Preferencias y demandas inmediatas que compiten con la actividad física en jóvenes: Desarrollo de instrumentos y propiedades psicométricas

objective: to develop and validate two instruments that measure competing preferences and demands that may interfere with physical activity of young students and to describe psychometric properties. methods: methodological design to develop the instruments measure preferences and demands. the analysis includes a sample of 477 students from upper public high schools and university students. systematic random sampling 1 in k (range 57-99) was used. results: the competing preferences instrument showed a cronbach alpha of .840 and the competing demands of .849. factor analysis, using principal components and varimax rotation revealed eight factors on that the preferences instruments, explaining 48.27% of total variance. five factors were extracted from the competing demands instrument, explaining 52.98% of the total variance. conclusions: results show preliminary validity, further testing is needed.