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Table 1 Description and psychometric properties of hypothesized mediator scales

From: Social cognitive theory mediators of physical activity in a lifestyle program for cancer survivors and carers: findings from the ENRICH randomized controlled trial

Construct Intervention strategies Behavior change techniques from the CALO-RE taxonomy [42] Description of scale Range; number of items Sources Cronbach alpha α
Behavioral goal • Plan home walking program with step count goals
• Revise step count goals
• Set goal to reduce sitting time
• Goals about how often to walk
• How to revise and set new goals
• Resistance training behavior contract
• How to stay on track after ENRICH by setting goals
BCT#5-Goal setting (behavior); BCT#6-Goal setting (outcome); BCT#7–Action planning; BCT#10–prompt review of behavioral goals; BCT #11-prompt review of outcome goals. Scale from 0-100 % 0–100 %; 1 item Courneya, et al., 2000 [75] N/A
Participants were asked to indicate “How likely is it that you will do regular PA within the next eight weeks?”
Self-efficacy • Resistance training handbook – goal setting and self-monitoring
• Know how to use Gymstick™ and participated in resistance training session
• How to modify resistance training programs as fitness improves
• Learn new Gymstick™ exercises
• Review resistance training progress
• Participated in resistance training fitness circuit
• How to plan a home walking program
• Strategies to increase exercise adherence
• Devised personal home walking program to carry out upon ENRICH completion
• Tips to keep motivated
BCT#16–prompt self-monitoring of behavior; BCT#17-prompt self-monitoring of behavioral outcome; BCT#21–provide instruction on how to perform the behavior; BCT#22-model/demonstrate the behavior; BCT#26–prompt practice; BCT#27–use of follow-up prompts. 5-point Likert format:
1 = not at all confident to 5 = extremely confident.
Participants were asked to rate their confidence that they could participate in regular PA over the next eight weeks when:
Eg. When I am in a bad mood or feeling depressed….
1–5; 9 items Plotnikoff, et al., 2001 [76] 0.90
Outcome expectations • Familiar with Rate of Perceived Exertion (RPE) scale
• Participated in resistance training fitness circuit
• Group discussion on resistance training progress and training adherence
• Use testing and assessment for motivation and chart improvement
• Record your activity and thoughts before during and after exercise to help improve adherence and barriers
• Use training diaries to record PA and exercise sessions
BCT#16–prompt self-monitoring of behavior; BCT#17–prompt self-monitoring of behavioral outcome; BCT#23–teach to use prompts/cues; BCT#24–environmental restructuring; BCT#28–facilitate social comparison; BCT#29–plan social support/social change; BCT#31–prompt anticipated regret; BCT#35–relapse prevention/coping planning. 5 point Likert scale:
1 = strongly disagree to 5 = strongly agree.
Participants were asked to select how much they agree with the 5 statements that participating in regular PA over the next eight weeks would for them:
Eg. Reduce tension or manage stress
1–5; 5 items Plotnikoff, et al., 2001 [76] 0.91
Impediments • Reflect on diaries and identify solutions to barriers
• Strategies to increase exercise adherence
• What are the barriers people are facing?
• Resistance training behavior contract
BCT#8–barrier identification/problem solving; BCT#18–prompting focus on past success. 5 point Likert scale:
1 = strongly disagree to 5 = strongly agree.
Participants were asked to select how much they agree with the 5 statements that participating in regular PA over the next eight weeks would for them:
Eg. Take too much of my time.
1–5; 5 items Plotnikoff, et al., 2001 [76] 0.72
Social support • Inclusion of partners/carers in attending ENRICH program
• Group discussion and brainstorming
• Face-to-face group sessions
• Encouraged to use social support and to do PA together (to keep motivated)
BCT#29–plan social support/social change. 5 point Likert format:
1 = Not at all to 5 = very much.
Participants are asked whether over the next eight weeks people in their social network are likely to help them participate in regular PA, and whether they feel that someone in their social network will provide the support they need in order to be regularly physically active.
1–5; 2 items Courneya, et al., 2000 [75] 0.91