Examinando por Autor "Olivares, Pedro R."
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Ítem Bullying and Self-Concept, Factors Affecting the Mental Health of School Adolescents(MDPI, 2023-08) Galán-Arroyo, Carmen; Gómez-Paniagua, Santiago; Contreras-Barraza, Nicolás; Adsuar, José Carmelo; Olivares, Pedro R.; Rojo-Ramos, JorgeBullying is an aggressive and repetitive behavior, where one person or several people physically, socially, or emotionally harm a vulnerable person and provokean imbalance of power in a school setting. Several factors such as age, sex, school performance, psychological factors, and ethnicity have been associated with bullying and more are being sought. Thus, the objectives of this study were as follows: (1) analyze the differences in bullying (victimization and aggression) and self-concept (academic, social, emotional, family, and physical) with respect to sex, school location, and educational level among Spanish adolescents; (2) explore the associations of bullying and self-concept with these sociodemographic dimensions. A cross-sectional study was designed with a total of 1155 participants (between 12 and 18 years old); there were 48.8% boys and 51.2% girls, where 75.9% studied compulsory secondary education (CSE) and 24.1% Baccalaureate, and 31.9% were students from rural schools and 68.1% were from urban schools. Medium and inverse correlations were shown between victimization and self-concept at the general level, for both sexes, both types of school, and both educational stages. For the aggression dimension, the correlations with self-concept were inverse at the general level (low), in girls (low), in rural students (medium), and in compulsory secondary education students (medium). For academic self-concept and family self-concept, the associations were medium and inverse with bullying in all variables. For emotional self-concept the correlation with bullying was direct and medium in all variables; in physical self-concept, the correlations with bullying were inverse in almost all variables except in boys. Self-concept may be a protective factor for bullying and interventions should aim at adolescents building a positive multidimensional self-concept that prevents and protects them from bullying either as aggressor or victim. © 2023 by the authors.Ítem Effectiveness of an Ecological Model-Based Active Transport Education Program on Physical and Mental Health in High School Students (MOV-ES Project): Study Protocol for a Randomized Controlled Trial(Multidisciplinary Digital Publishing Institute (MDPI), 2024-07) Merellano-Navarro, Eugenio; Godoy-Cumillaf, Andrés; Collado-Mateo, Daniel; Aguilar-Valdés, Mirko; Torres-Mejías, Jorge; Almonacid-Fierro, Alejandro; Valdés-Badilla, Pablo; Giakoni-Ramírez, Frano; Bruneau-Chávez, José; Olivares, Pedro R.The United Nations, through its 2030 Agenda and Sustainable Development Goals, advocates for the establishment of conducive environments for physical activity, following the ecological model. In line with this initiative, active transportation emerges as an accessible, cost-effective, and sustainable approach to augmenting daily physical activity levels. This study protocol endeavors to assess the impact of an active transportation education program rooted in the ecological model on the physical and mental well-being of high school students. Drawing upon scientific insights, we hypothesize that a 16-week active transportation intervention will lead to a 3% reduction in average body fat percentage and a noteworthy enhancement in executive function (including inhibition, cognitive flexibility, and working memory), physical fitness (comprising cardiorespiratory fitness and muscle strength), and mental health (encompassing mood disorders and cognitive functioning). If this intervention proves effective, it could offer a viable solution for the school community, especially in reducing congestion within the school environment. The study protocol aims to evaluate the impact of an active transportation educational program based on the ecological model on the physical and mental well-being of high school students. Three high schools located in the urban area of Talca, Chile, will be randomly selected (one public, one privately subsidized, and one private non-subsidized). Each high school will be randomly assigned an experimental group (n = 30) and a control group (n = 30; without intervention). The experimental groups will receive an active transportation educational intervention during their physical education classes for four months (60 to 90 min sessions, once a week), while the control group will receive no intervention. The primary outcome will provide information on body composition and executive function. Secondary outcomes will include objective physical activity level, physical fitness, mental well-being, academic achievement, health-related quality of life, perception of environmental urban features, physical activity barriers, and adherence to active transportation. It is expected that the results of the MOV-ES Project will transcend the physical health of schoolchildren and will have an impact on the school community, especially by decongesting the school environment.Ítem Physical activity, screen time and subjective well-being among children(Elsevier Doyma, 2020-05) García-Hermoso, Antonio; Hormazábal-Aguayo, Ignacio; Fernández-Vergara, Omar; Olivares, Pedro R.; Oriol-Granado, XavierBackground/Objective: The aim of the study was to explore the differences between physical activity and/or screen time levels on cognitive (Life satisfaction LS) and affective (Positive affect, PA and Negative affect NA) components of subjective well-being (SWB) in children. Method: This cross-sectional study enrolled 1,540 children (1,040 boys, 8–12 years old). LS, PA, NA, physical activity and screen time were assessed with validated questionnaires. Results: Children who reported 3 days per week of physical activity or less had lower LS and PA than counterparts with ≥6 days of physical activity per week (p < .05). Participants who reported 2 hours per day or less of screen time had lower NA than counterparts with 4 hours per day or more of screen time (p < .05). Also, children who meet physical activity guidelines have higher LS and PA compared to inactive peers, even with high screen time. In contrast, excessive screen time was also related with NA independent of the level of physical activity. Conclusions: Our findings suggest that physical activity is related with positive feelings and LS, but does not eliminate the effect of screen time on negative feelings among Chilean children.