In a 6-week experimental design, up to 90 adult couples in which one partner has Type 2 Diabetes (T2D) will be randomly assigned to either the collaborative implementation intentions (Collaborative IIs), the Individual Implementation Intentions (Individual IIs) condition, or the control condition. As this is a pilot study, randomization for the experimental groups vs the control groups will occur at a 2:1 ratio. Thus, the experimental conditions will contain up to 36 participants and the control condition will contain up to 18 participants. Adults with T2D who are living with a romantic partner, not meeting current physical activity guidelines but able and willing to begin a new physical activity (PA) routine and their partners will be assessed at baseline, 3 weeks and 6 weeks after the experimental manipulation. Partners will report on their own investment in the patient's goal and patients will report on their own PA self-efficacy. Patient's PA will be measured through self-report, partner report and accelerometers for a week prior to each survey assessment. These specific aims are planned: AIM 1: Determine whether collaborative IIs for patient's PA lead to a greater increase in partner investment in partners of adults with T2D than do individual IIs or control. AIM 2: Determine whether collaborative IIs for patient's PA lead to a greater increase in patient PA self-efficacy in adults with T2D than do individual IIs or control. AIM 3: Determine whether collaborative IIs for patient's PA lead to a greater increase in patient PA in adults with T2D than do individual IIs or control.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
80
With spouse/romantic partner
Without spouse/romantic partner
University of Colorado Denver
Denver, Colorado, United States
Self-Reported Physical Activity via IPAQ
Participants will self-report their physical activity over the past week using the International Physical Activity Questionnaire (IPAQ)
Time frame: Baseline, 3 weeks, 6 weeks
Objective Physical Activity via accelerometer
Participants will wear Actigraph Accelerometers
Time frame: Basline, 6 weeks
Physical Activity Self-Efficacy via a self efficacy scale
Physical activity self-efficacy will be measured using the self-efficacy for exercise scale (SEE; Resnick \& Jenkins, 2000). This 9-item, self-report scale assesses participant's confidence that they could exercise three times per week for 20 minutes under various circumstances (e.g. "you had to exercise alone"; "you felt tired"). Respondents are asked to rate items on a scale from 1, (not at all confident), to 10 (extremely confident).
Time frame: Baseline, 3 weeks, 6 weeks
Physical Activity Partner Investment Scale
The Physical Activity Partner Investment Scale assesses the degree to which the partner in a couple defines the patient engaging in regular physical activity as a shared responsibility as well as the degree to which they are taking action to address barriers to the patient engaging in physical activity . The 9 items selected were modified to be specific to engaging in regular physical activity. Participants are asked to rate their agreement each item on a scale from 1 (strongly disagree) to 7 (strongly agree). Example items include "If/when my partner decides to engage in regular physical activity , the responsibility will be his or hers alone.", "My partner and I are able to have useful discussions about how to engage in regular physical activity ." and "In the long run, my partner and I are able to work together toward helping one or both of us maintain a regular physical activity routine".
Time frame: Baseline, 3 weeks, 6 weeks
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