Strength Training and GLP-1 Medications

This study is looking at how strength training affects muscle mass in people aged 50 and older who are taking GLP-1 medications like Wegovy or Zepbound for weight loss. Researchers want to see if these medications, which can sometimes reduce muscle, might be balanced by exercise. You could join if you are 50 or older, weigh less than 300 pounds, and have been taking a GLP-1 medicine for a month or less. The study will measure changes in your muscle mass and balance to see if strength training helps. The current recruitment status is unclear.

Study design
This interventional study plans to enroll 30 participants. Some will start strength training right away, while others will wait before beginning the program.
What's involved
You would participate in a 14-week strength training program, exercising three days a week with a personal trainer. You would also have two-hour lab testing sessions at the beginning and end of the 14 weeks to measure muscle mass and balance.
Compensation
Not stated in the trial record.
Follow-up
Participants will be assessed at baseline and after 14 weeks of intervention.

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NCT07104539

Strength Training Response of Muscle in GLP-1 Users

Recruiting
NAAges 50+InterventionalPrevention
Virginia Polytechnic Institute and State University
~30 participants
Updated 2026-01-21 on ClinicalTrials.gov
What's tested:Strength TrainingWait first, then strength training

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Muscle mass by d3-creatine dilution
Measured over Water containing creatine isotope consumed in lab; Urine sample collection on Day 0 and Day 3 at baseline and 14 weeks.
+1 more outcome measured
Muscle Mass
1 sites across 1 states
Virginia1
  • Kevin Davy · PRINCIPAL_INVESTIGATOR · Virginia Polytechnic Institute and State University

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Eligibility criteria

Inclusion

Age, 50y+
Be taking GLP-1 medicine (Weygovy or Zepbound) for 1 month or less
Weight \<300 lb
Pass a health and exercise readiness screening

Exclusion

Age \<50
Weight \>300 lb
Osteoporosis
Active metabolic, neoplastic, or cardiovascular disease
Unable or unwilling to provide consent
  • Muscle mass by d3-creatine dilutionWater containing creatine isotope consumed in lab; Urine sample collection on Day 0 and Day 3 at baseline and 14 weeks.

    Participants will collect a urine sample prior to be provided a creatine capsule containing 30 milligrams of a naturally-occurring creatine isotope. A glass of water will be provided to wash it down. Participants will be asked to return \~3 days later to provide another urine sample. Urine samples will be analyzed at an off-site laboratory to determine changes in d3-creatine excretion before and after the 14-week strength training intervention.

  • Balance testing - Percentage of failed recoveries2-hour testing session in lab at baseline and 14 weeks.

    Participants will stand on the treadmill with the belt stationary. The belt will then suddenly change to a speed specified by the investigator, and the participant will attempt to step to maintain their balance and establish a stable gait. In addition to the treadmill itself, this system includes an integrated fall arrest harness that is anchored to an overhead gantry that is fixed to the treadmill. This harness prevents any body part but the feet from impacting the treadmill in the event that the participant is unable to maintain their balance after a sudden change in speed.