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NCT07789769 · Midwest Center for Metabolic and Cardiovascular Research

A Trial to Examine the Effects of a Weight Loss Program Emphasizing Protein, Dietary Fiber, and Exercise (30-30-30 Plan)

What this study is about

The purpose of this study is to learn whether following an online weight loss program with specific dietary and exercise goals (the 30-30-30 plan) can help improve weight loss and other markers of health when compared to an online weight loss program on its own.

View original scientific description

The purpose of this study is to learn whether following an online weight loss program with specific dietary and exercise goals (the 30-30-30 plan) can help improve weight loss and other markers of health when compared to an online weight loss program on its own.

Interventions

BEHAVIORAL

30-30-30 PFE Intervention

Interactive, online weight loss program adapted from the Rx Weight Loss (Rx WL) program with additional goals to consume ≥30 g protein/meal (P) + ≥30 g fiber/day (F) + ≥30 minutes of daily exercise (E).

BEHAVIORAL

Standard

Standard interactive, online weight loss program adapted from the Rx WL program.

Primary outcome measures

Body Weight

Time frame: From week 0 to week 24

Percentage change in body weight

Who can participate

This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.

Inclusion criteria

  • Individual is a male or female and 18 to 69 years of age, inclusive.
  • Individual has a self-reported desire to lose weight.
  • Individual has a body mass index (BMI) ≥27.0 and ≤45.0 kg/m2.
  • Individual has calculated energy needs of ≥1800 kcal/d per the Mifflin-St Jeor Equation, with an adjustment for energy expended in physical activity.
  • Individual must be fluent in speaking, reading, and writing in English.
  • Individual owns a Bluetooth-compatible smartphone capable of downloading a fitness tracking app, with a camera, and has reliable Wi-Fi connectivity at home.
  • Individual is judged by the Investigator to be in generally good health on the basis of medical history and screening assessments.
  • Individual is willing and able to undergo the scheduled study procedures, including participating in an interactive, online weight loss program for 6 months, attending virtual meetings, and striving to fulfill dietary and exercise goals.
  • Individual understands the study procedures and signs forms documenting informed consent to participate in the study and authorization for release of relevant protected health information to the study Investigator.

Exclusion criteria

  • Individual has a laboratory test result of clinical significance based on the judgment of the Principal Investigator or qualified designee. Individual is unwilling or unable to make dietary changes or increase physical activity.
  • Individual is unable to walk ¼ mile unaided without stopping.
  • Individual has a health condition (e.g., chronic pain, orthopedic limitations, heart problems) that would make weight loss or unsupervised exercise unsafe or infeasible. If an individual responds "yes" to any of the questions on the Physical Activity Readiness Questionnaire (PAR-Q) during visit 1, it is up to the Investigator's discretion to determine if unsupervised exercise is safe.
  • Individual habitually consumes \>9 g fiber per 1000 kcal per day based on their responses on the fiber intake questionnaire.
  • Individual habitually engages in ≥210 minutes per week of moderate-intensity or higher physical activity based on their responses on the Stanford 7-Day Physical Activity Recall (Appendix 3).
  • Individual regularly consumes (≥3 times per week) protein supplements, including collagen, within 30 days of visit 1.
  • Individual has a fasting blood glucose ≥126 mg/dL at screening or known type 1 or type 2 diabetes mellitus or use of any hypoglycemic medication (e.g., insulin, sodium glucose cotransporter-2 inhibitors, alpha glucosidase inhibitors, biguanides, thiazolidinediones, dipeptidyl peptidase-4 inhibitors, meglitinides, sulfonylureas, glucagon-like peptide-1 (GLP-1) receptor agonists, and GLP-1/glucose-dependent insulinotropic polypeptide inhibitors), except for metformin, within 30 days of visit 1.
  • Individual has self-reported or clinically diagnosed bipolar disorder, psychosis, or severe depression.
  • Individual has been hospitalized for a psychiatric disorder during the past 12 months.
  • Individual has lost ≥5% of their body weight in the previous 6 months.
  • Individual has participated in a structured weight loss program (e.g., commercial program) within 30 days prior to visit 1.
  • Individual has a cardiac defibrillator or pacemaker.
  • Individual has a clinically significant medical condition that, in the opinion of the Investigator, could interfere with the interpretation of the study results. Health conditions may include history or presence of clinically important gastrointestinal (e.g., inflammatory bowel disease, Crohn's disease, colitis, irritable bowel syndrome, celiac disease), cardiac (e.g., angina, bypass surgery, or myocardial infarction within previous 6 months), renal, hepatic, endocrine (e.g., Cushing's disease), pulmonary, biliary, pancreatic, or neurological disorders that may affect the participant's ability to adhere to the study protocol and/or affect study outcomes, in the judgment of the Investigator.
  • Daily use of tobacco/nicotine products (e.g., cigarette smoking, vaping, chewing tobacco) within 12 months of visit 1.
  • Use of hemp/marijuana products within 12 months of visit 1. Occasional use (e.g., once or twice a month) within 12 months of visit 1 is allowed but requires at least a 14-day washout prior to visit 2 (week 0) and the participant must be willing to refrain from use during the study.
  • Individual has uncontrolled hypertension (systolic blood pressure ≥160 millimeters of mercury (mm Hg) and/or diastolic blood pressure ≥100 mm Hg) at screening.
  • Individual has untreated thyroid disease or unstable use (initiation or change in dose) of thyroid hormone replacement medications within 6 months of visit 1.
  • Use of any prescription medication with known effects on appetite or weight (e.g., oral steroids, weight loss medications, etc.) within 30 days of visit 1. A stable dose of selective serotonin reuptake inhibitors ≥6 months is allowed.
  • Unstable use of any supplement known to affect energy metabolism within 30 days of visit 2.
  • Individual has a history of cancer in the prior 5 years, except non-melanoma skin cancer or carcinoma in situ of the cervix.
  • Individual has extreme dietary habits (e.g., ketogenic, very high protein, very high fiber, vegan, vegetarian).
  • Individual has a history of metabolic/bariatric surgery or plans to have any type of surgery during the study.
  • Individual has a history of an eating disorder (e.g., anorexia nervosa, bulimia nervosa, or binge eating) either diagnosed by a health professional or self-reported.
  • Individual has a history of any major trauma or major surgical event within 2 months of visit 1.
  • Individual has signs or symptoms of an active infection of clinical significance or has taken antibiotics within 5 days prior to any visit (washout is permitted for re-scheduling of the clinic visit).
  • Individual has an allergy, sensitivity, or intolerance to any components of the study foods.
  • Individual is a female who is pregnant, planning to become pregnant during the study period, lactating, or is of childbearing potential and is unwilling to commit to the use of a medically approved form of contraception throughout the study period.
  • Individual has been exposed to any non-registered drug product within 30 days prior to visit 1.
  • Individual is a participant in another research study.
  • Individual has a current or recent history (within 12 months prior to screening) or strong potential for illicit drug or excessive alcohol intake defined as \>14 drinks per week (1 drink = 12 ounces (oz.) beer, 5 oz. wine, or 1.5 oz. hard liquor).
  • Individual has a condition the Investigator believes would interfere with his or her ability to provide informed consent, comply with the study protocol, which might confound the interpretation of the study results, or puts the person at undue risk.

Where

  • Addison, Illinois
  • Chicago, Illinois
  • Bloomington, Indiana

Collaborators

National Cattlemen's Beef Association, a contractor to the Beef Checkoff

Related conditions & keywords

Overweight , Obesity

Frequently asked questions

What is a clinical trial?

A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.

Is it safe to participate?

Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.

Will I be compensated?

Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.

Will I receive a placebo instead of treatment?

When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.

Can I leave a trial if I change my mind?

Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.

How long does a clinical trial last?

Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.

Data: ClinicalTrials.gov · synced Oct 5, 2026 · Source of record for eligibility and locations

📊
1 of 110 participants interested
1% interest

See if this study fits

A short prescreen based on this study's listed criteria. A coordinator confirms eligibility — this is not a medical assessment.

Preparing your pre-screening questions…

Study locations

Choose your preferred location, or select flexible during enrollment.

RECRUITING

Addison

Illinois

Location available
RECRUITING

Chicago

Illinois

Location available
RECRUITING

Bloomington

Indiana

Location available

Express your interest

Share your contact details and a study coordinator can follow up about screening.

Secure & Confidential

Your information is protected and will only be shared with the research team.

What participation can include

  • Study-related care provided by the research team
  • Close monitoring by medical professionals
  • Possible compensation for time and travel*
  • The option to withdraw at any time
  • Contributing to medical research that may help future patients

*Compensation varies by study. Confirm details with coordinator.

Typical next steps

  1. 1.Submit this form
  2. 2.Phone screening
  3. 3.In-person assessment if eligible
  4. 4.Begin participation

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Looking for Overweight , Obesity Treatment in Addison?

Join others in Illinois exploring innovative treatment options through clinical research

Overweight , Obesity Treatment Options in Addison, Illinois

If you're searching for Overweight , Obesity treatment in Addison, participating in a clinical research study may provide access to innovative approaches under expert medical supervision. This study is actively recruiting participants in Addison, Chicago, Bloomington and surrounding areas.

Clinical trials offer participants the opportunity to receive cutting-edge treatments while contributing to medical research that may help future patients with Overweight , Obesity. All study-related care is provided at no cost to participants.

Local Sites
3 locations in Illinois
Now Enrolling
Up to 110 participants
Quick Start
Screening available now

Why Consider a Clinical Trial for Overweight , Obesity?

Potential Benefits

  • ✓Access to new treatment approaches before public availability
  • ✓Close monitoring by experienced medical professionals
  • ✓Study-related care provided at no cost
  • ✓Contribute to medical research for Overweight , Obesity

What to Expect

  • →Initial screening to determine eligibility
  • →Regular check-ups and monitoring visits
  • →Possible compensation for time and travel
  • →You can withdraw at any time

Frequently Asked Questions About This Overweight , Obesity Study

Important Clinical Trial Information

This information is provided for educational purposes and does not constitute medical advice. Clinical trial participation involves potential risks and benefits. Eligibility requirements apply and will be assessed during the screening process.

Study identifier: NCT07789769. For complete study details, visit ClinicalTrials.gov. Always consult with your healthcare provider before making decisions about your medical care or participating in clinical research.