Gaining Optimism After Weight Loss Surgery (GOALS) II

Feasibility will be measured by examining the number of completed intervention sessions for individuals randomized to the PP-MI intervention. The intervention will be considered feasible if at least 7/10 sessions are completed, on average.

After each of the 10 weekly intervention sessions, participants will rate that week's PP and goal-setting topics on how easy they were to complete and how helpful they were. Ratings will be measured on a 10-point Likert scale (1=very difficult/not at all helpful, 10=very easy/very helpful). Ratings for each category (e.g., ease of PP exercises) will be averaged across the 10 sessions to calculate a single value for that participant. The intervention will be considered acceptable if average ease and utility ratings are at least 7/10.

We will use ActiGraph GT3X-BT accelerometers to objectively measure physical activity for 1 week at each assessment. MVPA will be measured in minutes/week.

Measured by Actigraph accelerometer, in number of steps per day.

Measured by Actigraph accelerometer, in minutes per day.

The positive affect items on the Positive and Negative Affect Schedule (PANAS), a well-validated scale used in other intervention trials and in patients with medical illnesses, will be used to measure positive affect (Range: 10-50). Higher scores indicate higher levels of positive affect.

The Life Orientation Test-Revised (LOT-R) is a well-validated 6-item instrument used to measure dispositional optimism (Range: 0-24). Higher scores indicate higher levels of optimism.

The Hospital Anxiety and Depression Scale (HADS)-depression subscale will be used to measure depression. This is a well-validated scale with few somatic symptom items that can confound mood/anxiety assessment in medically-ill patients (Range: 0-21). Higher scores indicate higher levels of depression.

The Hospital Anxiety and Depression Scale (HADS)-anxiety subscale will be used to measure anxiety. This is a well-validated scale with few somatic symptom items that can confound mood/anxiety assessment in medically-ill patients (Range: 0-21). Higher scores indicate higher levels of anxiety.

The Exercise Identity Scale (EIS) is a well-validated, 9-item measure that will be used to assess exercise identity (Range: 9-63). Higher scores indicate stronger exercise identity.

Self-efficacy will be measured using the General Self Efficacy scale (GSE), a validated measure of self-efficacy, given its links to improved adherence. The range for total scores is 10-40 with higher scores indicate greater self-efficacy. Mean total scores are reported.

Exercise-specific self-efficacy will be measured by the Self-Efficacy for Exercise scale (SEE), a validated scale which assesses self-efficacy for exercise (Range: 0-90). Higher scores indicate higher self-efficacy.

The Weight Bias Internalization Scale - Modified (WBIS-M) is a well-validated, 11-item measure that will be used to measure internalized weight bias (Range: 1-7). Higher scores indicate greater internalized weight bias.

The Bariatric Surgery Self-Management Questionnaire (BSSQ) is a validated measure that will be used to assess adherence to diet and vitamin recommendations after bariatric surgery. The range of scores is 0-66 with higher scores indicating better adherence to diet and vitamin recommendations. Mean total scores are reported.

The International Physical Activity Questionnaire (IPAQ) - Short Form is a well-validated 7-day physical activity recall assessment for physical activity. Activity will be measured by the number of MET-minutes of moderate or greater activity per week.

Body mass index (kilograms/meters squared) will be calculated with body weight and height measured on a calibrated scale.

Blood pressure will be measured by a nurse.

The 6 Minute Walk Test is a sub-maximal exercise test used to assess aerobic capacity and endurance. The distance covered over a time of 6 minutes is used as the outcome by which to compare changes in performance capacity.

The measurement of body fat in relation to lean body mass will be measured using bio-electrical impedance.

Hemoglobin A1C will be measured via blood draw.

Lipids (HDL, LDL, Triglyceride) will be measured via blood draw.

C-reactive protein will be measured via blood draw as a measure of inflammation.

Self-efficacy will be measured using the Physical Activity Enjoyment Scale (PACES), a validated measure of enjoyment during exercise. The range of total scores is 18-126 with higher scores indicating greater enjoyment during exercise. Mean total scores are reported.

Blood pressure will be measured by a nurse.

Lipids (HDL, LDL, Triglyceride) will be measured via blood draw.

Lipids (HDL, LDL, Triglyceride) will be measured via blood draw.