2.4.2. Physical Activity (PA)
The International Physical Activity Questionnaire (IPAQ)—short form was used as the subjective measure of physical activity. A total of 7 items were structured to provide separate METs (min/week) on walking; moderate-intensity activity; vigorous-intensity activity, total physical activity, and time spent on sitting (walking MET—minutes/week = 3.3 × walking minutes × walking days; moderate MET—minutes/week = 4.0 × moderate-intensity activity minutes × moderate days; vigorous MET—minutes/week = 8.0 × vigorous-intensity activity minutes × vigorous-intensity days). This questionnaire has demonstrated acceptable reliability and validity on the total score in previous studies [