an important determinant of health in children and adults. Assessment of physical activity is therefore an important factor in the promotion of health and in several childhood and adulthood pathological situations. Physical activity can be estimated by various methods: pedometry, heart rate monitoring, questionnaires, the doubl...
Article
Objectives: To determine whether handgrip strength (HG) and/or standing long jump (SLJ) are capable of detecting risk of metabolic syndrome (MetS) in European adolescents, and to identify age- and sex-specific cut points for these tests. Design: Cross-sectional study. Methods: Participants included 969 (aged 12.5-17.5 years old) adolescents fr...
Article
Full-text available
Purpose This study aims to compare adolescents’ cardiometabolic risk score through an integrative classification of physical activity (PA), which involves the combination of moderate-to-vigorous physical activity (MVPA) and sedentary behavior (SB). Methods A cross-sectional study derived from the Healthy Lifestyle in Europe by Nutrition in Adolesc...
Article
Background: Insufficient levels of physical activity and increasing sedentary time among children and youth are being observed internationally. The purpose of this paper is to summarize findings from France's 2018 Report Card on physical activity for children and youth, and to make comparisons with its 2016 predecessor and with the Report Cards of...
Article
Introduction et but de l’étude Le Nord-Pas de Calais est fortement touché par les maladies inflammatoires chroniques intestinales (MICI), avec une augmentation importante de son incidence chez l’enfant et l’adolescent au cours de ces 20 dernières années (Ghione et al., 2017). Les MICI chez l’enfant retentissent sur la densité minérale osseuse (DMO)...
Article
Objective To examine the associations between adolescents’ diet quality and their perceived relatives’ and peers’ diet engagement and encouragement. Design Cross-sectional study performed in European countries. Diet quality was scored using the Diet Quality Index for Adolescents (DQI-A) based on four components: quality, diversity, balance and mea...
Article
Conclusion: Adolescents from the south of Europe had higher levels of attention capacity than their counterparts from central Europe independently of sociodemographic and health-related factors. These differences should be taken into account by educational institutions when promoting new approaches for putting into the practice student's capacitie...
Article
Full-text available
Background This study aimed to investigate whether awareness of being monitored by an accelerometer has an effect on physical activity in young people. Methods Eighty healthy participants aged 10–18 years were randomized between blinded and nonblinded groups. The blinded participants were informed that we were testing the reliability of a new devi...
Article
Adolescence represents an important period for the development of executive functions, which are a set of important cognitive processes including attentional control. However, very little is known regarding the associations of nutrition with components of executive functions in adolescence. Thus, the aim of this study was to investigate association...
Article
Full-text available
The aim was to investigate whether there was an association between amino acid (AA) intake and physical fitness and if so, to assess whether this association was independent of carbohydrates intake. European adolescents (n = 1481, 12.5–17.5 years) were measured. Intake was assessed via two non-consecutive 24-h dietary recalls. Lower and upper limbs...
Article
The aim of this study was to assess physical activity (PA) awareness of adolescents and to identify anthropometric and psychosocial factors that can lead to under or overestimation of PA. This study included 2044 adolescents. Participants wore a uniaxial accelerometer for 7 days to measure PA and completed a self-rated questionnaire about PA. Adole...
Article
Purpose: Childhood obesity is one of the major concerns in the last years due to the association with future health problems and all-cause mortality. However, there is a subset of adolescents with overweight/obesity who present a metabolic healthy profile. Therefore, the aim of this study was to examine the prevalence of metabolically healthy but...
Article
Objective To determine the prevalence of underweight, overweight and obesity in French youth from 2009 to 2013 and to determine if there are differences in weight categories according to socio-economic status. Design Cross-sectional study performed in different regions of France. Physical measures included weight, height and BMI. Underweight, over...
Article
Background & aims: The aim of this study was to assess the diet quality awareness and associated factors in a large sample of European adolescents. Methods: The study included 3389 healthy adolescents, aged 12.5-17.5 years, who participated in the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) Study. The adolescents' diet quali...
Article
Full-text available
The aim of this study was to establish gender- and age-specific physical fitness percentiles in French youth. A sample of 11 186 children and adolescents (5 546 boys, 5 640 girls), ages 10-15 years, was assessed in the French national BOUGE study. Participants were tested on cardiorespiratory fitness, muscular endurance, speed, flexibility and agil...
Article
The aim was to assess the relationship between school rhythm and physical activity (PA) in adolescents. The study included 2024 adolescents (12.5-17.4 years). Participants wore an accelerometer for 7 days. A short school rhythm was defined as a short time at school with short recesses and less time in teaching per day (Group 1). A long school rhyth...
Article
BACKGROUND: A high level of physical fitness is associated with cardiovascular health in adolescents. The aims of this study were to assess the levels of physical fitness of French adolescents and to determine the prevalence of these adolescents below the minimum level of cardiorespiratory fitness needed to guarantee future favorable cardiovascula...
Article
Objectives: To examine the association of health-related physical fitness components and accurate measures of fatness with attention in European adolescents. Design: Cross-sectional study. Methods: A sub-sample of 444 adolescents from the HELENA study (14.5±1.2years) from 6 different countries participated in this study. Adolescents underwent...
Article
BACKGROUND A high level of physical fitness is associated with cardiovascular health in adolescents. The aims of this study were to assess the levels of physical fitness of French adolescents and to determine the prevalence of these adolescents below the minimum level of cardiorespiratory fitness needed to guarantee future favorable cardiovascular...
Article
Full-text available
HELENA was a cross-sectional study carried out from 2006 to 2007 in more than 3500 adolescents aged from 12.5 to 17.5 years old through 10 Europeans towns from 9 countries. Its objective was to assess adolescent nutritional status including: body composition, biological markers, physical activity and fitness. This study shown the high impact of soc...
Article
Introduction et but de l’étude L’adolescence est une période habituellement marquée par une baisse de l’activité physique. Alors que les adolescents consacrent une part importante de leur temps à l’école, il n’est aujourd’hui pas connu comment l’organisation du temps scolaire influence l’activité physique. Le but de notre étude était d’évaluer la r...
Article
Introduction et but de l’etude L’activite physique est un determinant important de la sante chez l’enfant et l’adolescent. La cognition integre memoire, vitesse de reaction, attention et concentration, ces 2 derniers etant particulierement important chez l’enfant car indispensables aux processus de comprehension et d’apprentissage. Plusieurs etudes...
Article
But de l’étude Le but de notre étude était d’évaluer la relation entre les rythmes scolaires et les profils d’activité physique (AP) des adolescents européens. Méthodes L’étude comprenait 2014 adolescents âgés de 12,5 à 17,5 ans, ayant participé à l’étude HELENA (http://www.helenastudy.com). Les données ont été recueillies dans 7 pays européens (F...
Article
Full-text available
The purpose of this study was to determine whether there is a difference in physical activity assessment between a wrist-worn accelerometer at the dominant or non-dominant arm. The secondary purpose was to assess the concurrent validity of measures of physical activity from the wrist-worn accelerometer and the waist-worn accelerometer. Forty adults...
Article
Objective: To assess the relationships among physical activity, measured objectively, and attention capacity in European adolescents. Study design: The study included 273 adolescents, aged 12.5-17.5 years, who participated in the Healthy Lifestyle in Europe by Nutrition in Adolescence Study. Participants wore a uniaxial accelerometer for 7 days...
Article
The aim was to assess physical fitness in French schoolchildren in the region of Ile de France and to compare the results with European countries. The relationship between physical fitness and future health profile was of particular interest. Participants were 1851 French youth in the Ile de France region. Cardiorespiratory fitness, muscular endura...
Article
Full-text available
Physical Fitness Levels of Adolescents in the Île-de-France region: Comparison with European Standards and Relevance for Future Cardiovascular Risk Background: Physical fitness is an important determinant of health in children and adolescents. The main objective of our study was to assess physical fitness by gender in French schoolchildren in the Î...
Article
Nutritional status, an important measure in health promotion and certain childhood and adolescent pathologies, includes anthropometric, diet and physical activity evaluation. Choosing the best assessment of nutritional status for your research must consider objectives of clinician, study design, number of subjects, frequency of measurement, and cos...
Article
Background/Objective: Increased physical activity (PA) and decreased sedentary behaviors (SB) may have beneficial effects on cardio-metabolic risk in adolescents. The aim of this study was to examine the associations between independent/combined effects of PA and SB with individual/clustered cardio-metabolic risk factors. Methods: A sample of 769 a...