Question

Cardiorespiratory endurance is characterized by: O a) increased blood glucose levels ОБ) b decreased stroke volume of the heart Oc) reduced blood HDL cholesterol Od) a faster resting pulse Oe) incre

Answer 1

Cardiorespiratory endurance improves cardiac reserve and efficiency, characterized by a decreased resting heart rate and better oxygen utilization. It is positively impacted by aerobic exercise, leading to benefits such as lower blood pressure and improved cholesterol levels.

Step-by-step explanation:

Cardiorespiratory endurance is characterized by the ability of the cardiovascular and respiratory systems to supply oxygen to muscles during prolonged physical activity. When we engage in aerobic exercise, the heart becomes more efficient at pumping blood, improving what's known as the cardiac reserve, which measures the heart's capacity to pump blood above the resting level. Improved cardiorespiratory endurance often results in a decreased resting heart rate, better utilization of oxygen by the muscles, and an increased ability to remove carbon dioxide and other waste products from the system.

An indicator of good cardiorespiratory fitness is not an increased resting pulse, contrary to one option in the question; instead, a lower resting heart rate is typically a sign of a more efficient cardiovascular system. Moreover, successful aerobic conditioning may also contribute to reduced blood pressure, lower levels of bad LDL cholesterol, increased levels of good HDL cholesterol, and overall improvement in heart muscle function.

Answer 2

The correct answer is C.) Cardiorespiratory endurance improves the heart's efficiency, leading to increased stroke volume and decreased resting heart rate, as well as higher levels of beneficial HDL cholesterol.

Step-by-step explanation:

Cardiorespiratory endurance is characterized by an increase in the efficiency of oxygen utilization during prolonged physical activity, and it is marked by physiological changes such as increased stroke volume of the heart, and lower resting heart rate. As the heart is a muscle, regular aerobic exercise can improve its efficiency, leading to a greater cardiac reserve, which is the difference between maximum and resting cardiac output (CO). This condition also often correlates with increased HDL cholesterol, which is beneficial for cardiovascular health.