Browsing by Autor "Olga L. Sarmiento"

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A lifeline for the disconnected: A longitudinal study of a cable car's impact on accessibility, satisfaction, and leisure activities
(Elsevier BV, 2025) Luis A. Guzmán; J. Sánchez; Victor A. Cantillo-Garcia; Santiago Gómez Cardona; Olga L. Sarmiento
Associations of the ‘weekend warrior’ physical activity pattern with all-cause, cardiovascular disease and cancer mortality: the Mexico City Prospective Study
(BMJ, 2024) Gary O’Donovan; Fanny Petermann‐Rocha; Gérson Ferrari; I‐Min Lee; Mark Hamer; Emmanuel Stamatakis; Olga L. Sarmiento; Agustín Ibáñez; Patricio López‐Jaramillo
This is the first prospective study to investigate the benefits of the weekend warrior physical activity pattern in Latin America. The results suggest that even busy adults could benefit from taking part in one or two sessions of exercise per week.
Behaviour change theory based research in the promotion of healthy diets and physical activity in Latin America
(Elsevier BV, 2012) Sarojini Maria Dos Remedios Monteiro; Carolyn Finck Barboza; Susana Barradas; Michael Pratt; Paola Ríos; Olga L. Sarmiento
Built Environment Attributes and Walking Patterns Among the Elderly Population in Bogotá
(Elsevier BV, 2010) Luis Fernando Gómez; Diana C. Parra; David M. Büchner; Ross C. Brownson; Olga L. Sarmiento; José D. Pinzón; Mauricio Ardila; José Manuel Moreno Villares; Mauricio Serrato; Felipe Lobelo
Data Resource Profile: Harmonized health survey data for 240 cities across 11 countries in Latin America: the SALURBAL project
(Oxford University Press, 2024) Kari Moore; Mariana Lazo; Ana Ortigoza; D. Alex Quistberg; Brisa N. Sánchez; Binod Acharya; Tania Alfaro; Maria F. Kroker‐Lobos; Mariana Carvalho de Menezes; Olga L. Sarmiento
Do Health Benefits Outweigh the Costs of Mass Recreational Programs? An Economic Analysis of Four Ciclovía Programs
(Springer Science+Business Media, 2011) Felipe Montes; Olga L. Sarmiento; Roberto Zarama; Michael Pratt; Guijing Wang; Enrique Jacoby; Thomas L. Schmid; Mauricio Ramos; Oscar Ruiz; Olga Vargas
Effects of a strategy for the promotion of physical activity in students from Bogotá
(University of São Paulo, 2018) Leidys Gutiérrez-Martínez; Rocío Gámez Martínez; Silvia A. González; Manuel A. Bolívar; Omaira Valencia; Olga L. Sarmiento
The Active Module of Active Recess is a promising strategy to increase physical activity levels and decrease sedentary behavior in students. The addition of Text Messages was not associated with increased moderate to vigorous physical activity or changes in adiposity.
Exposición Personal a Partículas Finas, Black Carbon y Monóxido de Carbono en Diferentes Microambientes de Transporte en la Ciudad De Bogotá, del año 2016 Al 2019
(2019) Daniela Méndez Molano; Juan Manuel Rincon Riveros; Boris Gálvis; Olga L. Sarmiento; Ricardo Morales Betancourt
Segun La Organizacion Mundial de la Salud, nueve de cada diez personas respiran un aire que excede las directrices establecidas por la OMS. En Colombia 15.681 muertes son atribuibles a la contaminacion atmosferica (INS,2018). Mas aun, diversos estudios realizados en los ultimos anos han demostrado que la exposicion a contaminantes para viajeros en entornos urbanos puede ser mucho mas alta que lo reportado por las estaciones de monitoreo y que los viajeros en vehiculos se exponen a concentraciones aun mas elevadas comparado con viajeros de otros modos. Lo anterior, evidencia la necesidad de caracterizar la exposicion personal y estimar su contribucion a la dosis diaria. En este trabajo reportamos una compilacion de campanas de medicion realizadas desde el ano 2016 enfocadas en la determinacion de la exposicion y la dosis de material particulado (PM 2.5 ), black carbon equivalente (eBC), particulas ultrafinas (UFP), y monoxido de carbono (CO). Estas campanas fueron realizadas en el sistema BRT de Bogota (Transmilenio, SITP, Alimentadores), Cable aereo, bicicletas y carros particulares. La concentracion de PM 2.5 , eBC y CO fue establecida con equipos DustTrak modelo 8520 y 8530 (TSI Inc.), Aethalometers (AE51, MicroAeth) y un medidor de celda electroquimica DeltaOhm, HD37AB1347 respectivamente. Las mayores concentraciones fueron observadas en el sistema Transmilenio, con un promedio de 160 µg/m 3 de PM 2.5, 80 µg/m 3 de eBC y 4.2 ppm de CO. Al calcular las dosis de exposicion por minuto se evidencian valores entre 1 y 2.5 µg/min de PM 2.5 en el sistema BRT. Dosis mas bajas (entre 0.5 y 1 µg/min) se encontraron en los medios de transporte alternativos. Al determinar la contribucion que tiene esta exposicion en la dosis diaria se estimo que el viaje en el Transmilenio representa entre el 60 y el 75% para PM 2.5 y entre el 80 y el 90% para eBC, siendo la mas alta comparada con otros modos. Esto deja claro que la implementacion de medios de transporte alternativo y la renovacion de la flota vehicular es necesaria en nuestra ciudad dado los beneficios colaterales para la salud que podrian ser muy significativos considerando los niveles de exposicion actuales.
Familial determinants of sedentary behaviour in children 5 to 18 years from Colombia*
(Elsevier BV, 2012) Inés González-Casanova; Aryeh D. Stein; Olga L. Sarmiento; Michael Pratt
Fostering collective action for adolescent well-being: citizen science in a Colombian semi-rural area
(Oxford University Press, 2024) Ana María Guerra; Eduardo De la Vega‐Taboada; Olga L. Sarmiento; Ann Banchoff; Abby C. King; Dionne P. Stephens; Luis D Revollo; Ana P Revollo; Felipe Montes
We present findings from the Our Voice in Barú project, examining adolescent engagement in citizen science to address environmental and social factors affecting well-being in a semi-rural Afro-descendant community in Latin America. The project aimed to identify barriers and enablers of well-being, informing adolescent-led actions for sustainable environmental changes relevant to adolescent health. Utilizing the Our Voice citizen science method, which involved technology-enabled walks, participatory cartography workshops and community meetings, we engaged adolescents and other community members. Complex systems framework was employed to analyze results and assess the promotion of collective action and local change. Local enablers of well-being included availability of quality sports and recreational venues as safe spaces, educational settings and cultural aspects, fostering safety, community pride, and personal growth. Conversely, barriers included environmental contamination, deteriorated sports venues and drug addiction, indicating the community's limited access to services and exposure to harmful substances. Adolescent citizen scientists, in partnership with the research team and relevant community decision-makers, successfully achieved changes aimed at identified barriers, including infrastructural enhancements like the repair of pumps to remove stagnant water, improvements in the quality and safety of recreational venues, and the implementation of community-led initiatives to address substance abuse and promote healthier behaviors. The Our Voice in Barú project empowered adolescents to advocate for change and promoted collective action to tackle barriers identified as significant to their well-being.
Investigating Variation in Adherence to Classroom Norms for Smoking and Vaping According to Individual Norms Sensitivities for Adolescents in Northern Ireland and Bogotá
(RELX Group (Netherlands), 2025) Jennifer Murray; Sharon Sánchez-Franco; Olga L. Sarmiento; Erik O. Kimbrough; Christopher Tate; Shannon C. Montgomery; Rajnish Kumar; Laura Dunne; Abhijit Ramalingam; Erin L. Krupka
Leisure-time physical activity reduces the risks of mortality associated with general and abdominal obesity in adults in Mexico
(2025) Gary O’Donovan; Fanny Petermann‐Rocha; Gérson Ferrari; Catalina Medina; Evelia Apolinar‐Jiménez; Olga L. Sarmiento
Abstract Aim Obesity is one of the leading public health problems in Mexico. Therefore, we investigated whether physical activity reduced the risks of mortality associated with obesity in participants in the Mexico City Prospective Study. Methods A total of 153,060 adults aged 52 (13) years were followed for 18 (4) years [mean (SD)]. Trained nurses asked about leisure-time physical activity and measured height, weight, and waist circumference. Cox models were adjusted for confounders and cardiovascular disease (CVD) and cancer mortality were treated as competing risks. Results There were 25,317 deaths from all causes, 8,488 from CVD, and 3,368 from cancer during follow-up. Compared with the group that reported little or no activity and had a normal body mass index, the hazard ratio (95 % confidence interval) for all-cause mortality was 1.40 (1.33, 1.47) in the group that reported little or no activity and had Obesity Class II. Physical activity reduced the risk of all-cause mortality associated with obesity. For example, the hazard ratio was 1.18 (1.06, 1.32) in the group that reported medium or high activity and had Obesity Class II. Physical activity also reduced the risk of CVD mortality associated with Obesity Class II and the risk of cancer mortality associated with Obesity Class I and Obesity Class II. Furthermore, physical activity reduced the risks of all-cause, CVD, and cancer mortality associated with high waist circumference. Conclusions This novel study suggests that leisure-time physical activity reduces the risks of mortality associated with general and abdominal obesity in adults in Mexico.
Logic model of the Recreovía: a community program to promote physical activity in Bogota
(Sociedade Brasileira de Atividade Física & Saúde, 2017) Ana Paola Ríos; Diana Páez; Edwin Pinzón; Rogério César Fermino; Olga L. Sarmiento
This study aimed to develop the logic model of the Recreovía program in Bogota, Colombia. The logic model was developed based on the manual of the Center of Disease Control and Prevention (CDC), with indicators of resources, activities and short- and long-term results. Mixed methods were used for data collection and analysis. Human, physical and financial resources, as well as collaborators of the program, were identified, besides the activities defined according to the program aims. In conclusion, the program emphasizes the processes and actors for their operation and maintenance, and recognizes future challenges for physical activity promotion in Bogota.
Mediation Analysis Investigating the Mechanisms of Two School-Based Smoking Prevention Interventions in Adolescents from Northern Ireland and Bogotá
(RELX Group (Netherlands), 2025) Jennifer Murray; Sharon Sánchez-Franco; Olga L. Sarmiento; Erik O. Kimbrough; Christopher Tate; Shannon C. Montgomery; Rajnish Kumar; Laura Dunne; Allen Thurston; Aideen Gildea
Moderators of Peer Influence Effects for Adolescents’ Smoking and Vaping Norms and Outcomes in High and Middle-Income Settings
(RELX Group (Netherlands), 2024) Jennifer Murray; Sharon Sánchez-Franco; Olga L. Sarmiento; Erik O. Kimbrough; Christopher Tate; Shannon C. Montgomery; Rajnish Kumar; Laura Dunne; Abhijit Ramalingam; Erin L. Krupka
Neighbourhoods’ social, built, and natural environment characteristics and body mass index in Latin American cities
(Oxford University Press, 2025) Santiago Rodríguez López; Ana V. Diez Roux; Natalia Tumas; Kari Moore; Olga L. Sarmiento; Brisa N. Sánchez; Carolina Pérez‐Ferrer; Sandra Flores‐Alvarado; Mónica Mazariegos; Usama Bilal
Neighbourhood education is associated with BMI beyond individual and city characteristics, although the associations are heterogenous across countries and by gender. Associations with built and natural features were less clear. Our results highlight the relevance of context-specific analysis for planning interventions that are aimed to reduce BMI and its unequal distribution in Latin American cities.
Niveles de actividad física y adiposidad en adultos de hogares colombianos con inseguridad alimentaria
(2020) Hansel Mora-Ochoa; Olga L. Sarmiento; Silvia A. González; Andrés Alvarado-Segovia; Mariana Escobar Arango; Yibby Forero
Introducción: La promoción de hábitos saludables y la reducción de la inseguridad alimentaria y nutricional (INSAN) son metas de políticas públicas nacionales en Colombia. Sin embargo, estudios que evalúen los niveles de actividad física e indicadores de adiposidad en hogares con INSAN son limitados. Objetivo: Evaluar el cumplimiento de las recomendaciones de actividad física e indicadores de adiposidad en relación con la inseguridad alimentaria y nutricional (INSAN) y con la participación de miembros del hogar en programas sociales de ayuda alimentaria, en la población adulta colombiana. Métodos: Se utilizaron encuestas nacionales de Colombia, ENSIN y ENDS 2010, y se estimaron razones de prevalencia a partir de modelos de regresión binomial negativa. Resultados: Los adultos de hogares con INSAN presentaron mayor cumplimiento de las recomendaciones de actividad física montando en bicicleta y caminando como medios de transporte (PR=1,23; IC95% 1,03-1,47; PR=1,10; IC95% 1,03-1,17), y los adultos de hogares con beneficiarios de programas de ayuda alimentaria presentaron un mayor cumplimiento de las recomendaciones de actividad al montar en bicicleta como medio de transporte (PR=1,33; IC95% 1,10-1,62). Los adultos de hogares con INSAN presentaron menor sobrepeso (PR=0,92; IC95% 0,86-0,97) y menor obesidad abdominal (PR=0,94; IC95% 0,90-0,98). Conclusiones: El estudio identificó los niveles del cumplimiento de las recomendaciones de actividad física y los niveles de adiposidad entre adultos pertenecientes a hogares con inseguridad alimentaria y hogares con miembros que participan en programas nacionales de seguridad alimentaria. Esta situación representa una oportunidad para acciones gubernamentales destinadas a mejorar las condiciones de estos hogares vulnerables a través de programas integrales que promuevan hábitos saludables.
Niveles de material particulado en colegios distritales ubicados en vías con alto tráfico vehicular en la ciudad de Bogotá: estudio piloto
(Universidad de Antioquia, 2009) Juan Felipe Franco; Néstor Y. Rojas; Olga L. Sarmiento; Luis Jorge Hernandéz; Elizabeth C Zapata; Andrea Maldonado; Leonardo Matiz; Eduardo Behrent
"Se presenta un estudio piloto en el que se caracterizaron los niveles de material particulado respirable (PM10) en cuatro colegios distritales (CD) en Bogotá. Tres de estos CD estaban ubicados en inmediaciones de vías consideradas de alto tráfico vehicular, por las que circulan diferentes tipos de transporte público (colectivo convencional y masivo). El CD restante (utilizado como sitio control para el experimento) se encontraba ubicado sobre una vía en una zona semi-rural de la ciudad. La determinación de las concentraciones atmosféricas de PM10 se realizó utilizando técnicas de medición gravimétricas y en tiempo real. Los niveles medios de PM10 registrados en los CD se encuentran en un rango entre 55 y 91 ug m-3. Estas cifras indican que las concentraciones del contaminante al interior de las instituciones educativas exceden los valores considerados como nocivos para poblaciones sensibles por la Organización Mundial de la Salud. Se encontraron diferencias significativas entre las concentraciones de PM10 encontradas en el CD seleccionado como control y las concentraciones encontradas en los otros CD. Los resultados aquí presentados corresponden a la línea base de un estudio longitudinal que aún está en desarrollo y evidencian la necesidad de continuar con investigación orientada a caracterizar el rango de concentraciones de material particulado en las inmediaciones de las principales vías de la ciudad de Bogotá."
Our Voice in a Rural Community: Empowering Colombian Rural Adolescents to Advocate for Community Well-being through Citizen Science
(Research Square (United States), 2022) Felipe Montes; Ana María Guerra; Diana Higuera-Mendieta; Eduardo De la Vega‐Taboada; Abby C. King; Ann Banchoff; Augusto César Rodríguez Maturana; Olga L. Sarmiento
Abstract Backround: Santa Ana is home to an Afro-descendant rural population of the island of Barú in Cartagena, Colombia. While a popular area for tourism, Santa Ana’s population is affected by multidimensional poverty, precarious work conditions, homelessness, broken streets and sewer systems, limited quality education, and lack of recreation and sport spaces. While Santa Ana’s Community Action Board aims to unify efforts and resources to solve these problems, the state’s capacity to meet the requirements of the Board is limited. Methods: We evaluated the relationship between healthy lifestyles and characteristics of Santa Ana’s school using the Our Voice Citizen Science Research Method. This systemic approach combines information and communication technologies with group facilitation to empower adolescents to: 1) collect and discuss data about factors in their local environments that facilitate or hinder well-being within their school community; 2) identify relevant local stakeholders who could help to address the issues identified; and 3) advocate collectively for local improvements to support increased well-being at a community level. Results: Eleven citizen scientists ages 13 to 17 years from the science club of Institución Educativa Santa Ana were recruited and together conducted 11 walks within the school to collect data about the facilitators and barriers to student well-being. They identified barriers to well-being related to school infrastructure, furniture, bathrooms, and sense of belonging. They then advocated with school stakeholders and reached agreements on concrete actions to address identified barriers, including fostering a culture among students of caring for school property, and presenting their findings to the community action board. This methodology allowed the community to realize how students can become agents of change and take collective action when motivated by practice-focused methodologies such as Our Voice. Project ripple effects, including greater empowerment and participation in collective actions by students, also were observed. Conclusions: This study underscores the importance of the school’s built environment in the well-being of students in rural areas. The Our Voice method provided the opportunity to inform school-based interventions, and promoted ripple effects that expanded productive dialogue to the community level and generated systemic actions involving actors outside of the school community.
Particulate matter concentrations at public schools located near major urban roads in Bogota, Colombia: a pilot study
(Universidad de Antioquia, 2013) Juan Felipe Franco; Néstor Y. Rojas; Olga L. Sarmiento; Luis Jorge Hernandéz; Elizabeth C Zapata; Andrea Maldonado; Leonardo Matiz; Eduardo Behrent
A pilot study, in which we conducted inhalable particulate matter (PM10) measurements in four public elementary schools in Bogotá, is presented. Three of these schools are located alongside major urban roads with different types of public transportation. The remainder school is located alongside a rural road. PM10 measurements were carried out using both gravimetric and real time techniques. Average PM10 concentrations found in the schools ranged from 55 ug m-3 to 91 ug m-3. These pollutant concentrations are above the World Health Organization reference values. Significant differences in PM10 concentrations were observed between the schools located in urban roads and the school located in the semi-rural area. The present work corresponds to the base line results of a longitudinal study that is still being conducted. These results demonstrate the importance of continuing developing research aimed at characterizing the range of atmospheric pollutants at major city roads environs in Bogota.