Cardiac output is the amount of blood pumped out by the ventricles in a given period of time. The average adults cardiac output is about 3 quarts per minute. Without adequate blood flow the physical activity becomes harder to do because the blood vessels are not dilating intern, the muscles are not getting enough oxygenated blood. Blood flows through two circuits in the body, the systemic and the pulmonary circuits. In the pulmonary circuit the right side of the heart pumps deoxygenated blood to the lungs where it releases carbon dioxide and picks up oxygen. The blood then flows back to the left atrium chamber of the heart through the pulmonary vein. In the systemic circuit the left side of the heart pumps oxygenated blood to the body, organs, and tissues. After giving up oxygen in those regions and picking up carbon dioxide. The blood then flows back to the heart via a major blood vessel known as the vena cava. To measure cardiac output you must first find the pulse. Next count ever beat for 15 seconds. Finally multiply the number you got by 4 this number is known at beats per minute (bpm).
This experiment was carried out to see the effects of exercise on the heart rate of a person.
My hypothesis is, after exercise, a person’s heart rate will progressively become lower. The null hypothesis is, after exercise, a person’s heart rate will not progressively become lower.
During the experiment the first thing we did was select rolls. We had a control subject, which did not exercise. Then we had a recorder who recorded the data. Then we had two subject or people exercise. The first set of data was taking before exercising which is known as rest. Then the two subjects exercised by running in place or by doing pushups for two minutes. Then right after the exercise the control and subject were recorded again. Then the control and subjects were recorded again after 1, 5, and 10 minutes.
Heart rate in beats per minute
Control
Resting rate before exercise...