Table 2 Factor loadings for items included in the 5 factor model

 CET9 If I cannot exercise I feel low or depressed.

 CET 10 I feel extremely guilty if I miss an exercise session.

 CET 11 I usually continue to exercise despite injury or illness, unless I am very ill or too injured.

 CET 15 If I miss an exercise session, I will try and make up for it when I next exercise.

 CET 16 If I cannot exercise I feel agitated and/or irritable.

 CET 20 If I cannot exercise I feel angry and/or frustrated.

 CET 22 I feel like I’ve let myself down if I miss an exercise session.

 CET 23 If I cannot exercise I feel anxious.

 CET 2 I exercise to improve my appearance.

 CET 6 If I feel I have eaten too much, I will do more exercise.

 CET 8 I do not exercise to be slim.

 CET 13 I exercise to burn calories and lose weight.

 CET 18 If I cannot exercise, I worry that I will gain weight.

 CET 1 I feel happier and/or more positive after I exercise.

 CET 4 I feel less anxious after I exercise.

 CET 14 I feel less stressed and/or tense after I exercise.

 CET 17 Exercise improves my mood.

 CET 24 I feel less depressed or low after I exercise

 CET 5 I find exercise a chore.

 CET 12 I enjoy exercising.

 CET 21 I do not enjoy exercising.

 CET 3 I like my days to be organised and structured of which exercise is just one part.

 CET 7 My weekly pattern of exercise is repetitive.

 CET 19 I follow a set routine for my exercise sessions e.g. walk or run the same route, particular exercises, same amount of time, and so on.