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This article belongs to the Special Issue Dietary, Lifestyle and Children Health., We investigated which determinants (socioeconomic, early life factors, body composition changes, fitness changes and/or physical activity changes) best predicted longitudinal outcomes in cardiometabolic risk profile (Z-score change) in adolescents with OW/OB who underwent a 13-month multidisciplinary lifestyle intervention. A total of 165 adolescents (13–16 y; 46% boys) from the EVASYON study were included. Socioeconomic variables and early life factors were obtained from the medical records. Body composition was assessed using anthropometry. Fitness and physical activity were measured with field-based tests and questionnaires. Cardiometabolic risk factors (fasting glucose, HDL cholesterol, triglycerides, blood pressure and waist circumference) were derived from standard methods in the hospital. Body weight changes, sex and mother’s education were selected in the stepwise process as the most important determinants of changes in cardiometabolic risk profile (R2 = 0.26, p = 0.002; R2 = 0.14, p = 0.013; and R2 = 0.14, p = 0.017, respectively). Both boys and girls showed a lower cardiometabolic risk score with the reduction in body weight (r = 0.535, p = 0.009 and r = 0.506, p = 0.005, respectively). There was no interaction between sex and body weight change (p = 0.614). In conclusion, the simple measure of changes in body weight should be considered to track changes in cardiometabolic risk profile in adolescents with OW/OB., The study was supported by the Ministry of Health and Consumption via the Carlos III Institute of Health (FIS Grant PI051579). The EVASYON study (PI052369) received the award for the best applied research project in 2009 from AESAN (Spanish Agency for Food Safety and Nutrition) from the Spanish Ministry of Health and Consumer Affairs.

Se analiza el efecto del incremento de actividad física (AF) para conseguir el cumplimiento de recomendaciones de AF para la mejora de la salud según la Organización Mundial de la Salud en un grupo de 42 adolescentes (28 chicas) con sobrepeso/obesidad (IMC=29.37±4.5 Kg/m²). El tratamiento de 12 semanas de duración consistió en la prescripción y seguimiento de AF en dos fases: intensiva (seguimiento semanal) y extensiva (seguimiento quincenal). El nivel de AF se valoró mediante el cuestionario Physician-based Assessment and Counseling y la condición física mediante pruebas de fuerza isométrica del tren superior, fuerza explosiva de piernas y capacidad cardiorrespiratoria de la batería ALPHA. Tras el tratamiento se observa una mejora significativa (p, This study evaluated the effect of increased physical activity (PA) to achieve PA recommendations according to the World Health Organization for improving health in a group of 42 adolescents (28 girls) with overweight / obesity (BMI = 29.37 ± 4.5 Kg / m²). The 12 weeks treatment consisted in the prescription and follow-up of the PA guidelines divided in two phases: intensive (weekly follow-up) and extensive (fortnightly follow- up). PA level was assessed using the Physician-based Assessment and Counseling questionnaire and the Physical Fitness using upper body isometric strength test, lower body explosive strength test and cardiorespiratory fitness test, all from the ALPHA battery fitness tests. After treatment, a significant improvement was observed (p

Se analiza el efecto del incremento de actividad física (AF) para conseguir el cumplimiento de recomendaciones de AF para la mejora de la salud según la Organización Mundial de la Salud en un grupo de 42 adolescentes (28 chicas) con sobrepeso/obesidad (IMC=29.37±4.5 Kg/m²). El tratamiento de 12 semanas de duración consistió en la prescripción y seguimiento de AF en dos fases: intensiva (seguimiento semanal) y extensiva (seguimiento quincenal). El nivel de AF se valoró mediante el cuestionario Physician-based Assessment and Counseling y la condición física mediante pruebas de fuerza isométrica del tren superior, fuerza explosiva de piernas y capacidad cardiorrespiratoria de la batería ALPHA. Tras el tratamiento se observa una mejora significativa (p

Objectives To examine the associations of physical fitness (i.e. cardiorespiratory fitness, muscular strength, and speed/agility) with psychological distress and psychological well-being in overweight/obese pre-adolescent children. Design 110 overweight/obese children (10.0 ± 1.1 years old, 61 boys) from the ActiveBrains project ( http://profith.ugr.es/activebrains ) participated in this cross-sectional study. Methods Physical fitness was evaluated by the ALPHA battery test. Cardiorespiratory fitness was additionally evaluated by a maximal incremental treadmill. Stress was assessed by the Children’s Daily Stress Inventory, anxiety by the State-Trait Anxiety Inventory, depression by the Children Depression Inventory, positive affect and negative affect by the Positive and Negative Affect Scale for Children, happiness by the Subjective Happiness Scale, optimism by the Life Orientation Test, and self-esteem by the Rosenberg Self-Esteem questionnaire. Linear regression adjusted for sex and peak height velocity was used to examine associations. Results Absolute upper-body muscular strength was negatively associated with stress and negative affect ( β = −0.246, p = 0.047; β = −0.329, p = 0.010, respectively). Furthermore, absolute lower-body muscular strength was negatively associated with negative affect ( β = −0.301, p = 0.029). Cardiorespiratory fitness, expressed by the last completed lap, and relative upper-body muscular strength were positively associated with optimism ( β = 0.220, p = 0.042; β = 0.240, p = 0.017, respectively). Finally, absolute upper-body muscular strength was positively associated with self-esteem ( β = 0.362, p = 0.003) independently of sex and weight status (p for interactions >0.3), and absolute lower-body muscular strength was also positively associated with self-esteem ( β = 0.352, p = 0.008). Conclusions Muscular strength was associated with psychological distress (i.e. stress and negative affect) and psychological well-being (i.e. optimism and self-esteem) as well as cardiorespiratory fitness was associated with optimism. Therefore, increased levels of physical fitness, specifically muscular strength, could have significant benefits for overweight/obese children psychological health.

Tesis Univ. Granada. Departamento de Nutrición y Bromatología. Leída el 18 de diciembre de 2007

High physical fitness in childhood and adolescence is positively associated with favourable health-related outcomes. Our aim was to examine the relationship between relatives' (father, mother, brother, sister, and best friend) physical activity engagement and encouragement on adolescents' physical fitness. Adolescents were part of the HELENA study, a multi-centre study conducted in 10 cities from nine European countries in 2006-2008. Participants were 3288 adolescents (48% boys, 52% girls) aged 12.5-17.5 years with valid data on at least one of the three fitness variables studied: muscular strength (standing long jump), speed/agility (4×10 m shuttle run), and cardiorespiratory fitness (20 m shuttle run). The adolescents reported their relatives' physical activity engagement and encouragement. Analysis of covariance showed that relatives' physical activity engagement (father, mother, brother, and best friend) was positively related to cardiorespiratory fitness (P < 0.05); and mother's and sisters' physical activity engagement were positively associated with higher muscular strength in adolescents (P < 0.05). Furthermore, father's physical activity encouragement was positively linked to physical fitness (all fitness components) in adolescents (P < 0.05). Interventions aimed at improving physical fitness in young people might be more successful when family members, particularly mothers and fathers, are encouraged to engage in physical activity and support adolescents' physical activity. © 2012 Copyright Taylor and Francis Group, LLC.

Introduction: the main objectives of weight-loss interventions are to decrease fat mass while maintaining fatfree mass. Objective: our aim was to address effectiveness body composition changes in overweight adolescents assessed by different body composition methods following an obesity intervention programme. Material and methods: the life-style intervention was multi-disciplinary, with 13 months follow-up. Participants were 13-to-16 year-old overweight, or obese, Spanish adolescents. The adolescents (n = 156; 54.8% females) had body composition measured with anthropometry, dual-energy X-ray absorptiometry and air-displacement plethysmography. All measurements were made at baseline, and after 2- and 13-months. Repeated measures analysis of covariance to compare mean anthropometric changes over time and the Bonferroni correction were applied. Imputation of anthropometric measures was performed. Results: a high significant decrease in fat mass index was achieved in males after 2-and 13-months of intervention as measured by anthropometry (1.16 and 1.56 kg / m2, respectively), X-ray absorptiometry (1.51 and 1.91 kg / m2) and plethysmography (2.13 and 2.44 kg/m2). Moreover, a short and long-term maintenance of fat-and fat-free mass index was observed by X-ray absorptiometry in females (0.94 and 0.68 kg/m2). Introducción: el principal objetivo de las intervenciones de pérdida de peso es disminuir la masa grasa manteniendo la masa libre de grasa. Objetivo: evaluar la efectividad de una intervención multidisciplinar en la composición corporal de adolescentes con sobrepeso, evaluados mediante diferentes métodos de composición corporal. Material y métodos: la intervención fue multidisciplinar sobre el estilo de vida, aplicada durante 13 meses. Los participantes eran adolescentes entre 13 y 16 años con sobrepeso y obesidad. Los adolescentes (n = 156; 54,8% mujeres) fueron evaluados mediante antropometría, absorciometría dual de rayos X y pletismografía por desplazamiento de aire. Todas las mediciones se realizaron al inicio, a los 2 y a los 13 meses. Se aplicaron análisis de la covarianza de medidas repetidas y la corrección de Bonferroni. Se realizó la imputación de las medidas antropométricas. Resultados: se logró una alta disminución significativa en el índice de masa grasa en los hombres después de 2 y 13 meses de intervención, según antropometría (1,16 y 1,56 kg/m2, respectivamente), absorciometría de rayos X (1,51 y 1,91 kg/m2) y pletismografía (2,13 y 2,44 kg/m2). Por otra parte, el mantenimiento a corto y largo plazo de la grasa y libre de grasa en el índice de masa fue observado por absorciometría de rayos X en las mujeres (0,94 y 0,68 kg/m2).

[EN]: Introduction: the main objectives of weight-loss interventions are to decrease fat mass while maintaining fatfree mass. Objective: our aim was to address effectiveness body composition changes in overweight adolescents assessed by different body composition methods following an obesity intervention programme. Material and methods: the life-style intervention was multi-disciplinary, with 13 months follow-up. Participants were 13-to-16 year-old overweight, or obese, Spanish adolescents. The adolescents (n = 156; 54.8% females) had body composition measured with anthropometry, dual-energy X-ray absorptiometry and air-displacement plethysmography. All measurements were made at baseline, and after 2- and 13-months. Repeated measures analysis of covariance to compare mean anthropometric changes over time and the Bonferroni correction were applied. Imputation of anthropometric measures was performed. Results: a high significant decrease in fat mass index was achieved in males after 2-and 13-months of intervention as measured by anthropometry (1.16 and 1.56 kg / m2, respectively), X-ray absorptiometry (1.51 and 1.91 kg / m2) and plethysmography (2.13 and 2.44 kg/m2). Moreover, a short and long-term maintenance of fat-and fat-free mass index was observed by X-ray absorptiometry in females (0.94 and 0.68 kg/m2). Conclusion: our multidisciplinary approach to lifestyle intervention has a favourable impact on body fat mass and fat-free mass index as well as waist-to-height ratio, over 13 months intervention in overweight and obese adolescents. [ES]: Introducción: el principal objetivo de las intervenciones de pérdida de peso es disminuir la masa grasa manteniendo la masa libre de grasa. Objetivo: evaluar la efectividad de una intervención multidisciplinar en la composición corporal de adolescentes con sobrepeso, evaluados mediante diferentes métodos de composición corporal. Material y métodos: la intervención fue multidisciplinar sobre el estilo de vida, aplicada durante 13 meses. Los participantes eran adolescentes entre 13 y 16 años con sobrepeso y obesidad. Los adolescentes (n = 156; 54,8% mujeres) fueron evaluados mediante antropometría, absorciometría dual de rayos X y pletismografía por desplazamiento de aire. Todas las mediciones se realizaron al inicio, a los 2 y a los 13 meses. Se aplicaron análisis de la covarianza de medidas repetidas y la corrección de Bonferroni. Se realizó la imputación de las medidas antropométricas. Resultados: se logró una alta disminución significativa en el índice de masa grasa en los hombres después de 2 y 13 meses de intervención, según antropometría (1,16 y 1,56 kg/m2, respectivamente), absorciometría de rayos X (1,51 y 1,91 kg/m2) y pletismografía (2,13 y 2,44 kg/m2). Por otra parte, el mantenimiento a corto y largo plazo de la grasa y libre de grasa en el índice de masa fue observado por absorciometría de rayos X en las mujeres (0,94 y 0,68 kg/m2). Conclusión: la intervención multidisciplinar sobre estilo de vida tiene un impacto favorable en la masa grasa corporal y el índice de masa libre de grasa, así como en la relación cintura-altura, durante 13 meses de intervención en adolescentes con sobrepeso y obesidad. The study was supported by: the Ministry of Health, Social Services and Equality; the Spanish Government (Carlos III Institute of Health. FIS. Grant PI051080, PI051579).

Actividad Física y Deporte

A pesar de los reconocidos beneficios físicos, psíquicos y sociales que la práctica de actividad físico-deportiva produce en la salud de los jóvenes, la prevalencia de abandono y falta de este tipo de actividades está mostrando un importante aumento a nivel mundial, particularmente en los países desarrollados. Se precisan actuaciones educativas inmediatas para frenar esta situación. El objetivo del estudio es analizar la expresión de interés hacia la actividad físico-deportiva atendiendo al nivel de participación de ésta, y conocer los motivos de abandono y no práctica en una muestra representativa de adolescentes españoles. Se efectuó un estudio descriptivo de corte transversal y se empleó la encuesta sobre comportamientos, actitudes y valores sobre actividad físico-deportiva del estudio AVENA (Alimentación y Valoración del Estado Nutricional en Adolescentes). La muestra fue de 2.859 adolescentes españoles (1.357 hombres, 1.502 mujeres; rango de edad: 13-18,5 años) y elegida de entre los escolares de Enseñanza Secundaria, procedentes tanto de centros públicos como privados de cinco ciudades españolas: Granada, Madrid, Murcia, Santander y Zaragoza. Los principales resultados verifican una elevada expresión de interés hacia la práctica físico-deportiva aunque casi la mitad de los adolescentes indican un nivel de participación insuficiente respecto a lo que realmente querrían practicar. La exigencia del estudio y la pereza y desgana suponen los principales motivos de abandono de la misma. Respecto a los motivos de no práctica, la falta de tiempo, seguido muy de lejos por la pereza, la falta de gusto hacia la misma y el cansancio por el estudio o trabajo. El género y la edad modifican significativamente la expresión de interés y los motivos de abandono y no práctica físico-deportiva. El conocimiento de estos motivos podría permitir desarrollar programas de intervención eficaces y duraderos en la adopción de estilos de vida saludables en los jóvenes. Despite the recognized physical, psychological and social benefits of physical and sport practice in the health of young people, prevalence of doprout and lack of such activities is increasing in developed countries. Interventions of different society institutions are required, being particularly relevant educational institutions. The aim of the study is to analyze the interest physical activity and sport regarding the level of participation in this practice and to know the reasons for abandoning and non practicing in a representative sample of Spanish adolescents. A descriptive cross-sectional study was implemented and the survey about behaviours, attitudes and values related to physical activity and sport practice, which was developed in the AVENA (Feeding and assessment of nutritional status of spanish adolescents) study. The sample size was 2859 Spanish adolescents (1.357 men, 1.502 women; age range: 13-18.5 years) and chosen from among students of secondary education, both from public and private schools in five Spanish cities: Granada, Madrid, Murcia, Santander and Zaragoza. The main results show a high level of interest about physical activity and sport practice although almost half of the adolescents show an insufficient level regarding the level that they would like to practice. The demanding school and laziness and reluctante are the main reasons for stop practicing. The reasons for no practicing are lack of time, and much further the laziness, lack of pleasure with the practice and tiredness because of the school or work. Gender and age modify significantly the interest and reasons for abandoning and non practicing physical activity and sports. The knowledge of these reasons could allow to develop effective and long-term successful intervention programmes for adopting healthy lifestyles in young people. Apesar dos reconhecidos benefícios físicos, psíquicos e sociais que produz a pratica de atividade fisico-esportivo em jovens, a prevalência de abandono e a falta dessa atividade esta crescendo a nível mundial especialmente em países desenvolvidos. Necessitam atuações educativas imediatas para desacelerar essa situação. O objetivo desse estudo é de analisar a expressão do interesse à pratica físico-esportiva em relação com o nível de participação e conhecer os motivos de desistência e a não pratica em uma mostra representativa de adolescentes espanhóis. Foi realizado um estudo descritivo de corte transversal e empregou-se um questionário sobre comportamentos, atitudes e valores sobre a atividade físico-esportiva do estudo AVENA (alimentação e avaliação do estado nutricional em adolescentes). A mostra foi de 2.859 adolescentes espanhóis (1.357 homens, 1.502 mulheres; rango de idade: 13-18,5 anos) escolhida de centros escolares públicos e particulares do ensino secundário de cinco cidades espanholas: Granada, Madri, Murcia, Santander e Zaragoza. Os principais resultados verificam uma elevada expressão de interesse á pratica físico-esportiva, ainda que quase a metade dos adolescentes apresentam um nível de participação insuficiente a respeito do que realmente gostariam de praticar. A exigência dos estudos e a preguiça são os principais motivos de desistência da pratica de exercícios físicos. Em relação aos motivos da não pratica estão a falta de tempo, a preguiça, falta de gosto, cansaço por causa dos estudos e o trabalho. O gênero e a idade modificam significativamente a expressão do interesse e os motivos de desistência e da não pratica físico-esportiva. O conhecimento de esses motivos poderia permitir a elaboração de um programa de intervenções eficazes e de duração no estilo de vida saudável dos jovens.