Motivation: a New Explanation for Why Exercise Reduces Depression

In the article Motivation: a New Explanation for Why Exercise Reduces Depression it is reported that researchers have a new explanation for why exercise reduces depression.  A study published in July suggests that exercises may exert anti-depressive effects by reducing brain inflammation and cultivating motivation.

“We are proposing that exercise—particularly aerobic activities that make you sweaty and out of breath—decreases inflammation and boosts dopamine transmission, which in turn increases the desire to exert effort, and therefore boosts motivation generally,” the report notes. Inflammation is known to inhibit the transmission of dopamine, a neurotransmitter believed to influence decisions leading to pleasurable rewards. Dopamine, which transmits messages between nerve cells in the brain and throughout the body, is associated with experiencing pleasure, as well as motivating us to seek rewards.  

“Several studies indicate that dopamine transmission is enhanced by physical activity, in particular aerobic exercise, indicating this as a potentially useful alternative method to boost dopamine and increase motivation in depression, … exercise can be a key component of the treatment plan for mild and some moderate depression.”

“Exercise releases dopamine and adrenaline, chemicals that provide uplifting feelings. Exercise dramatically improves blood circulation to the brain, supplying it with oxygen and vital nutrients. It also carries away waste products, detoxifying the brain. Exercise also gets us away from the stressors and removes us to a place where we can be in the present and away from everything that is weighing on us.”

“We need to address all three spheres: spirit, mind, and body. When you address the physical through exercise, it starts to give some motivation, to help stimulate and heal the brain, so the patient can think more clearly.”