After completing T2 questionnaires, patients from the intervention group received the same nutrition guidelines [5] as the control-group participants, including suggestions about the recommended daily intake of saturated fat, examples of meals composition, and information about snacks (suggestions on reduction of fat intake and selection of healthy low-fat snacks when a patient craves for food between meals).
According to the intervention protocol, patients allocated to the intervention group (a) received instructions about what implementation intentions training should include; (b) completed the intervention form; (c) screened the intervention form together with an interviewer and received supportive feedback from an interviewer regarding their implementation intentions; and (d) were complimented for successfully generating implementation intentions. The participants were assisted individually, and the intervention lasted 10–20 min. The experimenters reported that the length of the intervention depended mostly on the time needed for its second and third components; patients who needed more time for the second part also needed more time for the third part.
The interviewers followed a standardized script