The focus of this study is to examine the feasibility, acceptability, and preliminary impact of a customized, combined positive psychology and motivational interviewing (PP-MI) health behavior intervention in a group of patients with type 2 diabetes (T2D).
The investigators are proposing a study that will specifically and innovatively focus on the development of a novel positive psychology intervention that is adapted for patients with T2D. The MGH Diabetes Center and MGH primary care clinics will serve as the source of subjects for the study, with patients who have a diagnosis of T2D serving as potential subjects. The investigators will enroll 12 T2D patients, who will take part in an 16-week PP-MI health behavior intervention. In this project, the investigators plan to do the following: 1. Test a 16-week, telephone-delivered health behavior intervention utilizing PP exercises and systematic goal-setting in a brief, non-randomized, proof-of concept trial (N=12). 2. Determine whether this initial intervention is feasible in a small cohort of T2D patients. 3. Explore potential benefits of the intervention on outcomes of interest (e.g., optimism, positive affect). Baseline information about enrolled participants will be obtained from the patients, care providers, and the electronic medical record as required for characterization of the population. This information will include data regarding medical history (type 2 diabetes mellitus), current medical variables (conditions affecting physical activity), medications, and sociodemographic data (age, gender, race/ethnicity, living alone). Participants will undergo an initial screening visit during which they will meet with study staff in person. At this visit, study eligibility will be confirmed, and eligible and willing participants will be enrolled. Following enrollment, participants will complete self-report measures, and nurses in the Translational and Clinical Research Center will collect vital signs and draw blood for A1c. To ensure that participants have low baseline physical activity, they will then take home and wear accelerometers for 1 week. Participants will undergo a second in-person visit to confirm that participants are eligible to complete the program and--if so--to initiate the program. During this session, A1c and accelerometer data will be reviewed. Participants will be required to have an A1c value between 6.5% and 9%, unless they have had an eligible A1c level in the past 6 months, in which case their current A1c may be between 6% and 9.5%. Furthermore, participants must have low physical activity (\< 75 minutes of moderate or vigorous physical activity over the past week, measured by accelerometer) to continue in the program. Upon confirmation of eligibility, participants will begin the study intervention. During this second in-person visit, participants will receive a PP-MI treatment manual. For each session, a PP exercise will be described in the manual, with instructions and space to write about the exercise and its effects. Next, an MI section will outline specific MI-based topics (e.g., pros/cons, managing slips) and facilitate physical activity goal-setting. Interventionists will complete PP exercise 1 and MI session 1 together with participants to aid engagement. Interventionists will also explain/assign PP exercise 2 and discuss an MI-based activity goal matched to participants' stage of change and medical recommendations (and assign activity tracking). Participants will complete the remaining sessions (14 in total) by phone over the next 16 weeks. Phone sessions will last for approximately 30 minutes, with PP and physical activity assignments completed between phone sessions. PP and MI components will be delivered stepwise within sessions (rather than intertwined) based on our experience, participant feedback, and pilot work. If a week is missed, the session will not be skipped, but rather the intervention will be completed sequentially (with participants who miss weeks then missing the final sessions), with the exception of the final visit, which skip to Planning for the Future in all cases. Participants will undergo an in-person follow-up assessment at 16 weeks. At this session, participants will repeat self-report assessments that were administered at baseline. Vital signs and a blood sample will again be collected at this final in-person visit. Finally, prior to this assessment, participants will wear an accelerometer for an additional 7 days to measure moderate or vigorous physical activity. The investigators will allow a window of 3 weeks, to allow flexibility of scheduling such in-person appointments in Boston (and to allow coordination with other medical visits at MGH) while maintaining integrity of study findings.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
12
The positive psychology exercises include 3 modules: Gratitude-based activities, Strength-based activities, and Meaning-based activities. Various goal setting exercises will appear in each of the 14 study sessions.
Massachusetts General Hospital
Boston, Massachusetts, United States
Feasibility of recruitment procedures
Feasibility will be measured by rates of enrollment per month.
Time frame: Change between baseline and 16 weeks
Feasibility of study procedures
Feasibility will also be measured by rates of dropout (%of total enrolled).
Time frame: Change between baseline and 16 weeks
Feasibility of intervention exercises
Feasibility of intervention exercises will be measured by rates of completion of exercises.
Time frame: Change between baseline and 16 weeks
Ease of intervention
Ease of the intervention will also be measured by patient rating of the ease of PP-MI sessions on a 10-point Likert scale.
Time frame: Change between baseline and 16 weeks
Utility of intervention
Utility of the intervention will also be measured by patient rating of the utility of PP-MI sessions on a 10-point Likert scale.
Time frame: Change between baseline and 16 weeks
Moderate-Vigorous Physical activity
Physical activity changes will be measured by MVPA in mean minutes per day.
Time frame: Change between baseline and 16 weeks
Sedentary Time
Sedentary time will be measured in mean minutes per day.
Time frame: Change between baseline and 16 weeks
Changes in PANAS Scores
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
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 HF, will be used to measure positive affect.
Time frame: Baseline and 16 weeks
Changes in LOT-R Scores
Life Orientation Test-Revised is a well-validated 6-item instrument used to measure dispositional optimism.
Time frame: Baseline and 16 weeks
Changes in HADS Scores
The Hospital Anxiety and Depression Scale will be used to measure depression and anxiety. This is a well-validated scale with few somatic symptom items that can confound mood/anxiety assessment in medically-ill patients.
Time frame: Baseline and 16 weeks
Changes in SEE Scores
The Self-Efficacy for Exercise scale will be used to identify factors that may affect participation in exercise.
Time frame: Baseline and 16 weeks
Changes in RS Scores
The Resilience Scale will be used to examine the impact of the intervention on resilience.
Time frame: Baseline and 16 weeks
Changes in MSPSS Scores
The Multidimensional Scale of Perceived Social Support will be used to assess the intervention's impact on perceived social support.
Time frame: Baseline and 16 weeks
Changes in SDSCA Scores
The Summary of Diabetes Self-Care Activities will be used to evaluate overall diabetes self-care (e.g., diet, medication, foot care).
Time frame: Baseline and 16 weeks