 LOWER LIMIT 
UPPER LIMIT 
1. Determine the maximum heart rate according to the given age.
(220age=max heart rate)"MHR".

220


220



=

= 
2. Determine the resting heart rate. (Take pulse for six seconds then add a zero prior to any exercise).
SUBTRACT RHR from MHR. 




 = 
= 
3. Multiply the percentage for the given limit with
the answers on
Line A. (Lower Limit=60% or 0.60; Upper Limit=90% or 0.90). 
X 
X 

=

=

4. Add the original RHR figure back into the equation.
Then place the answer on Line B. 
+ 
+ 
 = 
= 
6. ROUND the answers from Line B.
a. Round the numbers UP if the number
after the decimal point is 5 or greater.
i.e. 124.7=125
b. Round the numbers DOWN if the number
after the decimal point is 4 or lower.
i.e. 178.2=178 
Lower Limit Rounded Number

Upper Limit Rounded Number

The Target Heart Rate Zone is: 
Lower Limit
Answer

Upper Limit
Answer
