Item generation
An initial pool of 30 items was derived from AMS (Vallerand et al., 1992) and SRQ (Ryan &
Connell, 1989) items, the wording of which were modified to reflect reasons for exercise. Items were
scored on a five point Likert-type scale ranging from not true for me (0), through sometimes true for
me (2), to very true for me (4).