ClinicalTrials.gg
RecruitingNCT07789769Updated Oct 5, 2026

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

An interventional study of 30-30-30 PFE Intervention and Standard in Overweight , Obesity, sponsored by Midwest Center for Metabolic and Cardiovascular Research. Recruiting at 3 sites in United States. Open to participants aged 18 Years to 69 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-10-05.

Primary conditionObesityRegistry: OverweightReclassifiedWhy we changed it
Registry
Overweight — the first condition term the registry derived for this study.
ClinicalTrials.gg
Obesity
Why
  1. The study's listed conditions name Obesity, a narrower term within Overweight.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Midwest Center for Metabolic and Cardiovascular Research · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Started Sep 2026; still recruiting 1 month later.
Updated Oct 5, 2026Now RecruitingSite recruiting status changed+1 moreGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
110
Allocation
Randomized
Ages
18 Years to 69 Years
Sex
All
01

Study summary

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.

02

Conditions studied

  • Overweight , Obesity

Browse trials for

03

In context

Obesity Reclassified

11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.

This study's planned enrollment of 110 is above the median of 67 across 9,006 interventional studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

Midwest Center for Metabolic and Cardiovascular Research is the lead sponsor of 28 studies on the registry; 3 are open to participants now.

Compared within Obesity, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Overweight. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 69 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

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 (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 to participate in the study and authorization for release of relevant protected health information to the study Investigator.

Exclusion criteria

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 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 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 , 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 and is unwilling to commit to the use of a medically approved form of 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 , comply with the study protocol, which might confound the interpretation of the study results, or puts the person at undue risk.
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
110 participants (estimated)

Study arms

  • Active comparator
    Standard

    Standard interactive, online weight loss program adapted from the Rx Weight Loss (WL) program.

    Behavioral: Standard

  • Experimental
    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) (30-30-30 PFE intervention).

    Behavioral: 30-30-30 PFE Intervention

Interventions

  • Behavioral30-30-30 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).

  • BehavioralStandard

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

06

What researchers measure

Primary outcomes

  1. Body Weight

    Percentage change in body weight

    Time frame: From week 0 to week 24

Secondary outcomes

  1. Body Weight

    Percentage change in body weight

    Time frame: From week 0 to week 8

  2. Body Weight

    Percentage change in body weight

    Time frame: From week 0 to week 16

  3. Waist Circumference

    Percentage change in waist circumference

    Time frame: From week 0 to week 8

  4. Waist Circumference

    Percentage change in waist circumference

    Time frame: From week 0 to week 16

  5. Waist Circumference

    Percentage change in waist circumference

    Time frame: From week 0 to week 24

  6. Body composition

    Percentage change in body composition (fat mass, fat-free mass, percent body fat)

    Time frame: From week 0 to week 24

  7. Fasting levels of lipoprotein lipids

    Percentage change in fasting levels of lipoprotein lipids (total cholesterol, low-density lipoprotein cholesterol \[LDL-C\], high-density lipoprotein cholesterol \[HDL-C\], non-HDL-C, triglycerides)

    Time frame: From week 0 to week 8

  8. Fasting levels of lipoprotein lipids

    Percentage change in fasting levels of lipoprotein lipids (total cholesterol, LDL-C, HDL-C, non-HDL-C, triglycerides)

    Time frame: From week 0 to week 16

  9. Fasting levels of lipoprotein lipids

    Percentage change in fasting levels of lipoprotein lipids (total cholesterol, LDL-C, HDL-C, non-HDL-C, triglycerides)

    Time frame: From week 0 to week 24

  10. Fasting markers of glycemia

    Percentage change in fasting markers of glycemia (blood glucose, insulin, homeostasis model assessment of insulin resistance \[HOMA-IR\], homeostasis model assessment of beta-cell function \[HOMA-B\])

    Time frame: From week 0 to week 8

  11. Fasting markers of glycemia

    Percentage change in fasting markers of glycemia (blood glucose, insulin, HOMA-IR, HOMA-B)

    Time frame: From week 0 to week 16

  12. Fasting markers of glycemia

    Percentage change in fasting markers of glycemia (blood glucose, insulin, HOMA-IR, HOMA-B)

    Time frame: From week 0 to week 24

  13. Composite measure of biomarkers of inflammation

    Percentage change in composite measure of biomarkers of inflammation (high-sensitivity C-reactive protein \[hs-CRP\], interleukin \[IL\]-6, IL-10, fibrinogen, and tumor necrosis factor-alpha \[TNF-alpha\])

    Time frame: From week 0 to week 8

  14. Composite measure of biomarkers of inflammation

    Percentage change in composite measure of biomarkers of inflammation (hs-CRP, IL-6, IL-10, fibrinogen, and TNF-alpha)

    Time frame: From week 0 to week 16

  15. Composite measure of biomarkers of inflammation

    Percentage change in composite measure of biomarkers of inflammation (hs-CRP, IL-6, IL-10, fibrinogen, and TNF-alpha)

    Time frame: From week 0 to week 24

  16. Seated, resting systolic and diastolic blood pressures

    Percentage change in seated, resting systolic and diastolic blood pressures.

    Time frame: From week 0 to week 8

  17. Seated, resting systolic and diastolic blood pressures

    Percentage change in seated, resting systolic and diastolic blood pressures.

    Time frame: From week 0 to week 16

  18. Seated, resting systolic and diastolic blood pressures

    Percentage change in seated, resting systolic and diastolic blood pressures.

    Time frame: From week 0 to week 24

07

Study locations

3 of 3 sites recruiting
08

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Sep 2026 (actual). Primary completion is estimated for May 2027, 8 months after the start.

Of 3,680 non-industry interventional studies with no phase under Obesity, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 43. This study's planned 8 months is below that.

Counting every sponsor, half of 3,843 studies reached it within 22 months; a quarter within 10 and three quarters within 42.

Start moved once since we started tracking on Sep 25, 2026: Aug 2026 → Sep 2026, on Oct 5, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Aug 24, 2026
First posted
Aug 27, 2026
StartActual
Sep 23, 2026was Aug 2026
Primary completionEst.
May 2027
CompletionEst.
May 2027
Last update
Oct 5, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Status
Not yet recruiting→Recruiting
changed Oct 5, 2026
Sites
3 sites changed recruiting status (3 now recruiting)
Show 3 sites
  • Biofortis Clinical Research · Addison, United Statesno status→Recruiting
  • Illinois Institute of Technology · Chicago, United Statesno status→Recruiting
  • Indiana University · Bloomington, United Statesno status→Recruiting
Oct 5, 2026
Start date
Aug 2026→Sep 23, 2026 (actual)
Oct 5, 2026
Show all 1 update
  1. Oct 5, 2026
    Not yet recruiting→Recruiting
    3 sites changed recruiting status (3 now recruiting)
    Show 3 sites
    • Biofortis Clinical Research · Addison, United Statesno status→Recruiting
    • Illinois Institute of Technology · Chicago, United Statesno status→Recruiting
    • Indiana University · Bloomington, United Statesno status→Recruiting
    Start date Aug 2026→Sep 23, 2026 (now actual)
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

09

Registry details

Key details

Study ID
NCT07789769
Lead sponsor
Midwest Center for Metabolic and Cardiovascular Research
Collaborators
National Cattlemen's Beef Association, a contractor to the Beef Checkoff
Responsible party
Sponsor
First posted
Aug 27, 2026
Start date
Sep 23, 2026
Primary completion
May 2027 (estimated)
Completion
May 2027 (estimated)
Last update
Oct 5, 2026

Study contacts

Caryn G Adams, MPH
Contact
cwolfe@mbclinicalresearch.com
6304696600
Liana L Guarneiri, PhD, RDN
study director · Midwest Biomedical Research

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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