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Karvonen
Formula: Estimating Target Heart-Rate Zone
According to Beats Per Minute
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Formulas
should not be used to estimate target heart-rate zones for
persons using medications that alter heart rate. (In that
case, obtain training intensity parameters from your subject's
physician.)
In the following example, target heart-rate zone is calculated
for a 65-year-old individual with a resting heart rate of
70 beats per minute. The exerciser will work at a moderate
intensity level from 50 percent to 75 percent of maximum heart
rate (an appropriate range for the typical asymptomatic older
adult). |
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|
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220
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|
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-
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65
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|
|
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|
Age |
|
|
=
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155
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|
|
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Maximum
Heart Rate |
|
-
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70
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|
|
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Resting
Heart Rate |
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=
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85
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|
|
|
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Heart-Rate
Reserve |
|
X
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 00.5 |
X
|
00.75 |
Training
Heart-Rate Range |
|
|
=
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43
|
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=
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64
|
|
|
|
+
|
70
|
|
+
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70
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|
Resting
Heart Rate |
|
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=
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113
|
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=
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134
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|
Target
Heart-Rate Zone |
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| Note:
Conducting periodic 10-second pulse counts is a convenient
method of monitoring heart rate during aerobic exercise. To
determine the desirable 10-second count range, divide the
target rate values by 6. In this example, the minimum 10-second
count is 19 (113 divided by 6) and the maximum is 22 (134
divided by 6). |
