Blood Pressure and Heart Rate Response
Blood Pressure and Heart Rate Response
Cardiovascular Physiology
Directions for Data Collection
1. After sitting quietly on the bicycle for 3 minutes, take a resting blood pressure and heart rate. Each person will then ride in progressive 2-minute increments from low power outputs to high power outputs on the bicycle ergometer as indicated on the data sheet. Continue riding until you can not maintain 70 RPM.
2. During the second minute of each 2-minute power output, take the blood pressure and the heart rate. (Do not increase the power output until the BP and HR has been taken. Start early enough to finish by the end of the 2 minutes) Record on the data sheet the HR, the systolic pressure, the phase 4 diastolic pressure and the phase 5 diastolic pressure.
Directions for Lab Write-up
1. Using Excel plot each of the following on a separate graph:
a. The relationship between power output and systolic blood pressure for the average female, average male and your individual response.
b. The relationship between power output and diastolic phase 4 blood pressure for the average female, average male and your individual response.
c. The relationship between power output and diastolic phase 5 blood pressure for the average female response, the average male response and your individual response.
2. On a single graph, plot the heart rate vs power output for the average female response, the average male response and your response.
General Instructions for the graphs: Put power on the X-axis. Begin the X-axis power output with the resting interval. Use either colors or contrasting line styles for each of the line graphs so they are easily readable and distinguishable. Extend the size of the graph so it occupies most of the page like the sample graph does and print it in landscape (longwise on the paper). Relative to the axes, labels, intervals and keys, your graph should look very similar to the sample graph that you can access on the web site (Blood Pressure and Heart Rate Sample Graph). Note that the tic marks on the horizontal power axis should coincide with the power labels.
Answer the following questions using MS Word. Double space all your responses.
a. Describe/explain the normal response of BP (systolic and both diastolic pressures) and HR to increasing power outputs. Was the average male response “normal” or “abnormal”? Explain why. Was the average female response “normal” or “abnormal”? Explain why.
b. Compare your individual response to the average response for your gender. If your response is generally below or above the average response, provide a physiologic rationale as to why your response is not the same as the average response.
c. Compare the average male response to the average female response. Explain differences in the average responses to include differences in maximal power outputs and maximal heart rates.
Name _______________________________________ Age _______ Weight _______ lbs _______ kg
|Kg/RPM |Power Output |Systolic |Phase 4 |Phase 5 Diastolic | HR |
| |(kgm.min-1) |(mmHg) |Diastolic |(mmHg) |Monitor |
| | | |(mmHg) | |(bpm) |
|Resting |0 | | | | |
|0.5/70 |210 | | | | |
|1.0/70 |420 | | | | |
|1.5/70 |630 | | | | |
|2.0/70 |840 | | | | |
|2.5/70 |1050 | | | | |
|3.0/70 |1260 | | | | |
|3.5/70 |1470 | | | | |
|4.0/70 |1680 | | | | |
|4.5/70 |1890 | | | | |
|5.0/70 |2100 | | | | |
|5.5/70 |2310 | | | | |
|6.0/70 |2520 | | | | |
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