Critical Role of Exercise in the GLP-1 Era

"GLP-1 therapies have been shown to reduce caloric intake by up to 39% and produce substantial weight loss. By comparison, standard physical activity recommendations (150 minutes per week) yield relatively modest calorie expenditure. However exercise's value extends far beyond energy balance - it has important complementary effects, including improved insulin sensitivity, increased fat oxidation and, perhaps most importantly, preservation of fat-free mass."

"Exercise plays a critical role in preserving muscle mass - an area of concern with GLP-1 therapies. Studies show that a large percentage of weight loss on GLP-1 medications may come from fat-free mass, including muscle, increasing the risk of sarcopenia. Another issue highlights a key clinical concern: Up to 60% of patients discontinue GLP-1 medications within a year, with many regaining a significant portion of lost weight."

"Regular physical activity, particularly at higher volumes, plays an important role in mitigating this regain. Despite its proven benefits, exercise remains difficult for many patients to sustain. Barriers include time constraints, physical limitations, lack of access to facilities and that, for some, exercise can feel difficult and unrewarding."

GLP-1 therapies such as semaglutide and liraglutide reduce caloric intake and can produce substantial weight loss, but they do not replace exercise. Physical activity provides complementary benefits including improved insulin sensitivity, increased fat oxidation, and preservation of fat-free mass. Preserving muscle mass is important because a large share of weight loss on GLP-1 medications may come from fat-free mass, raising sarcopenia risk. Many patients discontinue GLP-1 medications within a year and often regain weight, and regular physical activity at higher volumes can help mitigate regain. Exercise is difficult to sustain for many due to time constraints, physical limitations, limited access to facilities, and experiences of exercise as difficult or unrewarding.

Read at Alternative Medicine Magazine