2.3.1. Demographic Data and Physical Activity
At all three measurements sessions, demographic data were collected with a questionnaire. The questionnaire was also used to assess the physical activity of the participants. The participants were asked how many minutes per week they performed moderate physical activities, vigorous physical activities, and strengthening exercises in the last six weeks. The six-week period was chosen because this was the time period in between the measurements. Furthermore, they were asked how much they enjoy physical activity and sports, in general, on a scale from 1 to 4 (1—I do not enjoy physical activity and sports; 4—I enjoy physical activity and sports very much).