Assessment of physical activity
Physical activity was assessed by the New Zealand Physical Activity Questionnaire – Short Form (NZPAQ-SF)MET values and formula for calculation of MET-minutes were assessed and used as below:
Walking MET-minutes/week at work = 3⋅3 × walking minutes × walking days at work.Moderate MET-minutes/week at work = 4⋅0 × moderate intensity activity minutes × moderate intensity days at work.Vigorous MET-minutes/week at work = 8⋅0 × vigorous intensity activity minutes × vigorous.Total work MET-minutes/week = sum of walking + moderate + vigorous MET-minutes/week scores at work.