Physical activity
PA was measured by a pedometer (Yamax SW 200) worn for 7 consecutive days. The pedometer-determined measurements in this study were steps per day. Participants were instructed in person how to wear and use the pedometer. A web-based step diary, that is, a software programme useable from a computer, tablet or mobile, was used to record the number of steps taken each day together with wear time, cycling time and time spent in sports activities. At least four valid days defined as ≥10 h/d of wear, and steps between 100 and 50 000 steps/d of monitoring were required for an individual to be included in the analysis to assess the habitual level of PA. Average steps/d <1000 or >25 000 for a monitoring frame of 4–7 d were treated as outliers and were excluded unless the low or high daily step counts could be verified by low or high levels of daily ambulatory activity in the step diariesFurthermore, the background interview included questions on PA during leisure and on leisure time spent on MVPA during the last week from the validated Nordic Physical Activity Questionnaire (NPAQ)