Mixed
Combined treatment with structured moderate-to-vigorous exercise and GLP-1 receptor agonist (liraglutide) significantly improves physical functional performance and cardiorespiratory fitness compared to pharmacotherapy alone, whereas pharmacotherapy alone fails to improve these fitness metrics despite weight loss.
If you are using GLP-1 medication for weight loss, do not skip exercise. The medication will help you lose weight, but it will not significantly improve your stamina or physical function. To improve your ability to perform daily tasks (like climbing stairs) and your heart health, you must engage in structured moderate-to-vigorous exercise (at least 150 minutes per week). Combining the medication with exercise yields the best results for physical fitness.
Compared with liraglutide alone, the combined treatment decreased time to complete a stair climb test by 1.2 s [95% confidence interval 0.6–1.9] (corresponding to 8.6%) and improved peak oxygen consumption by 3.0 mL/min/kg fat-free mass [95% confidence interval 0.5–5.5]. Exercise alone led to similar benefits, whereas liraglutide alone did not improve physical fitness.
Why this rating
Randomized controlled trial with a large sample size (n=193) and objective functional endpoints, though secondary analysis.
Source
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
Simon Birk Kjær Jensen et al. · Sports Medicine · 2026
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →