What is the primary effect of exercise training on blood lipids?

The primary effect of exercise training on blood lipids is indeed characterized by decreased triglycerides and increased high-density lipoprotein (HDL). Engaging in regular physical activity, particularly aerobic exercise, has been consistently shown to positively influence lipid profiles.

When individuals undergo regular exercise, several physiological changes occur. Exercise enhances the efficiency of lipid metabolism and stimulates the breakdown of triglycerides, leading to lower levels of triglycerides in the bloodstream. Additionally, regular physical activity has a beneficial effect on HDL levels, which is often referred to as "good" cholesterol. Higher levels of HDL are advantageous because this lipoprotein helps transport cholesterol away from the arteries and back to the liver, where it can be processed and eliminated from the body. Consequently, this relationship underscores the protective role of exercise in reducing cardiovascular disease risk.

Thus, the combination of decreased triglycerides and increased HDL represents the expected outcome of a consistent exercise training regimen, supporting cardiovascular health and contributing to improved overall lipid profiles.