• Explain The Difference Between Blood Pressure And Exercise

Your heart speeds up to pump extra food and oxygen to the muscles. Breathing speeds up to get more oxygen and to get rid of more carbon dioxide. When a fit person, such as an athlete, exercises the pulse rate, breathing rate and lactic acid levels rise much less, than they do in an unfit person. As the exercise intensity increases so do the heart and respiratory rates to supply oxygen to the working muscles at a faster rate so they can keep up, few athletes have perfected this to a point where they can reach a ‘steady state’ in which oxygen supply meets oxygen demand. The arteriovenous oxygen difference, or a-vO2 diff, is the difference in the oxygen content of the blood between the arterial blood and the venous blood. It is an indication of how much oxygen is removed from the blood in
When arteries narrow, peripheral resistance rises. When they widen, peripheral resistance drops. More cardiac output and greater peripheral resistance result in higher blood pressure. During vigorous exercise, your systolic blood pressure rises because your heart must work harder to pump more blood with each contraction to keep your muscles supplied with oxygen. The more strenuous the exercise, the greater the rise in systolic pressure. During a very vigorous workout, systolic blood pressure in a healthy athlete may rise to 200. Normally, however, diastolic blood pressure changes very little, if at all. In a young, healthy person, diastolic blood pressure typically rises by no more than a few digits, even during a strenuous workout. That is because the blood vessels in your working muscles widen, decreasing peripheral resistance. Vasoconstriction of blood vessels is a normal response to certain stimuli. To supply the working muscles with the blood they need, your body redirects blood