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Background: Physical activity may improve quality of life in patients with chronic kidney disease. Aim: To assess the relationship between physical activity and quality of life in patients with Chronic Kidney Disease. Material and Methods: The Kidney Disease Quality of Life-36 (KDQOL-36) and the International Physical Activity questionnaire were answered by 130 patients with chronic kidney disease (74 women, 80 receiving renal substitution therapy). Sociodemographic variables were recorded. Results: Patients on renal substitution therapy with a time lapse since diagnosis of 0 to 6 months had higher levels of physical activity than those with longer time lapses (51.4 ± 12.5 and 34.6 ± 8.1 minutes respectively). Disease burden scores were lower among patients with renal substitution therapy. There was a direct correlation between levels of vigorous and moderate physical activity and the physical functioning dimension in the quality of life questionnaire for patients with more than 19 months of disease. The dimension general physical health was significantly associated with physical activity in women and patients with 7 to 18 months of diagnosis. The dimension disease burden was associated with physical activity in women, patients not receiving substitution therapy and those with 7 to 18 months of diagnosis. Conclusions: Moderate and vigorous physical activity is directly related to the dimensions physical functioning, the general perception of physical health and inversely related with the dimension burden of disease.

Este documento evalúa el comportamiento y la magnitud de los diferenciales salariales en Colombia entre trabajadores rurales y urbanos, y jóvenes (18-24 años) y mayores (25-65 años), durante 2002-2009. La aplicación de pruebas de raíz unitaria y la metodología matching de descomposición de brechas salariales concluyen que si bien existen diferencias en los niveles de salario de los grupos de interés, no hay divergencia cuando se comparan individuos con iguales características. Los diferenciales salariales encontrados son de -50 por ciento para trabajadores rurales y -40 por ciento para jóvenes, de los cuales alrededor de 14 y 19 puntos porcentuales, respectivamente, permanecen no explicados después de introducir controles demográficos y laborales.