[Short version of the Minnesota Leisure Time Physical Activity Questionnaire for general population: MLTPAQ 9+2]

The aim of this study was to propose a short version of the Minnesota Leisure Time Physical Activity Questionnaire (MLTPAQ) to estimate the prevalence of physical inactivity. MLTPAQ was included in the Galician Risk Behavior Information System survey. Each activity was associated with an intensity code, in multiples of 1 MET, and a weekly energy expenditure of less than 1000kcal was defined as physically inactive. The prevalence of physical inactivity was calculated with the complete and short list (nine activities are performed by at least 10% of the population). The complete and short list classify physical inactivity with an agreement of 98,8%. Misclassified people do one or two more activities, so two open response items were included. This study proposes a short version (9+2 items), suitable for inclusion in a general adult population health survey.