2.3.1. The Global Physical Activity Questionnaire (GPAQ)

The global physical activity questionnaire (GPAQ) [26] is a validated questionnaire to assess the level of PA of the adult population [27] and it is both easy and quick to compile. It allows for estimating the total sedentary time. The GPAQ is composed of 16-items, two choice answers (yes/no) about PA Level in different moments of the day, and its duration (hours/minutes), if required: the activities carried out during the work (P1–P6), the displacements from one place to another (P7–P9), the recreational activities (P10–P15) and the time employed in sedentary behaviors (P16). The results provided information on the sedentary status. The following equation was used to calculate total physical activity MET min/week: ((P2 × P3 × 8) + (P5 × P6 × 4) + (P8 × P9 × 4) + (P11 × P12 × 8) + (P14 × P15 × 4)). A score of less than 600 classifies the subject as inactive; a score of 600 or more classifies the subject as active.