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

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: 220 - age

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.

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)

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

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

Calculations Cardiac Output Equals Heart Rate X Stroke Volume

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

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?

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

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

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. 4900= 70 x SV Replace the missing value with an “X”. 4900= 70 x (X) Solve for X. X= 4900/70 X= 70 The stroke volume would equal 70 ml/beat.

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

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.

Systolic and Diastolic _________ 80 (Diastolic)

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)