Physical activity increase

"Physical activity increase" refers to an *intervention*—the act of increasing movement or exercise performed by an organism—not a discrete molecule, protein, receptor, enzyme, transporter or other canonical therapeutic target. While increasing physical activity has profound effects on human physiology—including improvements in cardiovascular fitness,[4] cognitive function,[1] immune modulation,[9] metabolic health,[5] neuroplasticity,[1], gene expression changes via epigenetic mechanisms,[7], among others—it does so through complex systemic pathways involving many different molecules (e.g., BDNF), tissues (muscle/adipose/brain), and regulatory networks rather than acting as one specific druggable entity. In summary: *Physical Activity Increase* should **not be considered a valid molecular/receptor therapeutic target**, but rather describes an intervention that triggers broad biological responses mediated by numerous downstream targets at the cellular/molecular level.[3][4]

Other names

Physical activityExercisePhysical exerciseActivity increase

Not applicable directly. However, the *effects* of increased physical activity are mediated by: Increased BDNF signaling via TrkB receptor in the brain leading to improved cognition and mood[1][7]. Modulation of gene expression through epigenetic mechanisms such as DNA methylation and histone modification in muscle and brain tissue after exercise interventions[7][9]. Changes in immune cell function, inflammatory cytokine profiles, oxidative stress reduction, etc.[5][9]. Drugs may be developed to mimic some cellular signals induced by exercise but "physical activity increase" itself is not targeted by drugs.[4]