Skip to main content

Myokines

Meaning

Myokines are a class of small signaling proteins, or peptides, secreted by skeletal muscle fibers, particularly in response to muscle contraction during physical activity. These molecules function as hormones, communicating with distant organs like the liver, adipose tissue, and brain, linking muscle activity to systemic metabolic and endocrine health. They are key mediators of the beneficial effects of exercise, influencing insulin sensitivity, inflammation, and energy metabolism.