Recruiting

Anti-Obesity Medications

Sponsor:

University of Kansas Medical Center

Code:

NCT06645470

Conditions

Obesity and Overweight

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

Standard Medical Care (SMC)

Monitoring Contacts

Aerobic Training

Resistance Training

Nutrition Education

Study Details

Brief summary:

The goal of this clinical trial is to learn about changes in body composition related to obesity medication use, and whether aerobic or resistance exercise training will impact these body composition changes. It will also provide information about whether aerobic or resistance exercise training has additional benefits on other health and fitness measurements. The main questions it aims to answer are:

  • Is there a difference in the change in body composition (fat mass, lean mass, muscle mass, and bone content) between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in the change in body weight and BMI between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in the change in cardiorespiratory fitness between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in how much physical activity is completed between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in the change in physical function between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in the change in muscle strength between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in the change in resting blood pressure between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in the change in food intake between the standard medical care and the exercise conditions (aerobic training and resistance training)?
  • Is there a difference in the change in health-related quality of life between the standard medical care and the exercise conditions (aerobic training and resistance training)?

Participants will:

  • Participate in an intervention for a period of 6 months that involves being assigned to a no exercise/standard medical care condition, or a supervised exercise condition (aerobic training or resistance training).
  • Visit the clinical before starting the study and at 6 months to complete study measurements of their body composition and other measurements to monitor their progress.
  • Complete a brief monitoring session at weeks 6, 12, and 18 across the 6 months.
  • Complete supervised exercise sessions at the research center 3x per week for 6 months (Participants in the exercise groups only: aerobic training or resistance training).

Conditions

Obesity and Overweight

Study ID

NCT06645470

Start date

Dec 1, 2024

Status verified date

May, 2026

Completion date

Sep, 2026

Anticipated

Primary completion date

Sep, 2026

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria:

  • Both males and females of all race/ethnic groups are eligible for participation in this study.
  • Age: Randomized Study: Adults that are 18 to <60 years of age. Observational Study: Adults that are >60 years of age.
  • Newly prescribed AOM (semaglutide, tirzepatide) for the treatment of obesity, approval for treatment (pharmacy, insurance, etc.), and the participant agreeing to start this treatment and continue treatment for at least 6 months (the participant will be recruited prior to this medication being initiated).
  • Body mass index (BMI) of >27.0 kg/m2 with at least one weight-related complication (hypertension, dyslipidemia, obstructive sleep apnea, or cardiovascular disease) provided it this does not compromise the ability to safely complete the screening or outcome measures or to engage in the prescribed exercise interventions), or >30 kg/m2 without weight-related complications. Enrollment will not be limited based on an upper BMI level provided that the participant meets the other eligibility requirements. However, weight or size limits of the dual-energy x-ray absorptiometry (DXA) system that is used to assess body composition must not be exceeded.
  • Ability to provide informed consent prior to participation in this study.
  • Clearance from the study physician for meeting all eligibility criteria for this study.

Exclusion Criteria:

  • Type 2 diabetes.
  • Report moderate-to-vigorous exercise for >60 min/week, and >1 day of structured cardiovascular or resistance exercise over the past 3 months.
  • Report sustained weight loss of >3% in the past 3 months.
  • History of metabolic/bariatric surgery.
  • Females who are pregnant, pregnant within the past 6 months, or reporting a planned pregnancy during the study period.
  • Report a current medical condition or treatment for a medical condition that could affect body weight or contradict engagement in any aspect of the outcome measures or interventions.
  • History of muscle conditions that may impact the quality of muscle or response to the study interventions (e.g., myopathy, muscular dystrophy, rhabdomyolysis, etc.).
  • Current congestive heart failure, angina, uncontrolled arrhythmia, symptoms indicative of an increased acute risk for a cardiovascular event, prior myocardial infarction or history of cardiomyopathy, coronary artery bypass grafting or angioplasty, conditions requiring chronic anticoagulation (i.e., recent or recurrent DVT).
  • Resting systolic blood pressure of >160 mmHg or resting diastolic blood pressure of >100 mmHg. If medicated for blood pressure control, the medication dose needs to be stable for >6 months.
  • Eating disorders that would contraindicate weight loss or physical activity.
  • Alcohol or substance abuse.
  • Current psychological condition that is untreated, hospitalization for a psychological condition within the past 12 months, or not being on a stable dose of treatment for at least 6 months.
  • Report plans to relocate to a location not accessible to the study site or having employment, personal, or travel commitments that prohibit attendance at scheduled intervention sessions or assessments.

Study Design

Enrollment

40 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

active comparator: Standard Medical Care

Standard Medical Care will continue to receive their regular standard clinical care during the 6-month intervention period of this study and will also receive brief contacts from the research staff at weeks 6, 12, and 18.

experimental: Standard Medical Care plus Aerobic Training

Standard Medical Care plus Aerobic Training will continue to receive their regular standard clinical care during the 6-month intervention period of this study and will also receive supervised aerobic exercise in addition to brief contacts from the research staff at weeks 6, 12, and 18.

experimental: Standard Medical Care plus Resistance Training

Standard Medical Care plus Resistance Training will continue to receive their regular standard clinical care during the 6-month intervention period of this study and will also receive supervised resistance exercise in addition to brief contacts from the research staff at weeks 6, 12, and 18.

Interventions

Standard Medical Care (SMC)

Standard Medical Care will continue to receive their regular standard clinical care during the 6-month intervention period of this study.

Monitoring Contacts

Participants will receive contacts with the research staff at weeks 6, 12, and 18.

Aerobic Training

Aerobic Training will be supervised exercise. It will occur on 3 days per week and will progress to 50 minutes per session (150 minutes per week). The intensity of the exercise will progress from 60%±5% to 70%±5% of age-predicted maximal heart rate (if taking beta-blocker medication intensity will progress from a Rating of Perceived Exertion of 11-13 to 12-14 based on the 6-20 Borg scale). While walking will be the preferred mode of exercise, alternative forms of cardiovascular exercise (upright cycling, elliptical, etc.) are allowed to accommodate any physical limitations that may be present for a participant. Heart rate will be monitored throughout these exercise sessions.

Resistance Training

Resistance Training will be supervised exercise. It will occur 3 days per week and includes 8 exercises performed in a prespecified order. Week 1-2 sessions focus on familiarization to acclimate the participant to the equipment, proper form, to establish initial weight (load) for training, and with performing multiple sets per day. For Weeks 3-8, participants will engage in 2 sets per exercise with the weight adjusted to elicit muscle fatigue in 8-12 repetitions per set. This progresses to 3 sets per exercise from Week 9 until the end of the intervention period. When 12 repetitions for a specific exercise can be achieved, the resistance will increase for that exercise at the next session. There is a 90 second rest period between each set of an exercise. Heart rate will be monitored throughout these exercise sessions.

Nutrition Education

A single counseling session to discuss the dietary recommendations when taking an obesity medication.

Primary outcome measure

  • Lean Body Mass [ Time Frame: 0 and 6 months ]

Central Contacts and Locations

Central contacts

Renee J. Rogers, Ph.D.

913-588-8580rrogers10@kumc.edu

John M. Jakicic, Ph.D.

913-588-9078jjakicic@kumc.edu

Locations

University of Kansas Medical Center

Recruiting

Kansas City, Kansas, United States, 66160

Contacts

Renee J. Rogers, Ph.D.

913-588-8580rrogers10@kumc.edu

John M. Jakicic, Ph.D.

913-588-9078jjakicic@kumc.edu

More Information

Sponsor

University of Kansas Medical Center

Last update posted

May 11, 2026

Last verified

May, 2026

Keywords

  • exercise
  • weight loss
  • obesity medication
  • obesity
  • overweight

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by University of Kansas Medical Center on 2026-05-11.