Marie-Eve Mathieu

Université de Montréal - Sainte-Justine University Hospital Center · School of Kinesiology and Physical Activity Sciences - Metabolic Health

Introduction: People living with T1D are disproportionally more affected by CVD than the general population. As emerging evidence points to direct effects of diet on vascular function and cardiac structure, dietary interventions may be effective strategies to mitigate CVD risk early on. Hypothesis: We tested the hypothesis that specific dietary com...

Purpose To estimate the shape and number of mechanical efficiency (ME) trajectories from childhood to adolescence; and verify whether ME trajectory membership can be predicted by sex, biological maturation, body weight, body composition and physical activity (PA) in childhood. Methods Data from QUALITY, an ongoing cohort study on the natural histo...

Background Uncertainty remains regarding the causal effect of physical activity and sedentary behaviours on the development of type 2 diabetes in children. We aimed to estimate average treatment effects of physical activity and sedentary behaviours on risk of type 2 diabetes in individuals who are at risk during childhood and adolescence. Methods...

Fewer and fewer people are reaching physical activity recommendations. Therefore, it seems important to make the practice of physical activity more enjoyable to increase the participation rate. Several environmental factors have been studied to see their impact on sports practice, and some studies investigated the effect of odors. This systematic r...

Introduction Exercise tends to reduce subsequent meal intake, but mechanisms are still unclear. Interestingly, exercise seems to influence taste, which plays a role in energy intake. The effect of exercise on specific tastes is still to be elucidated, especially among younger participants who train at high intensity. Methods Adolescents (14-16 year...

Olfactory acuity, which includes detection thresholds, identification and appreciation/intensity, seems to decline with aging, obesity, and various neurological disorders. Knowing that the sense of smell influences energy intake, the interest in protecting this sense is constantly increasing. Physical activity might be a key intervention to counter...

Background: Body image variables such as body size perception (BSP) and body size dissatisfaction (BSD) can influence health-related behaviors. However, few studies have investigated these body image variables in adolescent girls participating in a physical activity intervention. Therefore, the study objectives were to examine the 1) associations...

Background We compared the relation between neighborhood features and moderate to vigorous physical activity (MVPA) using linear regression analysis and the more novel compositional data analysis (CoDA). Compositional data analysis allows us to take the time children allocate to different movement behaviours during a 24-hour time period into accoun...

Background: Body image variables such as body size perception (BSP) and body size dissatisfaction (BSD) can influence health-related behaviors. However, few studies have investigated these body image variables in adolescent girls participating in a physical activity intervention. Therefore, the study objectives were to examine the 1) associations b...

The workplace has been suggested as a good setting for the promotion of healthy lifestyles. This article examines the impact of Activate Your Health programme, provided over an average of 1.35 years, on employee health and lifestyle habits (actual and intention to improve). Companies selected one of the programme's four options (number of intervent...

A growing number of studies have used virtual reality (VR) for the assessment and treatment of body image disturbances (BIDs). This study, conducted in a community sample of adolescents, documents the convergent and discriminant validity between (a) the traditional paper-based Figure Rating Scale (paper-based FRS), (b) the VR-based Body Rating Scal...

Background: The baseline characteristics of employees to predict improvements in healthy lifestyle habits (LHs) following workplace health promotion programs are underexplored. This study sought to identify predictors of improvements in physical activity (PA), eating habits, sleep habits, and stress management, and health risk factors resulting fr...

Background In children, the mechanisms implicated in deterioration of glucose homeostasis vs. reversion to normal glucose tolerance (NGT) remain uncertain. Objective Describe the natural history of dysglycemia from childhood to late adolescence and to identify its early determinants. Methods We used baseline (8-10 yrs, n=630), 1st follow-up (10-1...

Introduction: Considering the contribution of the autonomic nervous system (ANS) in regulating both energy expenditure and energy intake, assessment of heart rate variability (HRV) may elucidate the etiology and adaptive processes in the development of obesity. Variations in the cardiac ANS are associated with changes in energy balance and eating b...

Introduction: Adequate glycemic control can prevent or delay complications of diabetes. Little is known about the role of glycemic control trajectories on early markers of CVD in youth. Hypothesis: Poor glycemic control trajectory will be associated with increased vascular ageing and altered myocardial structure. Methods: Cross-sectional study of 1...

Background: Modifiable determinants of cardiovascular disease (CVD) remain largely understudied in pediatric type 1 diabetes (T1D). We estimated associations of physical activity and sedentary behavior with markers of CVD in adolescents and tested whether associations differed based on T1D status. Methods: Cross-sectional study of 100 adolescents...

Background: Few studies have examined who positively responds to programs promoting healthy lifestyle habits (LHs) at work. More precisely, baseline characteristics that predict LH improvements need to be studied to improve the effectiveness of the program. Purpose: To identify predictors of improvement in LHs [physical activity (PA), eating habit...

Introduction Taste is a key sensory modulator of eating behaviour and thus energy intake. The effects of acute exercise has recently been confirmed especially regarding sweet and salty tastes. Physical activity is a safe and effective countermeasure to certain types of chemosensory losses, especially in older populations. Knowing that taste can be...

Introduction Little is known regarding associations between potentially modifiable lifestyle habits and early markers of cardiovascular disease (CVD) in pediatric type 1 diabetes (T1D), hindering early prevention efforts. Specific objectives are: (1) compare established risk factors (dyslipidemia, hypertension) with novel early markers for CVD (car...

There are few known determinants of sedentary behaviour (SB) in children. We generated and compared profiles associated with risk of excess SB among children (n=294) both at 8-10 and 10-12 years of age (Visits 1 and 2, respectively), using data from the QUebec Adipose and Lifestyle InvesTigation in Youth. Excess SB was measured by accelerometry and...

Objectives: To explore employees' intentions to improve lifestyle habits, investigate the health and lifestyle-related predictors of these intentions, and how it translated into behavioral improvement. Methods: Employees participating in the Activate Your Health WHPP completed a questionnaire of their demographics, health-related variables, as w...

Background and Objective: Causal inference methods were developed to emulate repeated randomized trials in observational studies, notably by controlling for time-varying confounders. Using these methods, we examined the complex relationship between physical activity, sedentary behaviors and T2DM accounting for interrelations between time-varying li...

Background: Behavioral trajectories from childhood to adolescence may differ and are poorly understood. The authors estimated the trajectories of moderate to vigorous physical activity (MVPA), screen time, and sleep duration during this period, by sex and initial weight status. Methods: Data from Quebec Adiposity and Lifestyle Investigation in Y...

Contexte : L'excès de temps sédentaire a des effets néfastes sur la santé. Afin de contrer la sédentarité au travail, l'installation de postes de travail debout avec pédalier et sur tapis roulant, appelés postes actifs, a été proposée. Une méta-analyse démontre que la recherche s'est concentrée sur le poste debout, et ce avec une réduction du temps...

Contexte : Environ 14 % des employés qui prennent part à un programme de promotion des saines habitudes de vie en milieu de travail (PPST) démontrent une amélioration de leurs comportements. Certaines théories postulent que l’intention serait associée à ce changement de comportement. Objectifs : 1) Examiner les intentions des employés prenant part...

Introduction Attrition in pediatric weight management programs is notoriously high. Greater understanding of its determinants is needed to inform retention strategies. We identified determinants of attrition in CIRCUIT, a healthy lifestyle intervention program for youth at risk of cardiovascular disease. Methods A one-arm intervention study of chi...

Background Worldwide, most adolescent girls do not meet physical activity (PA) recommendations and very few PA programs are tailored specifically towards them. Even fewer information exists about the long-term effects of such programs. Some Canadian schools have implemented the FitSpirit PA intervention designed specifically for girls aged 12 to 17...

This study aims to determine the proportion of girls who meet the recommendations for moderate-to-vigorous physical activity (MVPA), screen time and sleep duration among FitSpirit participants and evaluate the associations of these recommendations with perceived health-related quality of life (QOL), perceived health, physical activity (PA), self-ef...

More than 50% of Canadian workers live with at least one chronic disease, most of which can be prevented by adopting healthy lifestyle habits. This quasi-experimental study examined the impact of one implementation cycle of a workplace healthy lifestyle promotion program called Activate Your Health on outcomes related to employees’ health and lifes...

The main aim was to verify in a group of adolescent girls undergoing a school-based intervention if the number of years of participation in the intervention is related to healthy lifestyle habits, body weight status, and perceived health. Cross-sectional analysis of the FitSpirit data was performed. Body mass index, lifestyle variables, and perceiv...

Background: Sedentariness has been shown to increase energy intake and is associated with increased obesity prevalence. Active workstations are used to implement physical activity interventions in workplaces, but it is unclear if they can lead to reductions in body weight. This study aims to observe the acute impact of a standing desk on energy in...

The effect of physical exercise on nutrition has gained substantial interest in the last decade. Meaningful results have been produced concerning the effect of physical exercise on different appetite hormones and food choice/preference. While it is well known that taste and nutrition are related, the relation between taste and physical activity has...

Background: The 24-hour movement guidelines provide recommendations for physical activity, screen time and sleep duration for children. Objectives: Describe adherence to the guidelines and their cross-sectional and longitudinal associations with adiposity from childhood to adolescence. Methods: Data are from the QUALITY Cohort. Children were f...

Background and aims This study explored if lifestyle habits [physical activity (PA), sleep duration, intake of fruits and vegetables, grains, and dairy products] can moderate the positive associations between prenatal exposure to suboptimal gestational factors (SGF: i.e. gestational diabetes mellitus, hypertensive disorders during pregnancy, matern...

Background The aim of this study was to explore the relationship between ambulatory distance with steps/day and increased step length as children age Methods This is a prospective cohort study. Forty-five children from the QUALITY cohort were assessed at childhood (baseline) and seven years later during adolescence (follow-up). Daily step count wa...

The satiating efficiency of food has been increasingly quantified using the Satiety Quotient (SQ). The SQ integrates both the energy content of food ingested during a meal and the associated change in appetite sensations. This systematic review examines the available evidence regarding its methodological use and clinical utility. A literature searc...

Objective: To explore the association between in utero exposure to suboptimal gestational factors (SGF:gestational diabetes mellitus, hypertensive disorders during pregnancy, maternal smoking during pregnancy), childhood obesity, and cardiometabolic risk factors. Methods: Data were obtained from the quebec adiposity and lifestyle investigation in y...

Adolescence is a crucial time in the development and maintenance of lifestyle habits. Interventions to improve health-related behaviors are important, including those that can contribute to an increase in physical activity (PA). During adolescence, PA typically decreases with age, particularly in girls. The FitSpirit program offers services that he...

While the satiety quotient (SQ) is increasingly used in pediatric populations, the present study assessed its reliability and reproducibility in adolescents with obesity. Sixty-eight adolescents with obesity were enrolled. Anthropometric measurements and body composition (DXA) were assessed. They randomly completed two experimental sessions: (i) co...

Introduction: Most adolescents do not meet physical activity (PA) recommendations, especially girls. Physical inactivity has major physical and psychosocial deleterious effects on adolescents. Little is known about the effect of girl-only, extra-curricular PA programs designed for adolescents on physical and psychosocial outcomes. Hence, this syste...

To identify determinants for the development of “normal weight metabolically unhealthy” (NWMU) profiles among previously metabolically healthy normal weight children. The QUALITY cohort comprises youth 8–10 years of age with a parental history of obesity (n = 630). Of these, normal weight children with no metabolic risk factors were identified and...

[Purpose] While there is a need for reliable field tests for the evaluation of physical fitness in pediatric obesity, the present work i) evaluates the validity of the Spartacus 15-15 test in indirectly assessing maximal aerobic capacity in adolescents with obesity and ii) evaluates its sensibility to weight loss. [Participants and Methods] Fifty-f...

Background and aim Exercise timing has been suggested to affect appetite and energy intake (EI). The aim of this study was to examine the impact of exercising immediately before or after a meal on EI, appetite sensations and food reward (FR) in adolescents with obesity. Methods and results Seventeen adolescents with obesity completed 3 experimenta...

Introduction et but de l’étude Alors que le rôle des voies homéostatiques et neurocognitives impliquées dans les réponses nutritionnelles à l’exercice a été identifié en fonction de l’intensité, modalité ou encore durée de l’exercice [1] (Thivel, 2018) ; seuls Albert et al. (2015) [2] ont questionné le rôle du délai entre l’exercice et le repas sur...

Physical activity is beneficial to lipid profiles; however, the association between sedentary behavior and sleep and pediatric dyslipidemia remains unclear. We aimed to investigate whether sedentary behavior or sleep predicted lipid profiles in children over a 2-year period. Six hundered and thirty children from the QUALITY cohort, with at least on...

Background: High-intensity exercise can have an anorectic impact, leading to negative energy balance. Several studies have reported that the practice of physical activity could also cause a shift in perceptions and preferences, causing a change in food intakes. Objective: This study aimed to question to what extent the timing of exercise in rela...

Dans les dernières années, les programmes de promotion de la santé ou de saines habitudes de vie sont devenus une option fort intéressante à la fois pour les employés et les employeurs. À cet effet, les membres du Comité scientifique de Kino-Québec ont récemment diffusé un document visant à sensibiliser la population sur l’importance de la pratique...

Dans les dernières années, les programmes de promotion de la santé ou de saines habitudes de vie sont devenus une option fort intéressante à la fois pour les employés et les employeurs. À cet effet, les membres du Comité scientifique de Kino-Québec ont récemment diffusé un document visant à sensibiliser la population sur l’importance de la pratique...

Objectives: As time with patients and resources are increasingly limited, it is important to determine if clinical tests can provide further insight into real-world behaviors linked to clinical outcomes. The purpose of this study was to determine which aspects of anthropometry and physical fitness testing are associated with physical activity (PA)...

The prevention and management of chronic diseases, particularly overweight and obesity, relies on multidisciplinary strategies mainly combining dietary approaches with physical activity. Recently, the timing of exercise (time of the day as well as delay/position relative to a meal) has been suggested as an important parameter to consider when presc...

Objective The goal of this study was to determine if using a standing desk would affect the productivity of workers, based on the type of work they perform. Background Standing desks are a promising new health intervention in the workplace, but users and employers often require more specific recommendations related to productivity, such as the typ...

To compare the effect of iso-caloric low and high intensity exercises on Satiety Quotient and Food Reward in response to a fixed meal in healthy young adults. Anthropometric measurements, body composition (BIA), aerobic capacity (VO2 max) and food preferences were assessed in 19 healthy normal-weight young adults (21 ± 0.5 years old, 10 men). They...

The present study manipulated the delay between exercise and test meal to investigate its effect on energy intake, appetite sensations and food reward in adolescents with obesity. Fifteen adolescents with obesity randomly completed 3 experimental sessions: i) rest without exercise (CON); ii) 30 min of exercise 180 min before lunch (EX-180); iii) 30...

Introduction: More than two thirds of survivors have long-term adverse effects, and no study proposes a portrait of physical activity level in childhood acute lymphoblastic leukemia survivors. The aims of this study were to present the cardiorespiratory fitness (CRF) levels of survivors detailed overview sedentary activities portrait. Methods: A...

Background: Workplace Health Promotion Programs (WHPP) have been shown to be an efficient way of improving workers’ health. These programs can be incorporated in the worker’s daily schedule and improve their productivity at work. Improving employees’ health also benefits the employers by increasing their return on investment and lowering healthcare...

The sensory profile, referring to sight, smell, taste, hearing, and touch, plays an essential role in optimizing the habitual intake of energy and macronutrients. However, specific populations, such as older adults, are known to have impaired energy intake. In this paper, the relevance of sensory impairments in this older population is described, a...

An active lifestyle is necessary for optimal health. However, girls become less active from childhood through adolescence. Objective: To explore the relationship between the number of years of participation in the FitSpirit intervention with body mass index (BMI), moderate-to-vigorous physical activity (MVPA), sedentary time (SED), sleep duration a...

Contexte : Le niveau d'activité physique diminue avec l'âge. Le nombre de pas par jour est largement utilisé pour estimer le volume total des activités ambulatoires et pour déterminer les recommandations visant à réduire le risque de maladies cardiovasculaires. Objectif : Analyser si et dans quelle mesure le changement de la distance parcourue avec...

Currently, exercise prescription relies heavily on parameters included in the FITT principle: frequency, intensity, time (duration), and type of exercise. In this paper, the benefits of including timing (FITT+T), referring to when exercise is performed in relation to meal-time, is discussed. Current research indicates that timing is outcome-specifi...

Exercise can acutely suppress appetite, but the impact of exercise timing on anthropometry remains unknown. This study explored whether exercise timing relative to meal-time can optimize bodyweight and adiposity losses in overweight and obese adults. This randomized crossover design compared exercise one-hour preceding meal-time (ExMeal) and exerci...

Discipline Clinique. Introduction et but de l’étude L’évaluation des sensations d’appétit est une méthode précise pour mesurer la motivation à manger avant et en réponse à un repas (Flint et al., 2000). L’évolution de ces sensations d’appétit en réponse à une prise énergétique permet aussi de renseigner la capacité satiétogène de cette dernière, à...

Objectif : L’objectif de cette étude est de vérifier la différence dans le niveau d’activité physique (AP), le temps sédentaire (TS), le sommeil et la santé perçue des participantes à Fillactive selon l’âge, le statut pondéral ainsi que le nombre d’années de participation au programme. Méthode : L'approche Fillactive vise à promouvoir l’AP en milie...

In order to reduce sedentary behaviour at work, research has examined the effectiveness of active workstations. However, despite their relevance in replacing conventional desks, the comparison between types of active workstations and their respective benefits remains unclear. The purpose of this review article is thus to compare the benefits betwee...

The authors examined the effects of a 12-week pole walking program on function and well-being in 123 older adults aged 60 years and older, recruited by community organizations. The results showed a significant improvement in the participants’ upper and lower limb strength in the experimental groups compared with those in the control groups ( p < .0...

The aim of this article is to introduce an open-source software—Turtle Sport—that is capable of automatically importing the GPS traces of several types of GPS sport watches (Garmin, Polar, Suunto, Timex, TomTom, etc.) or of importing a number of GPS files. The GPS data are also uploaded locally to the researcher’s computer workstation, and not to C...

Applied Physiology, Nutrition, and Metabolism, 2019, 44(4 (Suppl. 1)): S1-S54, https://doi.org/10.1139/apnm-2019-0152

Objective: This systematic review aims to collect existing literature and summarize the impact of active workstations on the health and work outcomes of participants with overweight or obesity. Methods: Five databases were examined (until March 2018), and the keywords “desk,” “workstation,” “work station,” and “work stations” were used with any one...

Physical activity (PA) is a part of a healthy pregnancy. To date, no consumer-based activity monitors have been validated with this population. The aim of this study was to validate the Fitbit Zip and Fitbit Flex monitors in free-living conditions with pregnant women using the ActiGraph GT3X as the ?gold standard?. We compared the accuracy of the F...