Examinando por Autor "Merellano-Navarro, Eugenio"
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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 Effects of a physical exercise program executed through immersive virtual reality on physical fitness and body composition in college adults: protocol for a randomized controlled trial(Federacion Espanola de Docentes de Educacion Fisica, 2025-04) Fuentes-Merino, Paola; Godoy-Cumillaf, Andrés; Ramírez, Frano Giakoni; Duclos-Bastías, Daniel c; Bruneau-Chávez, José; Merellano-Navarro, Eugenio; Bizzozero-Peroni, BrunoIntroduction and objective: The constant practice of physical activity contributes to obtaining adequate values of physical fitness and body composition, which brings benefits to people's health. Even though scientific evidence exposes the health effects of physical activity, the adult population has a low prevalence of exercise due to lack of time, lack of sports venues, factors that increase in university students due to academic demands. One tool that could be useful in removing barriers to not practicing physical activity may be immersive virtual reality, as evidence suggests that it can be a tool that promotes the practice of physical activity, so the objective of this randomized controlled trial protocol is to evaluate the impact of a physical exercise program performed through immersive virtual reality on physical fitness and body composition in a university population. Methodology: An intervention group (n=18) and a control group (n=18) will be randomly selected. The intervention group will execute a physical exercise program through immersive virtual reality for 12 weeks. All participants will be evaluated at the beginning and end of the intervention to determine the effect of the program on physical fitness and body composition. Conclusions: This randomized controlled trial will provide information on the effect of physical exercise through virtual reality on the variables studiedÍtem Intensity of a Physical Exercise Programme Executed through Immersive Virtual Reality(MDPI, 2023-09) Giakoni-Ramírez, Frano; Godoy-Cumillaf, Andrés; Fuentes-Merino, Paola; Farías-Valenzuela, Claudio; Duclos-Bastías, Daniel; Bruneau-Chávez, José; Merellano-Navarro, Eugenio; Velásquez-Olavarría, RonaldEvidence suggests that moderate to vigorous physical activity (MVPA) is necessary for health benefits. Immersive virtual reality is a technology that uses images, sounds, and tactile sensations from a simulated world to encourage healthy behaviours and physical activity. The aims of this research are (1) to determine the duration and intensity of physical activity performed through immersive virtual reality; (2) to determine differences in physical activity intensity according to gender. Methods: A nonprobabilistic convenience sample composed of 39 university students of physical education pedagogy, who performed, through immersive virtual reality, a physical activity programme composed of three levels that progressively increased in complexity. Physical activity intensity was measured using accelerometers. Results: Of the three levels, the most complex was not the one that produced the most minutes of MVPA. The three levels added up to 08:53 min of MVPA. No significant differences were found when comparing them by sex. Conclusions: The results of this study suggest that an exercise programme delivered through immersive virtual reality generates MVPA levels, with no major differences between sexes. Further research is needed to confirm the contribution of immersive virtual reality to physical activity. © 2023 by the authors.Ítem The Association between Sedentary Behavior, Physical Activity, and Physical Fitness with Body Mass Index and Sleep Time in Chilean Girls and Boys: A Cross-Sectional Study(MDPI, 2023-05) Godoy-Cumillaf, Andrés; Fuentes-Merino, Paola; Farías-Valenzuela, Claudio; Duclos-Bastías, Daniel; Giakoni-Ramírez, Frano; Bruneau-Chávez, José; Merellano-Navarro, EugenioBackground: In recent decades, the school population has undergone behavioral changes that have affected their health and adult life. The current educational scenario presents high levels of sedentary behavior, physical inactivity, low physical fitness, high levels of obesity, and non-compliance with sleep recommendations. In Chile, the scientific evidence on associations between these behaviors is incipient. Objective: To analyze the association between sedentary behavior, physical activity, and physical fitness with BMI and minutes of sleep in Chilean children aged 10 to 11 years. Methods: A non-probabilistic convenience sample of 222 schoolchildren aged 10 to 11 years. The variables measured were body composition (BMI), cardiorespiratory fitness (20 m shuttle run test), lower and upper muscular strength (long jump test and handgrip dynamometry), speed (4 × 10 m running), and flexibility (sit and reach test). Physical activity and sleep were measured by accelerometers. Results: Of the participants, 60.4% and 90.6% did not comply with sleep and physical activity recommendations, respectively. Physical fitness was higher in boys in all components. The results of the linear regression show that in girls, moderate–vigorous-intensity physical activity, lower- and upper-body muscular strength, and cardiorespiratory endurance were associated with BMI and sleep. In boys, light-intensity physical activity and upper-body muscular strength were associated with both variables. Conclusions: Physical activity intensity, strength, and cardiorespiratory fitness were associated with BMI and sleep; however, physical activity intensity and associated physical fitness components differed by gender. © 2023 by the authors.Ítem The Effects of a Physical Activity Intervention on Adiposity, Physical Fitness and Motor Competence: A School-Based, Non-Randomized Controlled Trial(Multidisciplinary Digital Publishing Institute (MDPI), 2024-01) Godoy-Cumillaf, Andrés; Fuentes-Merino, Paola; Giakoni-Ramírez, Frano; Duclos-Bastías, Daniel; Bruneau-Chávez, José; Merellano-Navarro, EugenioEvidence suggests that early physical activity interventions are a means of preventing childhood obesity and are more effective when delivered in a school setting and based on the ecological model. Therefore, the present study aims to determine the effect of a multicomponent intervention based on the ecological model on adiposity, physical fitness and motor competence in children aged 4 to 5 years. Methods: This study is a non-randomized controlled trial involving 173 children from Chile. The intervention was based on an ecological model and consisted of a physical activity program with three simultaneous parts, affecting intra- and interpersonal dimensions. The adiposity index, body mass index and waist circumference were measured. For physical fitness, muscle strength in the lower part, speed/agility and cardiorespiratory fitness were measured. Motor competence was assessed using catching, aiming and dynamic and static balance tests. Results: After the intervention, there was no reduction in adiposity indices; in the intervention group, body mass index increased significantly with a high effect size. The intervention group showed significant differences in physical fitness in the components of muscle strength in the lower part (p = 0.000) and speed/agility (p = 0.002). For motor competence, the intervention group showed significant improvements in most components. Conclusions: The multicomponent intervention did not reduce adiposity indices; however, it caused significant improvements in the physical fitness and motor competence components, so it seems prudent to continue implementing it, given the benefits that adequate levels of motor competence and physical fitness bring to children’s health, both in the short and long term