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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 Exercising Values Cardiac EDV (mL) ESV (mL) Cardiac EDV (mL) ESV (mL) cycle length cycle length (msec) (msec) 856 145 72 431 139 34 809 136 66 457 141 38 828 135 72 414 140 35 139 70 140 36
Subject 1 Subject 2 Subject 3 Averages
Resting and Exercising HR, EDV andESV
1. Resting and exercising cardiac cycle length -a. What was the average resting cardiac cycle length? 831 b. What was the average exercising cardiac cycle length? 434 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? Decrease
2. Resting and exercising EDV -a. What was the average resting EDV? 139 b. What was the average exercising EDV? 140 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? not change
3. Resting and exercising ESV -a. What was the average resting ESV? 70 b. What was the average exercising ESV? 36 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? decrease
Table 3: Resting and Exercising HR, SV and CO
HR (strokes per second) 70 74 72 72 Resting...
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