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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03998878
Other study ID # 1903480167
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date August 8, 2019
Est. completion date December 16, 2021

Study information

Verified date December 2021
Source University of Arizona
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This project will test 3 methods of dietary changes in a weight loss clinic. Participants will be randomized to one of 3 arms: low-carbohydrate diet, intermittent energy restriction, or Hunger Training. A maximum of 30 participants will be assigned to each arm. The goal of the proposed study is to determine the feasibility, early efficacy, and patient satisfaction of each weight loss modality in a population of patients seeking care at a weight loss clinic.


Description:

Adult obesity, a common condition in the United States, is a well-established risk factor for the development of chronic diseases, including diabetes, heart disease, hypertension, and many types of cancer. However, research has not determined what type of diet is best for reducing weight and achieving optimal health outcomes. In this randomized trial, participants seeking care at a weight loss clinic will be assigned to one of three diets: low-carbohydrate, intermittent energy restriction, or Hunger Training. On the low-carbohydrate diet, participants will be instructed to consume less than 30 grams of carbohydrates per day. The intermittent energy restriction protocol will require participants to choose 2 non-consecutive days per week in which they will consume 500-650 calories. Hunger Training is a relatively new approach that involves teaching people to monitor their hunger symptoms and blood glucose, and to eat only when blood glucose is below a certain level. To our knowledge, these weight loss modalities have not been compared in a single, clinical study. The goal of the proposed study is to determine the feasibility, early efficacy, and patient satisfaction of each weight loss modality in a population of patients seeking care at a weight loss clinic. The goal will be achieved though the successful completion of the following aims: Aim 1: To determine the feasibility of recruiting, retaining and maintaining the adherence participants in a randomized clinical trial testing 3 weight loss modalities. Aim 2: To examine and compare the effect of 3 weight loss modalities on changes in anthropometric measures and metabolic and cancer-related health markers. Aim 3: To evaluate and compare patients' perceived satisfaction with each weight loss modality.


Recruitment information / eligibility

Status Completed
Enrollment 9
Est. completion date December 16, 2021
Est. primary completion date December 16, 2021
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Overweight/obese as indicated by BMI >27 - Age = 18 - HbA1C <8.0 - Fluent in English Exclusion Criteria: - Cognitive state that precludes informed consent or adherence to study protocols - Pregnant, breast-feeding, or planning to become pregnant within 6 months - A1C = 8.0 - Taking an anti-obesity medication - Insulin-dependence - prior metabolic surgery - current laparoscopic adjustable gastric band ("lap band") use - Experience of substantial weight changes (±5 kg or ±10 lbs) in the past 3 months

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
Low-Carbohydrate Diet
Participants will be instructed to follow a low-carbohydrate diet.
Intermittent Energy Restriction
Participants will be instructed to follow intermittent energy restriction.
Hunger Training
Participants will be instructed to follow Hunger Training.

Locations

Country Name City State
United States University of Arizona Tucson Arizona

Sponsors (1)

Lead Sponsor Collaborator
University of Arizona

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Rate of Recruitment Feasibility of recruiting participants into a randomized dietary intervention in a clinic setting as measured by the total number of individuals who are screened as eligible and enrolled into the study 1 year
Primary Rate of Retention Feasibility of retaining participants in a randomized dietary intervention in a clinic setting as measured by the number of participants completing all study visits 1 year
Primary Adherence to the Intervention Feasibility of maintaining participant adherence in a randomized dietary intervention in a clinic setting will be measured by attendance at scheduled clinic visits 1 year
Primary Change in Weight Participant weight will be measured baseline to 3 months
Primary Change in BMI Participant BMI will be measured baseline to 3 months
Primary Change in HbA1c Participant HbA1c will be measured baseline to 3 months
Primary Change in Fasting Glucose Participant fasting glucose will be measured baseline to 3 months
Primary Change in Fasting Insulin Participant fasting insulin will be measured baseline to 3 months
Primary Change in Total Cholesterol Participant total cholesterol will be measured baseline to 3 months
Primary Change in Triglycerides Participant triglycerides will be measured baseline to 3 months
Primary Change in High Density Lipoprotein (HDL) Participant HDL will be measured baseline to 3 months
Primary Change in Low Density Lipoprotein (LDL) Participant LDL will be measured baseline to 3 months
Primary Change in C-Reactive Protein (CRP) Participant CRP will be measured baseline to 3 months
Primary Change in Insulin-like Growth Factor 1 (IGF-1) Participant IGF-1 will be measured baseline to 3 months
Primary Change in Insulin-like Growth Factor 2 (IGF-2) Participant IGF-2 will be measured baseline to 3 months
Primary Change in Insulin-like Growth Factor Binding Protein 3 (IGFBP-3) Participant IGFBP-3 will be measured baseline to 3 months
Primary Change in Leptin Participant leptin will be measured baseline to 3 months
Primary Change in Adiponectin Participant adiponectin will be measured baseline to 3 months
Primary Participant Satisfaction Participants will complete a questionnaire at the end of the study to assess the acceptability of and satisfaction with the weight loss diet intervention they received. We will assess overall satisfaction, enjoyment, likeliness to recommend, and ease of following the diet. Aggregated scores will be compared across weight loss modality. 3 months
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