Estética del rock

El objetivo del presente artículo es el de analizar la estética del Rock en términos de la experiencia que ofrece este género musical. En primer lugar se construirá una relación entre el Nacimiento de la tragedia de Nietzsche y el surgimiento del Rock, bajo la premisa de que el origen del Rock es eminentemente dionisíaco; luego se mostrará una forma de la experiencia en la vida cotidiana de quien escucha Rock, en donde se da cuenta de la necesidad de expresar los sentimientos de placer y displacer en el individuo; por último, se verá el concierto como expresión última del Rock, expresión que se enmarca dentro de la característica de una celebración-ritual que guarda semejanzas con la tragedia griega. Estos elementos terminan por dar cuenta de una forma de ver el mundo en la que se constituye la individualidad dentro de la comunidad electiva

LMS tables for waist circumference and waist-to-height ratio among Colombian children and adolescents: The FUPRECOL study

Background: Indices predictive of central obesity include waist circumference (WC) and waist-to-height ratio (WHtR). The aims of this study were 1) to establish a Colombian youth smoothed centile charts and LMS tables for WC and WHtR and 2) to evaluate the utility of these parameters as predictors of overweight and obesity. Method: A cross-sectional study whose sample population comprised 7954 healthy Colombian schoolchildren [boys n=3460 and girls n=4494, mean (standard deviation) age 12.8 (2.3) years old]. Weight, height, body mass index (BMI), WC and WHtR and its percentiles were calculated. Appropriate cut-offs point of WC and WHtR for overweight and obesity, as defined by the International Obesity Task Force (IOTF) definitions, were selected using receiver operating characteristic (ROC) analysis. The discriminating power of WC and WHtR was expressed as area under the curve (AUC). Results: Reference values for WC and WHtR are presented. Mean WC increased and WHtR decreased with age for both genders. We found a moderate positive correlation between WC and BMI (r= 0.756, P < 0.01) and WHtR and BMI (r= 0.604, P < 0.01). The ROC analysis showed a high discrimination power in the identification of overweight and obesity for both measures in our sample population. Overall, WHtR was slightly a better predictor for overweight/obesity (AUC 95% CI 0.868-0.916) than the WC (AUC 95% CI 0.862-0.904). Conclusion: This paper presents the first sex- and age-specific WC and WHtR percentiles for both measures among Colombian children and adolescents aged 9–17.9 years. By providing LMS tables for Latin-American people based on Colombian reference data, we hope to provide quantitative tools for the study of obesity and its comorbidities.