The hypothesis that exercise may result in lower cholesterol levels is supported by research evidencing the cardiovascular benefits of physical activity, including the lowering of LDL cholesterol and raising HDL cholesterol. However, scientific validation requires actual measurement and analysis of cholesterol levels in both exercising and non-exercising individuals.
In the context of the experiment described, the statement that people who exercise for an hour may have lower cholesterol levels could potentially be true, but the experiment must be conducted to confirm it. To test this statement, the scientist would measure cholesterol levels in individuals who exercise regularly and those who do not. Based on research that indicates regular exercise enhances cardiovascular health by removing LDL cholesterol known for its negative impact on heart health, it is reasonable to hypothesize that cholesterol levels would be lower in exercisers compared to non-exercisers.
Exercise has been shown to have various benefits such as increasing the efficiency of blood circulation, reducing the rate of plaque formation in arteries, and lowering blood pressure. Moreover, exercise can increase levels of high-density lipoproteins (HDLs), which have a protective effect against heart disease. Collectively, these factors support the hypothesis that people who engage in regular physical activity would have better cholesterol profiles than those who are sedentary. However, definitive conclusions can only be made once the experiment is conducted and the data are analyzed.