A conative educational model for an intervention program in obese youth

Background Obesity in children has increased in recent years throughout the world and is associated with adverse health consequences. Early interventions, including appropriate pedagogy strategies, are important for a successful intervention program. The aim of this study was to assess changes in body mass index, the ability to perform sport activities, behavior in the classroom and academic performance following one year of a health-wellness intervention program in obese youth. Methods The CEMHaVi program included 37 obese children (19 girls and 18 boys). Participants received an intervention program consisting of physical activity and health education. Assessment included body mass index, academic performance, classroom performance and ability to perform sport activities. Paired t tests were used to assess the effects of intervention, and chi square was used to assess inter-action between measures. Results Findings of the study suggest significant decrease in Z scores of Body Mass Index and an improvement of academic performance, classroom behavior and the ability to perform sport activities (p \u3c 0.05). Chi square testing showed significant positive inter-actions between body mass index, classroom behavior and academic performance. Conclusions Results following year one of CEMHaVi showed that a program of physical activity and health education had positive effects on obesity, behavior in the classroom and the ability to perform sport activities in obese adolescents. Significant inter-action in changes between variables was observed. Findings are important for designing intervention models to improve health in obese youth

Comparison of two ActiGraph accelerometer generations in the assessment of physical activity in free living conditions.

International audienceUNLABELLED: ABSTRACT: BACKGROUND: The aim of this study was to compare physical activity measured using GT1M ActiGraph and GT3X ActiGraph accelerometers in free living conditions. FINDINGS: Twenty-five adults wore GT1M and GT3X Actigraph accelerometers simultaneously during a typical weekday of activity. Data were uploaded from the monitor to a computer at the end of test (one day). Previously established thresholds were used for defining time spent at each level of physical activity, physical activity was assessed at varying intensities comparing data from the two accelerometers by ANOVA and Bland and Altman statistical analysis. The concordance correlation coefficient between accelerometers at each intensity level was 0.99. There were no significant differences between accelerometers at any of the activity levels. Differences between data obtained in minutes with the GT1M accelerometer and the GT3X monitor were to 0.56, 0.36, 0.52 and 0.44% for sedentary, light, moderate and vigorous, respectively. The Bland and Altman method showed good agreement between data obtained for the two accelerometers. CONCLUSIONS: Findings suggest that the two accelerometers provided similar results and therefore the GT3X may be used in clinical and epidemiological studies without additional calibration or validation studies

Validation of the Vivago Wrist-Worn accelerometer in the assessment of physical activity

BACKGROUND: Most accelerometers are worn around the waist (hip or lower back) to assess habitual physical activity. Wrist-worn accelerometers may be an alternative to the waist-worn monitors and may improve compliance in studies with prolonged wear. The aim of this study was to validate the Vivago® Wrist-Worn Accelerometer at various intensities of physical activity (PA) in adults. METHODS: Twenty-one healthy adults aged 20–34 years were recruited for the study. Accelerometer data and oxygen uptake (VO(2)) were measured at sedentary, light, moderate and vigorous levels of PA. RESULTS: Activity categories and accelerometer counts were: sedentary, 0–15 counts·min(−1); light, 16–40 counts·min(−1); moderate, 41–85 counts·min(−1); and vigorous activity, >; 85 counts·min(−1). ANOVA repeated measures was used to determine the relationship between accelerometry data output and oxygen consumption (r = .89; p <; .001). The Bland and Altman method showed good agreement in the assessment of energy expenditure between the indirect calorimetry and the data obtained by the accelerometer. CONCLUSIONS: Results of the study suggest that the Vivago® wrist-worn accelerometer is a valid measure of PA at varying levels of intensity. The study has also defined threshold values at 4 intensities and hence te Vivago® accelerometer may be used to quantify PA in free living conditions among adults. This device has possible application in treating a variety of important health concerns

Comparison of uniaxial and triaxial accelerometry in the assessment of physical activity among adolescents under free-living conditions: the HELENA study

<p>Abstract</p> <p>Background</p> <p>Different types of devices are available and the choice about which to use depends on various factors: cost, physical characteristics, performance, and the validity and intra- and interinstrument reliability. Given the large number of studies that have used uniaxial or triaxial devices, it is of interest to know whether the different devices give similar information about PA levels and patterns. The aim of this study was to compare physical activity (PA) levels and patterns obtained simultaneously by triaxial accelerometry and uniaxial accelerometry in adolescents in free-living conditions.</p> <p>Methods</p> <p>Sixty-two participants, aged 13-16 years, were recruited in this ancillary study, which is a part of the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA). All participants wore a uniaxial accelerometer (ActiGraph GT1M^®, Pensacola, FL) and a triaxial accelerometer (RT3^®, Stayhealthy, Monrovia, CA) simultaneously for 7 days. The patterns were calculated by converting accelerometer data output as a percentage of time spent at sedentary, light, moderate, and vigorous PA per day. Analysis of output data from the two accelerometers were assessed by two different tests: Equivalence Test and Bland & Altman method.</p> <p>Results</p> <p>The concordance correlation coefficient between the data from the triaxial accelerometer and uniaxial accelerometer at each intensity level was superior to 0.95. The ANOVA test showed a significant difference for the first three lower intensities while no significant difference was found for vigorous intensity. The difference between data obtained with the triaxial accelerometer and the uniaxial monitor never exceeded 2.1% and decreased as PA level increased. The Bland & Altman method showed good agreement between data obtained between the both accelerometers (<it>p </it>< 0.05).</p> <p>Conclusions</p> <p>Uniaxial and triaxial accelerometers do not differ in their measurement of PA in population studies, and either could be used in such studies.</p

Changes in physical activity patterns from adolescence to young adulthood: the BELINDA study

Physical activity (PA) is recognized as a marker of health. The aim was to investigate PA differences from adolescence to young adulthood. European adolescents included in the HELENA study were invited to participate in a follow-up study, 10 years later. The present study included 141 adults (25.0 ± 1.4 years) for whom valid accelerometer data were available in adolescence and adulthood. Changes in PA by sex, weight and maternal education level were explored with interactions. Time spent in sedentary activity, light PA (LPA) and moderate PA (MPA) increased by 39.1, 59.6 and 6.6 min/day, respectively, whereas the time spent in vigorous PA (VPA) decreased by 11.3 min/day compared with adolescent VPA (p < 0.05). Increases in MPA were greater on weekends compared with weekdays, but we found a greater decrease in VPA on weekdays compared with weekends. Moderate-to-vigorous PA (MVPA) decreased significantly on weekdays (–9.6 min/day; 95%CI, –15.9 to –3.4), while it increased on weekends (8.4 min/day; 95%CI, 1.9 to 14.8). Significant heterogeneity was found across sexes for VPA and MVPA, with a stronger decrease in VPA in males compared with females and a significant decrease in MVPA (–12.5 min/day; 95%CI, –20.4 to –4.5) in males but not in females (1.9 min/day; 95%CI, –5.5 to 9.2). No significant heterogeneity was found to be linked to maternal education level or weight, irrespective of PA level. Conclusion: Our data suggest that the transition from adolescence to young adulthood is a critical period for lifestyle PA habits. A decline in VPA and an increasingly sedentary time were observed. The observed changes are worrying and may increase the risk of developing adverse health consequences later in life

European fitness landscape for children and adolescents: updated reference values, fitness maps and country rankings based on nearly 8 million test results from 34 countries gathered by the FitBack network

Objectives (1) To develop reference values for health-related fitness in European children and adolescents aged 6–18 years that are the foundation for the web-based, open-access and multilanguage fitness platform (FitBack); (2) to provide comparisons across European countries. Methods This study builds on a previous large fitness reference study in European youth by (1) widening the age demographic, (2) identifying the most recent and representative country-level data and (3) including national data from existing fitness surveillance and monitoring systems. We used the Assessing Levels of PHysical Activity and fitness at population level (ALPHA) test battery as it comprises tests with the highest test–retest reliability, criterion/construct validity and health-related predictive validity: the 20 m shuttle run (cardiorespiratory fitness); handgrip strength and standing long jump (muscular strength); and body height, body mass, body mass index and waist circumference (anthropometry). Percentile values were obtained using the generalised additive models for location, scale and shape method. Results A total of 7 966 693 test results from 34 countries (106 datasets) were used to develop sex-specific and age-specific percentile values. In addition, country-level rankings based on mean percentiles are provided for each fitness test, as well as an overall fitness ranking. Finally, an interactive fitness platform, including individual and group reporting and European fitness maps, is provided and freely available online (www.fitbackeurope.eu). Conclusion This study discusses the major implications of fitness assessment in youth from health, educational and sport perspectives, and how the FitBack reference values and interactive web-based platform contribute to it. Fitness testing can be conducted in school and/or sport settings, and the interpreted results be integrated in the healthcare systems across Europe

European fitness landscape for children and adolescents: updated reference values, fitness maps and country rankings based on nearly 8 million test results from 34 countries gathered by the FitBack network

Objectives (1) To develop reference values for health-related fitness in European children and adolescents aged 6–18 years that are the foundation for the web-based, open-access and multilanguage fitness platform (FitBack); (2) to provide comparisons across European countries. Methods This study builds on a previous large fitness reference study in European youth by (1) widening the age demographic, (2) identifying the most recent and representative country-level data and (3) including national data from existing fitness surveillance and monitoring systems. We used the Assessing Levels of Physical Activity and fitness at population level (ALPHA) test battery as it comprises tests with the highest test–retest reliability, criterion/construct validity and health-related predictive validity: the 20 m shuttle run (cardiorespiratory fitness); handgrip strength and standing long jump (muscular strength); and body height, body mass, body mass index and waist circumference (anthropometry). Percentile values were obtained using the generalised additive models for location, scale and shape method. Results A total of 7 966 693 test results from 34 countries (106 datasets) were used to develop sex-specific and age-specific percentile values. In addition, country-level rankings based on mean percentiles are provided for each fitness test, as well as an overall fitness ranking. Finally, an interactive fitness platform, including individual and group reporting and European fitness maps, is provided and freely available online (www.fitbackeurope.eu)

Le programme CEMHaVi chez des enfants en surcharge pondérale (affinement de l'accélérométrie comme outil d'évaluation des habitudes de vie physique et suivi longitudinal de deux années d'une prise en charge pluridisciplinaire)

L objectif de ce travail de thèse était de développer et d évaluer un programme pluridisciplinaire de réentraînement à l effort chez des enfants en surcharge pondérale. Ce programme, appelé CEMHaVi (Contrôle, Evaluation, Modification d un Habitus de Vie), associe activité physique adaptée et éducation à la santé. Pour cela, des étapes préliminaires de vérification et de mise au point des outils de mesure de l AP ont été nécessaires en particulier pour l accélérométrie. Une première recherche a démontré l équivalence des données obtenues entre le tapis roulant et les conditions réelles sur terrain plat par l accéléromètre RT3®. Une seconde étude a permis de déterminer et valider sur tapis roulant des bornes minimales et maximales de l accéléromètre RT3® pour détecter différents niveaux d activité physique : sédentaire, léger, modéré et vigoureux. Le programme de réentrainement à l effort et d éducation à la santé a, dans un deuxième temps, concerné 37 enfants et adolescents (37 ont été suivis sur 1 an, et 7 sur 2 ans). Une diminution de l IMC a été observée, avec une amélioration des performances scolaires, de l estime de soi, des caractéristiques du sommeil, des connaissances en santé, et des habitudes de vie physique. Ces résultats sont restés stables lors de l évaluation de la seconde année. Ce travail démontre que la mise en place d un programme de prise en charge pluridisciplinaire a permis de développer un habitus santé chez des enfants et adolescents en surpoids ou obèses.The aim of the present study was to assess a pultidisciplinary program in obese children. CEMHaVi (control, evaluation and Modification of Lifestyles), is a unique two years health-wellness program of physical activity and health education for obese youth. The first step of the preliminary work has been to show the equivalence and agreement of physical activity output data collected by the RT3 accelerometer during walking and running between treadmill vs. On-land. Once we had shown that data obtained on a treadmill were similar to those obtained on-land, we could, in one second step, to determine and validate on treadmill, the RT3 thresholds to detect various levels of physical activity : sedentary, light, moderate and vigorous. 37 children and adolescents participated in our follow up (37 were followed one year, and 7 on 2 years). The multidisciplinary program of exercice and health education in obese children and adolescents reduced BMI and improved academic performance, self esteem, self evaluation of academic performance, and the physical activity habitus. In addition quality of sleep were improved, achieving recommendations for duration of sleep to minimize health problems associated with sleep disorders. These results remained stable during the evaluation of the second year. This work of thesis shows that the follow up in obesity childhood with a multidisciplinary program (physical activity adapted and health education) enabled to develop a health habitus in obese youth.DUNKERQUE-BU Lettres Sci.Hum. (591832101) / SudocSudocFranceF

Évaluation de la condition physique des adolescents dans la région Île-de-France : comparaison avec les normes européennes

International audienceLa condition physique est un déterminant important de la santé des enfants et des adolescents. L’objectif de notre étude était d’évaluer la condition physique des adolescents habitant dans la région Île-de-France et de comparer les résultats avec d’autres pays européens. L’objectif secondaire était d’étudier la relation entre la condition physique et les futurs risques cardiovasculaires. Méthodes : 1 851 adolescents (946 garçons, 905 filles) âgés de 11 à 15 ans de la région Île-de-France ont participé à l’étude. L’endurance cardiorespiratoire et musculaire, la vitesse, la souplesse et l’agilité/coordination ont été évaluées par des professeurs d’éducation physique et sportive. Les différences entre les différentes variables ont été évaluées par des tests t indépendants. Les coefficients de corrélation de Spearman ont été utilisés pour évaluer la relation entre l’indice de masse corporelle (IMC), le statut socio-économique et la condition physique. Résultats : Globalement, les garçons ont de meilleures performances que les filles. Parallèlement, les adolescents « normaux-pondérés » ont de meilleurs résultats que les adolescents en surpoids ou obèses (p < 0,05). Les adolescents ayant un statut économique élevé ont une meilleure condition physique que les adolescents ayant un faible statut économique (p < 0,05). Les résultats de cette étude ont également montré que le pourcentage d’adolescents ayant un risque de développer une maladie cardiovasculaire à l’âge adulte est respectivement de 15,3 et 10,2 % pour les garçons et les filles. Conclusions : La condition physique des collégiens résidant dans la région Île-de-France est relativement faible comparée aux normes européennes existantes. Compte tenu des résultats, la mise en place de programmes de promotion de la santé dans les écoles de la région Île-de-France est nécessaire afin d’améliorer la santé et la condition physique de ces adolescents

Feasibility and reliability of the Self Administrated Children Lifestyle Assessment (SACLA), a new tool to measure children’s lifestyle behaviors: The VIF Program: reliability questionnaire

Introduction: To develop a self administrated Children Health-related behaviours assessment suitable, and to test its feasibility and reliability in &nbsp;French children. Methods: A sample of 216 children participated in the first stage of this study. An independent sample of 99 children participated in the assessment of reliability. Test and retest of the questionnaire were carried out to investigate test–retest reliability. Results: Missing or inappropriate responses on different parts of the questionnaire ranged from 0% to 35%. Some questions about drink intake have been modified or removed due to the high percentages of reported problems on these items. No problems were reported on the dimensions of physical activity habits and sedentary behaviors. The mean percentage of agreement in test–retest reliability for the questionnaire dimensions was 78% (47%–99%). Overall, kappa coefficients were good. Discussion: This instrument as an acceptable and reliable instrument for assessing lifestyle habits in French children