Introduction: Obesity is a major public health problem and adopting healthy lifestyle habits, while effective, is challenging in real-world settings. Culinary coaching is a behavioral intervention that aims to improve nutrition and overall health by facilitating home cooking through an active learning process that combines culinary training and health coaching. Our goal is to evaluate whether a culinary coaching telemedicine program (twelve 30-minute sessions) will significantly improve outcomes among subjects with overweight or obesity. General hypothesis: A culinary coaching telemedicine program will result in significant weight loss, and improvement in culinary attitude and self-efficacy, nutritional intake, and metabolic outcomes. Methods: This is a two-site, 36-month randomized controlled trial in which study participants between the ages of 25 to 70, with 27.5 ≤ BMI ≤ 35 Kg/m2 will be randomly assigned to nutritional counseling combined with a structured culinary coaching program or to nutritional counseling group (18 intervention, 18 control at each site). Intervention will include a 3-month culinary coaching telemedicine program with outcome data collected periodically for 12 months. The pre-defined primary outcome is body weight loss at 6 months, and secondary outcomes include change in body weight and composition at 1 year, as well as culinary attitudes and self-efficacy through a validated questionnaire, nutritional intake, lipid profile, blood pressure, and HgA1c (glycated hemoglobin); and participants' perception of the program. Potential impact: The investigators believe that this program has a potential to be a viable tool in promoting effective and scalable home cooking interventions aimed at improved nutrition and health outcomes in overweight and obesity.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
75
Twelve weekly one-on-one 30-minute tele-sessions through video conference. At the first session, subjects identify their vision regarding home cooking and 3-month goals. During each subsequent meeting, subjects will review their progress towards reaching the prior week's culinary goals and identify goals for the coming week, using a self-discovery process. When patients detect a new culinary skill that is necessary for their progress, s/he will either be taught through discussions or referred to active learning from a Culinary Resource Center.
Two 30-minute nutritional counseling sessions
Spaulding Rehabilitation hospitle
Charlestown, Massachusetts, United States
Sheba Medical Center
Ramat Gan, Israel
Body weight at 6 months
5% decrease in body weight (kg) in the intervention arm as compared to control. measured by a registered dietitian.
Time frame: Six months
Body weight
Body weight (kg), measured by a registered dietitian
Time frame: Body weight will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Culinary attitude & self-efficacy
Culinary attitudes and self-efficacy will be evaluated by the Cooking With a Chef (CWC) Instrument. This is a 22-item self-administered Likert scale questionnaire that generates three subscales: 1) the cooking techniques and meal preparation self-efficacy subscale (14 items; 1 - not al all confident; 5- extremely confident; sub-scale range 14-70), 2) the negative cooking attitudes subscale (4 items; 1 - strongly disagree; 5 - strongly agree; sub-scale range 4-20), and, 3) the self-efficacy to consume fruit and vegetables subscale (5 items; 1 - not al all confident; 5- extremely confident; sub-scale range 5-25).
Time frame: Culinary attitude & self-efficacy will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Nutritional intake
Nutritional intake will be evaluated by a 4-day food record. Intake will be analyzed for its caloric content (kcal), saturated fats(g), trans fats(g), legumes (g), fruits (g), red and processed meat (g), sugars(g), processed food(g), vegetables(g), soft drinks(g), fish(g), whole grain(g), refined grain(g), and monounsaturated fat-saturated fat ratio. Vegetables, legumes, fruits, nuts, whole grains, fish, monounsaturated fat-saturated fat ratio, alcohol, and meat will be aggregate to report Mediterranean index in points (1-9))
Time frame: Nutritional intake will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Adherence to Mediterranean Diet
Adherence to Mediterranean Diet will be evaluated by the validated 14 items Questionnaire of Mediterranean Diet Adherence, extracted by a dietitian from a 4-day food record (0 - low adherence; 14 - high adherence)
Time frame: Nutritional intake will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Consumption of ultra-processed
Consumption of ultra-processed food will be evaluated by the NOVE food classification, extracted by a dietitian from a 4-day food record (unprocessed or minimally processed foods (g), processed culinary ingredients (g), processed foods (g), ultra processed foods (g))
Time frame: Nutritional intake will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Blood pressure
blood pressure (both systolic and diastolic), measured in a seated position by a nurse using a sphygmometer
Time frame: Blood pressure will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Lipid profile
Lipid profile (total cholesterol, HDL-cholesterol, LDL-cholesterol, non-HDL cholesterol and triglycerides), measured from a blood sample drawn
Time frame: Lipid profile will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
HbA1c
HbA1c, measured from a blood sample drawn
Time frame: HbA1c will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Lean body mass
Lean body mass (g) will measured using Bone Densitometry
Time frame: Lean body mass will be obtained at baseline, and at 6 months after the beginning of the intervention
Total fat mass
Total fat mass (g, %fat) will measured using Bone Densitometry
Time frame: Total fat mass will be obtained at baseline, and at 6 months after the beginning of the intervention
Trunk fat mass
Trunk fat mass (g, %fat) will measured using Bone Densitometry
Time frame: Trunk fat mass will be obtained at baseline, and at 6 months after the beginning of the intervention
Fat distribution
Fat distribution will measured using Bone Densitometry. Measurements includes: android fat mass (g, %fat) and gynoid fat mass (g, %fat). Fat distribution will be extracted from Android/ Gynoid
Time frame: Body composition will be obtained at baseline, and at 6 months after the beginning of the intervention
Stages of change in relation to home cooking
Stages of change in relation to home cooking as assessed by the validated University of Rod Island Change Assessment (URICA) Scale. This is a 32-item self-administered Likert scale questionnaire (1 - strongly disagree; 5 - strongly agree). Minimum score - 32, maximum score - 160
Time frame: Stages of change will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Perceived Stress
Perceived Stress, evaluated by the validated Perceived Stress Scale. This is a 10-item self-administered Likert scale questionnaire (0 - never; 4 - very often). Minimum score - 0, maximum score - 10.
Time frame: Perceived stress will be obtained at baseline, after the intervention (at 3 months), 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Subject perceptions of the program
Information about subjects' experiences (e.g., feelings during the CCTP; difficulties, dilemmas, and challenges during the program) will be evaluated using a structured open-ended questionnaire.
Time frame: subjects perception of the program will be obtained using open ended questionnaires at baseline, 6 months after the beginning of the intervention, and 12 months after the beginning of the intervention
Subject perceptions of the program
Information about subjects' experiences (e.g., feelings during the CCTP; difficulties, dilemmas, and challenges during the program) will be evaluated using In-depth semi-structured interview.
Time frame: Subjects perception of the program will be obtained using in-depth interview after the intervention (at 3 months).
Coping with Stress
Overall resiliency to cope with the COVID-19 epidemic with be obtained through the Brief Resilient Coping Scale and copying strategies through the Brief Cope scale
Time frame: Coping with stress will be obtain through the 2 months of the pick COVID-19 epidemic
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