Table 3.

Measures of change in targeted behavioral mediators of the study intervention

Proposed Mechanism	Measurement Plan
1. Desire for physical competence	1. Desire for Physical Competence Questionnaire
2. Self-efficacy for functional performance	2. Walking Efficacy Questionnaire
3. Satisfaction with physical function	3. Physical Function Satisfaction Questionnaire
4. Efficacy for barriers to exercise	4. Barriers Efficacy Questionnaire
5. Acceptance of exertional leg pain	5. Pain Perception Questionnaire
6. Control for functional independence	6. Beliefs about Physical Activity Questionnaire