Tailored Lifestyle Intervention in Obese Adults Within Primary Care Practice - Choose to Lose (CTL)

Memorial Hospital of Rhode Island

Status: Completed

Conditions: Overweight and Obesity

Treatments: Behavioral: Intervention; Behavioral: Control

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT01542671

5R18DK079880 (U.S. NIH Grant/Contract)

09-32

Details and patient eligibility

About

The primary objective of the study is to evaluate the effectiveness of tailored lifestyle intervention in primary care by comparing changes in the primary measure of weight and body mass index (BMI) and secondarily: physical activity (PA), fat calories consumed, and fruit/vegetable servings within the two arms (intervention and control) of the study. It is hypothesized that the intervention cohort will demonstrate greater reductions in body weight, body neglect, and fat calories consumed and greater increases in physical activity and fruits/vegetable servings after two years compared to the control cohort. The study also aims to evaluate and compare the cost of intervention for purpose per each unit of measure lost between the two arms of the study as a secondary objective. The cost of intervention will be evaluated as it relates to study replication.

Full description

The study will translate and evaluate previously successful weight loss and physical activity studies into a primary care setting in terms of efficacy and cost effectiveness. Patients are recruited by their primary care physicians office and screened for participation and contraindications by phone. A screening visit with a run-in period of food and exercise log adherence is performed. All participants have meetings with a Lifestyle Counselor to set nutritional and lifestyle goals and an introduction to weight loss techniques at baseline, 6 months, and 12 months. A structured eating plan will be given at the baseline visit. Participants at the baseline visit are randomized to either the intervention and control groups. During the first year, intervention participants will receive monthly motivational phone calls from their lifestyle counselor to assess their progress and help navigate the lifestyle changes. Food and exercise logs are reviewed frequently and written feedback give to each interventional participant. Intervention participants also receive weekly mailings focusing on weight loss, physical activity and healthy eating, and four tailored mailings based upon information gained through contact with the lifestyle counselor. Intervention participants will also receive 2 informative DVDs during the first year. Control participants receive 2 NIDDK informational handouts on weight loss. For the second year of the study focuses on maintenance. Intervention participants receive reduced mailings of 2 per month for 6 months and then once a month until the end of one year. Intervention participants receive one additional motivational phone call at 13 months if they have not reached their weight loss goal and also receive 2 more informative DVDs. The control participants will receive 3 informational NIDDK mailings. The two arms of the study will be compared using the critical outcome measures (weight loss, PA, fat calories & vegetable/fruit servings consumed) and secondary outcome measures (waist and hip circumference,BP,Heart rate) for weight loss efficacy. We will also evaluate the cost-effectiveness for dissemination as a PCP weight loss program in addition to the overall cost-effectiveness for the participant in terms of money spent and adverse events related to the lifestyle change.

Enrollment: 200 patients

Sex: All

Ages: 18 to 80 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Male/female ≥18 and <80 years old
• Available for this research project for the entire 24-month study period
• Able to read and speak English
• Can provide informed consent

Exclusion criteria

• Diagnosed or hospitalization for active CVD disease in the past 6 months including: CHD or history of coronary revascularization procedure (e.g. angioplasty, bypass graft surgery), Stroke, Peripheral Vascular Disease, Heart Failure, Deep Vein Thrombosis (DVT)
• Unstable psychiatric condition
• History of a significant orthopedic limitation or other conditions that make exercise dangerous or extremely difficult
• Limited physical activity by a physician to less than a brisk walk
• Another family member in the study
• Limited prescribed diet (e.g. gluten free diet)
• Present treatment for an eating disorder
• Underwent treatment for cancer in the past 5 years
• Dialysis
• Poorly controlled diabetes (HgbA1c > 10) or hospitalized in past 6 months for poorly controlled diabetes
• Chronic steroid therapy
• Participant requesting surgical treatment of obesity or weighing over 400 lbs.
• Major surgery in the past month
• Participating in another clinical trial with regards to obesity or physical activity

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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200 participants in 2 patient groups, including a placebo group

Intervention

Experimental group

Description:

Lifestyle counseling at baseline, six, twelve months; Food and exercise log recording and feedback, motivational phone calls monthly for 12 months, 4 tailored mailings on lifestyle change, and weekly mailings on weight loss, exercise, and healthy eating for first 12 months. Maintenance mailings biweekly for six months and then monthly during the second year.

Treatment:

Behavioral: Intervention

Control

Placebo Comparator group

Description:

Lifestyle counseling at baseline, six and twelve months similar to intervention group, and infrequent non-tailored pamphlets.

Treatment:

Behavioral: Control