Effect of Exercise on Cardia Output Essay

1066 Words Aug 30th, 2013 5 Pages
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Activity: Name: Instructor: Date:

Effect of Exercise on Cardiac Output August 26, 2013

1. During exercise HR will increase. 2. During exercise SV will decrease. 3. During exercise CO will increase.

Materials and Methods
1. Dependent Variable EDV, ESV, and cardiac cycle length 2. Independent Variable level of physical activity(resting or exercise) 3. Controlled Variables age, weight, height 4. What instrument was used to measure cardiac volumes? MRI 5. Does the instrument used to measure cardiac volume use X-Rays? Explain. no

Results Table 2: Resting and Exercising Cardiac Cycle Length, EDV, and ESV
Resting Values
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In addition to circulatory improvements, exercise helps muscles and tissues become conditioned to allow them to overcome the stresses of working out. During exercise, the body demands additional oxygen and requires removal of extra carbon dioxide increasing the heart rate. EDV is increased with exercise 3. What caused the change in ESV volume with exercise? ESV decreases with exercising so that there is less resistance for the blood to flow to increase cardiac output. 4. Why did SV change with exercise? SV increase during exercise because an individuals body needs more oxygen and nourishment that are both received from the pumping of blood. The level of increase of SV is also depends on the type of exercise 5. Discuss the importance of the change in CO with exercise? When the body is in rest cardiac output is lower as the demand in oxygen is low. During exercise heart rate and stroke volume increase which results in an increase in cardiac output 6. Restate your predictions that were correct and give data from your experiment that support them. Restate your predictions that were not correct and correct them, giving supporting data from your experiment that supports your corrections. My prediction were correct

1. We measured the stroke volume of the left ventricle. What was the average stroke volume of the right ventricle at rest and after exercise? 69 resting 104 exercising 2. Assume that for one beat, the stroke volume of the left

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