Regular aerobic exercise is associated with which change in lipid and cardiovascular profiles?

• A. Increased HDL cholesterol, decreased body fat, and decreased stroke volume
• B. Increased resting pulse rate and decreased exercise threshold for lactate accumulation
• C. Decreased resting pulse rate, increased triglycerides, and increased cardiac output
• D. Increased stroke volume, decreased blood pressure, and decreased blood cholesterol

Answer: (A)

Regular aerobic exercise improves lipid and cardiovascular profiles by raising HDL cholesterol and reducing body fat. Increased HDL is a protective change, and losing body fat lowers overall cardiovascular risk. Among the options, this combination best reflects the well-established effects of endurance training on lipids and body composition. While endurance training also brings other cardiovascular adaptations, such as lower resting heart rate and typically increased stroke volume, the key lipid and fat-loss changes here make this the strongest match.