2.3. The International Physical Activity Questionnaire—Short Form (IPAQ-SF)

The IPAQ-SF was used to assess physical activity over the previous seven days. The IPAQ-SF is composed of seven questions from four domains of physical activity, including vigorous and moderate physical activity, walking physical activity, and sitting time. A weighted total from vigorous physical activity, moderate physical activity, and walking physical activity is calculated to produce a total amount of physical activity in MET-min/week (MET-min/week = MET level × minutes of activity/day × days per week). MET levels are weighted based on intensity of activity. IPAQ-SF was validated to evaluate physical activity in individuals 15–69 years old [26,27] and in several neuromuscular populations, including Charcot–Marie–Tooth disease and limb–girdle muscular dystrophy [28].