Effect of Posture

	Sitting			Standing			Reclining
Time (min)	Systolic	Diastolic	Heart rate	Systolic	Diastolic	Heart rate	Systolic	Diastolic	Heart rate
0
2
4
6

Effect of Exercise

Time	Systolic	Diastolic	Heart rate
0:00
0:30
1:00
1:30
2:00
2:30
3:00
3:30
4:00
4:30
5:00
5:30
6:00
6:30
7:00
7:30
8:00
8:30
9:00
10:00
11:00
12:00
13:00
14:00
15:00

Plot your subject's systolic pressure and diastolic pressure vs. time on one graph.

Plot your subject's heart rate vs. time.

Answer the following questions:

1. How long did it take for the subject to return to resting heart rate?

2. How long did it take for the subject to return to resting systolic blood pressure?

3. How long did it take for the subject to return to resting diastolic pressure?

4. Explain why blood pressure can change in response to posture.

5. Explain why blood pressure changes in response to exercise.

6. Describe factors that could influence the speed with which blood pressure returned to normal.

7. Explain why heart rate changes in response to exercise.