RESUMO
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.
RESUMO
Resumen Antecedentes: el cáncer es la segunda causa de muerte a nivel mundial, siendo uno de los más prevalentes el cáncer colorrectal. Diversos autores concluyen que un estilo de vida saludable previene en un 30 a 40 % el desarrollo de cualquier tipo de cáncer. Objetivo: evaluar retrospectivamente la ingesta de vitaminas C, E, fibra dietética, frutas, verduras, grasas saturadas, nivel de actividad física, sedentarismo, consumo de tabaco y alcohol en sujetos diagnosticados con cáncer colorrectal. Materiales y métodos: estudio descriptivo retrospectivo en 22 pacientes. Se aplicaron como instrumentos la encuesta de tendencia de consumo cuantificada, el cuestionario mundial sobre actividad física y la encuesta estructurada de caracterización. Resultados: el consumo de vitamina C fue de 131,8 mg/día; y de vitamina E, de 34,8 mg/día sobrepasando la recomendación diaria admisible (p<0,05). La ingesta de fibra dietética (8,6 g/día) fue menor a la recomendación (p<0,001). La actividad física moderada e intensa fue de 418 y 475 min/sem respectivamente, ambas mayores a la recomendación (p=0,029, p=0,015). Conclusión: una ingesta deficiente de fibra y verduras podría estar relacionada con la oncogénesis colorrectal.
Abstract Background: Cancer is the second cause of death globally and nationally in Chile. Various authors conclude that a healthy lifestyle prevents decreases the chances of developing any cancer by 30 to 40%. Objective: Retrospectively evaluate the intake of vitamin C, vitamin E, dietary fiber, fruits, vegetables, and saturated fats, and well as levels of physical activity, alcohol consumption and smoking in patients diagnosed with colorectal cancer. Materials and Methods: A descriptive retrospective study was conducted in 22 participants to establish the lifestyle factors associated with colorectal cancer. Food frequency questionnaires, a global physical activity questionnaire, and structured characterization survey were applied. Results: Vitamin C intake was 131.8 mg/day and vitamin E 34.8 mg/day, exceeding the recommended dietary allowances (p<0.05). The dietary fiber intake (8.6 g/day) was lower than the recommendation (p <0.001). Moderate and intense physical activity levels were 418 and 475 min/week respectively, both higher than the recommendation (p=0.029, p=0.015). Conclusions: Low intake of fiber and vegetables may be related to colorectal cancer.