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BIOS255 WEEK 1 Lab: #6 Effect of Exercise on Cardiac Output LABORATORY REPORT

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BIOS255 WEEK 1 Lab: #6 Effect of Exercise on Cardiac Output LABORATORY REPORT
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

3. Controlled Variables: age, weight, height

4. What instrument was used to measure cardiac volumes? MRI

5. Does the instrument that was used to measure cardiac volume use X-rays? Explain.

No. MRI uses a powerful magnet in conjunction with radio frequency waves to generate images of your internal organs and structures.

.
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? 825

b. What was the average exercising cardiac cycle length?432

c. The range of normal resting cardiac cycle length is between 818 and 858 ms. Did average cardiac cycle length increase, decrease, or not change with exercise? decreased 2. Resting and exercising EDV:

a. What was the average resting EDV? 139

b. What was the average exercising EDV? 139

c. The range of normal resting EDV is between 135 and 145 ml for these subjects. Did average EDV increase, decrease, or not change with exercise?
No change

3. Resting and exercising ESV:

a. What was the average resting ESV? 70

b. What was the average exercising ESV? 34

c. The range of normal resting ESV is between 65 and 75 for these subjects. Did average ESV increase, decrease, or not change with exercise? decreased

See Table 3: Resting and Exercising HR, SV, and CO
See Graph: Resting and Exercising SV and CO

4. Resting and exercising HR:

a. What was the average resting HR? 73

b. What was the average exercising HR? 139 c. The range of normal resting HR is between 70 and 73 beats per minute

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