Variable | Number of items / response format | Example of sample items | Original reference source on which items were based | Cronbach`s alpha |
---|---|---|---|---|
 |  |  |  | Baseline, FU1 and FU2 (range) |
Social support |  | Have your family/friends… | [47] |  |
- family | 6 / 1 (never) - 5 (very often) | … Encouraged you to be physically active? |  | 0.85-0.87 |
- friends | 6 / 1 (never) - 5 (very often) | Â | Â | 0.87-0.88 |
Self-efficacy | 7 / 1 (not at all confident) - 7 (very confident) | I am confident I can participate in planned physical activity when… I am tired | [48] | 0.87-0.89 |
Outcome expectancies | 6 / 1 (unlikely) – 7 (very likely) | If I am regularly physically active in the next month… Iwill get in better shape |  | 0.85-0.89 |