ABSTRACT Objective Evaluate the effectiveness of structural or multicomponent interventions aimed at increasing the use of condoms in adolescents and young adults, identifying the strategies that form the interventions evaluated, and recognizing the theoretical models that support these interventions. Methodology Design: Systematic review of literature. Data source: MEDLINE databases were consulted via OVID, Embase, and CENTRAL in order to search for studies on interventions aimed at increasing the use of condoms in adolescents and young adults. Selection of studies: A total of 7 primary investigations were selected, in which the effect of a structured or multicomponent intervention to increase the use of condoms in adolescents and young adults was evaluated. The quality of the studies was evaluated using the Cochrane bias risk assessment. Results Five investigations show changes in the percentages of condom use with values between 53% and 68%. The interventions targeted guided their actions more at individual level with strategies such as sexual health education, reproductive health counseling, knowledge about the condom, knowledge about STIs / HIV, than at organizational and environ-mental levels, which were aimed at the provision of condoms. The theoretical models proposed in the studies are focused on human behavior, individual behavior, and social learning. Conclusion Structural interventions that aim to increase the use of condoms in adolescents and young adults seem to show significant changes at individual level, but possible changes generated at both organization and environment levels are unknown.

RESUMEN Objetivo Evaluar la efectividad de las intervenciones de tipo estructural o multicomponente dirigidas al incremento del uso del preservativo en adolescentes y jóvenes, identificar las estrategias que conforman las intervenciones evaluadas y reconocer los modelos teóricos que sustentan dichas intervenciones. Metodología Diseño: revisión sistemática de la literatura. Fuente de datos: se consultaron las bases de datos MEDLINE vía OVID, Embase y CENTRAL para buscar estudios sobre intervenciones dirigidas al incremento del uso del preservativo en adolescentes y jóvenes. Selección de estudios: se seleccionaron un total de 7 investigaciones primarias donde se evaluaba el efecto de una intervención estructural o multicomponente para incrementar el uso del preservativo en adolescentes y jóvenes. La calidad de los estudios fue evaluada usando la herramienta para valoración de riesgo de sesgos de Cochrane. Resultados Cinco investigaciones mostraron cambios en los porcentajes del uso del preservativo con valores entre 53 % y el 68 %. Las intervenciones planteadas orientaban sus acciones más a nivel individual con estrategias como: educación sobre salud sexual, consejería en salud reproductiva, conocimientos acerca del preservativo, conocimientos acerca de las ITS/VIH. A nivel organizacional y del entorno iban dirigidas a la provisión de preservativos. Los modelos teóricos planteados en los estudios están centrados en la conducta humana, comportamiento del individuo y el aprendizaje social. Discusión Las intervenciones de tipo estructural que tienen como fin el incremento del uso del preservativo en adolescentes y jóvenes parecen mostrar cambios significativos a nivel individual, pero se desconocen los posibles cambios generados a nivel de la organización y del entorno.

RESUMEN Objetivo Evaluar la efectividad de las intervenciones de tipo estructural o multicomponente dirigidas al incremento del uso del preservativo en adolescentes y jóvenes, identificar las estrategias que conforman las intervenciones evaluadas y reconocer los modelos teóricos que sustentan dichas intervenciones. Metodología Diseño: revisión sistemática de la literatura. Fuente de datos: se consultaron las bases de datos MEDLINE vía OVID, Embase y CENTRAL para buscar estudios sobre intervenciones dirigidas al incremento del uso del preservativo en adolescentes y jóvenes. Selección de estudios: se seleccionaron un total de 7 investigaciones primarias donde se evaluaba el efecto de una intervención estructural o multicomponente para incrementar el uso del preservativo en adolescentes y jóvenes. La calidad de los estudios fue evaluada usando la herramienta para valoración de riesgo de sesgos de Cochrane. Resultados Cinco investigaciones mostraron cambios en los porcentajes del uso del preservativo con valores entre 53 % y el 68 %. Las intervenciones planteadas orientaban sus acciones más a nivel individual con estrategias como: educación sobre salud sexual, consejería en salud reproductiva, conocimientos acerca del preservativo, conocimientos acerca de las ITS/VIH. A nivel organizacional y del entorno iban dirigidas a la provisión de preservativos. Los modelos teóricos planteados en los estudios están centrados en la conducta humana, comportamiento del individuo y el aprendizaje social. Discusión Las intervenciones de tipo estructural que tienen como fin el incremento del uso del preservativo en adolescentes y jóvenes parecen mostrar cambios significativos a nivel individual, pero se desconocen los posibles cambios generados a nivel de la organización y del entorno.

ABSTRACT Objective Evaluate the effectiveness of structural or multicomponent interventions aimed at increasing the use of condoms in adolescents and young adults, identifying the strategies that form the interventions evaluated, and recognizing the theoretical models that support these interventions. Methodology Design: Systematic review of literature. Data source: MEDLINE databases were consulted via OVID, Embase, and CENTRAL in order to search for studies on interventions aimed at increasing the use of condoms in adolescents and young adults. Selection of studies: A total of 7 primary investigations were selected, in which the effect of a structured or multicomponent intervention to increase the use of condoms in adolescents and young adults was evaluated. The quality of the studies was evaluated using the Cochrane bias risk assessment. Results Five investigations show changes in the percentages of condom use with values between 53% and 68%. The interventions targeted guided their actions more at individual level with strategies such as sexual health education, reproductive health counseling, knowledge about the condom, knowledge about STIs / HIV, than at organizational and environ-mental levels, which were aimed at the provision of condoms. The theoretical models proposed in the studies are focused on human behavior, individual behavior, and social learning. Conclusion Structural interventions that aim to increase the use of condoms in adolescents and young adults seem to show significant changes at individual level, but possible changes generated at both organization and environment levels are unknown.

RESUMEN Objetivo Determinar los factores asociados a la adherencia a la actividad física en pacientes con enfermedades crónicas no transmisibles ECNT en la red de salud Ladera del municipio de Santiago de Cali. Métodos Se realizó un estudio de casos y controles con 268 adultos con diagnóstico de Diabetes o Hipertensión u obesidad, 134 casos y 134 controles de la red de salud E.S.E Ladera. Para el análisis univariado se realiza análisis de frecuencias y estadística descriptiva. En el análisis bivariado se aplican pruebas de Chi-cuadrado y t de Student, ambas con un IC del 95%, para el análisis Multivariado se realizó regresión logística binaria y se estimó la razón de probabilidad a través del Odds Ratio (OR). Resultados Factores con OR<1: la autopercepción del estado de salud, espacios adecuados para la actividad física, autocuidado de la salud, periodicidad de actividad, demostraron ser facilitadores para la adherencia a la actividad física. Los factores con OR>1: estar solo durante el día, haber dejado de realizar ejercicio físico, considerar el ejercicio físico poco importante, espacios inseguros, falta de prescripción del ejercicio, fueron barreras para la adherencia a la actividad física. Conclusiones Percibirse con buena calidad de vida, tener la actividad física programada por el sistema de salud y ambientes adecuados y seguros, facilitan la adherencia, mientras no pertenecer a un grupo familiar, no considerar la prescripción a la actividad física importante y estar en zonas inseguras, limitan la adherencia.

ABSTRACT Objective To determine the factors associated with adherence to physical activity in patients with chronic non-communicable diseases (CND) in the Ladera health network of the municipality of Santiago de Cali. Methods A case-control study was conducted with 268 adults diagnosed with diabetes, high blood pressure or obesity, 134 cases and 134 controls, treated at the Empresa Social del Estado (E.S.E) Ladera healthcare network. Univariate analysis included frequency analysis and descriptive statistics. Chi-square and t Student tests were applied for bivariate analysis, both with a 95% CI; binary logistic regression was performed for the multivariate analysis and probability was estimated using the Odds Ratio (OR). Results Factors with OR<1 -self-perception of physical condition, appropriate spaces for physical activity, self-care, and frequency of activity- promote adherence to physical activity. Factors with OR>1 -being alone during the day, having stopped doing physical exercise, considering physical exercise as unimportant, unsafe spaces, and lack of indication of exercise- were barriers to adherence to physical activity. Conclusions Perceiving oneself with good quality of life and having a physical activity prescription by the healthcare system, as well as adequate and safe environments, promote adherence. On the other hand, not belonging to a family group, considering physical activity prescription as unimportant and being in unsafe areas, hinder adherence.

ABSTRACT Objective To determine the factors associated with adherence to physical activity in patients with chronic non-communicable diseases (CND) in the Ladera health network of the municipality of Santiago de Cali. Methods A case-control study was conducted with 268 adults diagnosed with diabetes, high blood pressure or obesity, 134 cases and 134 controls, treated at the Empresa Social del Estado (E.S.E) Ladera healthcare network. Univariate analysis included frequency analysis and descriptive statistics. Chi-square and t Student tests were applied for bivariate analysis, both with a 95% CI; binary logistic regression was performed for the multivariate analysis and probability was estimated using the Odds Ratio (OR). Results Factors with OR<1 -self-perception of physical condition, appropriate spaces for physical activity, self-care, and frequency of activity- promote adherence to physical activity. Factors with OR>1 -being alone during the day, having stopped doing physical exercise, considering physical exercise as unimportant, unsafe spaces, and lack of indication of exercise- were barriers to adherence to physical activity. Conclusions Perceiving oneself with good quality of life and having a physical activity prescription by the healthcare system, as well as adequate and safe environments, promote adherence. On the other hand, not belonging to a family group, considering physical activity prescription as unimportant and being in unsafe areas, hinder adherence.

RESUMEN Objetivo Determinar los factores asociados a la adherencia a la actividad física en pacientes con enfermedades crónicas no transmisibles ECNT en la red de salud Ladera del municipio de Santiago de Cali. Métodos Se realizó un estudio de casos y controles con 268 adultos con diagnóstico de Diabetes o Hipertensión u obesidad, 134 casos y 134 controles de la red de salud E.S.E Ladera. Para el análisis univariado se realiza análisis de frecuencias y estadística descriptiva. En el análisis bivariado se aplican pruebas de Chi-cuadrado y t de Student, ambas con un IC del 95%, para el análisis Multivariado se realizó regresión logística binaria y se estimó la razón de probabilidad a través del Odds Ratio (OR). Resultados Factores con OR<1: la autopercepción del estado de salud, espacios adecuados para la actividad física, autocuidado de la salud, periodicidad de actividad, demostraron ser facilitadores para la adherencia a la actividad física. Los factores con OR>1: estar solo durante el día, haber dejado de realizar ejercicio físico, considerar el ejercicio físico poco importante, espacios inseguros, falta de prescripción del ejercicio, fueron barreras para la adherencia a la actividad física. Conclusiones Percibirse con buena calidad de vida, tener la actividad física programada por el sistema de salud y ambientes adecuados y seguros, facilitan la adherencia, mientras no pertenecer a un grupo familiar, no considerar la prescripción a la actividad física importante y estar en zonas inseguras, limitan la adherencia.

Little is known about the molecular mechanisms underlying the release of merozoites from malaria infected erythrocytes. In this study membranous structures present in the culture medium at the time of merozoite release have been characterized. Biochemical and ultrastructural evidence indicate that membranous structures consist of the infected erythrocyte membrane, the parasitophorous vacuolar membrane and a residual body containing electron dense material. These are subcellular compartments expected in a structure that arises as a consequence of merozoite release from the infected cell. Ultrastructural studies show that a novel structure extends from the former parasite compartment to the surface membrane. Since these membrane modifications are detected only after merozoites have been released from the infected erythrocyte, it is proposed that they might play a role in the release of merozoites from the host cell