REPORT
Activity 6: Effect of Exercise on Cardiac Output
Name: Shamir Tyson
Instructor: Professor Smith
Date: September 8, 2013
PREDICTIONS
1. During exercise: HR will increase
2: During exercise: SV will increase
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: Health, gender, age, weight and height
4. What instrument was used to measure cardiac volumes? An MRI was used to measure
Cardiac Volumes
5. Does the instrument that was used to measure cardiac volume use X-rays? Explain.
This device is similar to an X- Ray however the MRI obtains 2- dimensional images then
processed them to obtain 3d images.
RESULTS
See Table 2: Resting and Exercising Cardiac Cycle Length, EDV, and ESV
See Graph: Resting and Exercising HR, EDV, and ESV
1. Resting and exercising cardiac cycle length:
a. What was the average resting cardiac cycle length? 815+846+829=2,490/3= 830
b. What was the average exercising cardiac cycle length? 389+364+414= 1167/3= 389
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