1. Heart Rate Blood Pressure
Our Body’s Vitals
Heart Rate
Blood Pressure

2. HEART RATE
Resting Heart Rate: Number of times our heart beats in one minute.
Unit: Beats per minute or (BPM)
Maximum Heart Rate: The most your heart is capable of beating per minute.
Equation: age

3. Heart Rate
Target Heart Rate: A zone where your heart rate should be in order to be working aerobically.
Defined as: 60% to 80% of your Maximum heart rate.

4. Components of Heart Rate
Cardiac Output: The total amount of blood pumped out of the heart each minute.
Product of Heart rate X Stroke volume
(BPM) (ml)

5. An average cardiac output is:
4900ml/minute (at rest)
Average HR: 70 Beats per minute
Average SV: 70 ml/beat

6. Stroke Volume
Defined as: The amount of blood released from the heart each beat.
Units: Milliliters (ml)

7. Calculations
Cardiac Output
Equals
Heart Rate X
Stroke Volume

8. Let’s try some Pick up your calculator and figure out these problems:
HR= 80 BPM ; SV= 84 ml/beat
Cardiac output = 6720 ml/min

9. Problem two HR= 62 bpm; SV= 75 ml/beat Cardiac output = 4650 ml/minute
Can you figure out these problems if cardiac output is given but one of the other variables are not?

10. Try These Cardiac output= 5056 ml/min Stroke volume= 64 ml/beat
What would the heart rate be?
79 beats per minute

11. One More Cardiac output= 6468 ml/min Heart rate= 84 bpm
What would the stroke volume be?
77 ml/beat

12. Procedures For those who are having trouble, do the following:
Write out the actual formula CO= HR x SV
Substitute all of the given values = 70 x SV
Replace the missing value with an “X” = 70 x (X)
Solve for X.
X= 4900/70
X= 70
The stroke volume would equal 70 ml/beat.

13. Blood Pressure
Defined as: The amount of pressure inside of the blood vessels when the heart contracts and relaxes.

14. Blood Pressure Two types of pressures are measured:
1) Systolic pressure: Amount of pressure in the vessels when the heart contracts
2) Diastolic Pressure: Amount of pressure in the vessels when the heart relaxes.

15. Systolic and Diastolic
_________
80 (Diastolic)

16. Normal Blood Pressure A normal blood pressure reading is:
Systolic: From 120 – 129
Diastolic: From 80 – 89
Anything above these numbers is diagnosed as a certain degree of hypertension (High blood pressure)