*2.4. Scoring Protocol*

Based on the well-known concept of metabolic equivalent (MET), the total weekly PA level, expressed as energy expenditure (MET-min/week), was calculated [34]. Consequently, the total weekly energy expenditure (MET-min/week) was estimated according to the specific metabolic equivalent (MET) values for each category of PA (3.3 MET for walking, 4 MET for moderate-intensity PA, and 8 MET for vigorous-intensity PA) [35–37]. The following formula was used to calculate the total weekly energy expenditure (METmin/week): *total weekly energy expenditure (MET-min/week) = MET x duration of PA type (minutes) x frequency.* All calculations were performed in accordance with the specifications provided elsewhere [35–37], and also following the "Guidelines for Data Processing and Analysis of the International Physical Activity Questionnaire (IPAQ)—Short and Long Forms" (http://www.ipaq.ki.se (accessed on 15 September 2020)) [38].

Furthermore, following the IPAQ guidelines for scoring protocol (http://www.ipaq.ki. se (accessed on 15 September 2020)) [38], according to the total weekly energy expenditure (MET-min/week) from all types of PA, participants were assigned to one of the following categories: (1) low activity (<600 MET-min/week), (2) moderate activity (≥600 METmin/week), and (3) high activity (≥3000 MET-min/week).
