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Study breakdown

Exercise + GLP-1 Drug Combination: Does Physical Fitness Benefit Persist or Compete?

RPEP-153742026Jensen, Simon Birk Kjær; Fiorenza, Matteo; Juhl, Christian Rimer; Sandsdal, Rasmus Michael; Jensen, Emma; Seier, Søren Sonnenborg; Janus, Charlotte; Jørgensen, Julie Rehné; Blond, Martin Bæk; Holst, Jens Juul; Stallknecht, Bente Merete; Madsbad, Sten; Bandholm, Thomas; Torekov, Signe Sørensen
evidence
The takeaway

Exercise combined with GLP-1 RA treatment was evaluated for additive, synergistic, or competitive effects on physical fitness outcomes, providing evidence for optimal combination strategies.

Exercise + GLP-1

Understanding how exercise and GLP-1 drugs interact for physical fitness is essential for optimizing millions of patients' treatment plans

What the researchers found

Exercise + GLP-1 RA combination effects on physical fitness assessed, informing whether the interventions are additive, synergistic, or competitive for functional outcomes.

Why it matters

Most GLP-1 drug users should exercise to preserve muscle, but how the two interventions interact for fitness is poorly understood.

How the study worked

Study evaluating physical fitness outcomes with exercise alone, GLP-1 RA alone, and combination treatment.

What this study cannot tell us

Specific outcome details in full paper.

How to read the evidence

Controlled study with multiple intervention groups.

When this study was published

Published in 2025.

The bigger picture

Optimizing the exercise-GLP-1 combination could maximize the benefit-to-risk ratio of obesity treatment.

Questions still open

  • Does exercise fully compensate for GLP-1-induced lean mass loss?
  • What exercise type (aerobic vs resistance) best complements GLP-1 therapy?
  • Should exercise prescription change with GLP-1 dosing?

Common questions

Should I exercise while on GLP-1 drugs?
Yes. This study examines how exercise and GLP-1 drugs interact for fitness. Exercise helps preserve muscle mass that GLP-1 drugs may reduce.
Does exercise make GLP-1 drugs work better?
They may be complementary — exercise preserves muscle while GLP-1 drugs reduce fat. The optimal combination strategy is what this study explores.

Read the original research

Physical Fitness with Exercise and GLP-1 Receptor Agonist Treatment Alone or Combined After Diet-Induced Weight Loss: A Secondary Analysis of a Randomized Controlled Trial in Adults with Obesity.

Sports medicine (Auckland, N.Z.)

View on PubMed ↗Publisher’s paper ↗

Citation

Jensen, Simon Birk Kjær; Fiorenza, Matteo; Juhl, Christian Rimer; Sandsdal, Rasmus Michael; Jensen, Emma; Seier, Søren Sonnenborg; Janus, Charlotte; Jørgensen, Julie Rehné; Blond, Martin Bæk; Holst, Jens Juul; Stallknecht, Bente Merete; Madsbad, Sten; Bandholm, Thomas; Torekov, Signe Sørensen. (2026). Physical Fitness with Exercise and GLP-1 Receptor Agonist Treatment Alone or Combined After Diet-Induced Weight Loss: A Secondary Analysis of a Randomized Controlled Trial in Adults with Obesity.. Sports medicine (Auckland, N.Z.). https://doi.org/10.1007/s40279-025-02386-0