LABORATORY REPORT
(Click on the Save a Copy button on the panel above to save your report)

Activity: Name: Instructor: Date:

Effect of Exercise on Cardiac Output Candice O'Shaughnessy Professor Williams January 5, 2015

Predictions
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? ECG machine 5. Does the instrument used to measure cardiac volume use X-Rays? Explain. No, the ECG machine does not use dye's or X-Ray's. It is a noninvasive test perfromed by attaching eletrodes to the outside of the body and then by detecting and tracing heart rhythm.

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) 842 142 71 418 145 39 858 138 69 403 138 35 832 141 74 414 140 35 140 71 141 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? 844 msec b. What was the average exercising cardiac cycle length? 412 msec 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? The average cardiac cycle length decreased during exercise.

2. Resting and exercising EDV -a. What was the average resting EDV? 140 msec b. What was the average exercising EDV? 141 msec 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