Keys Fitness 5.2 Recumbent User Manual
10
(MHR) = Maximum Heart Rate
(THR) = Target Heart Rate
220 - age = maximum heart rate (MHR).
MHR x .60 = 60% of your maximum heart rate.
MHR x .75 = 75% of your maximum heart rate.
For example, if you are 30 years old, your calculations will be as follows:
220 - 30 = 190
190 x .60 = 114 (low end or 60% of MHR)
190 x .75 = 142 (high end or 75% of MHR)
30 year-old (THR) Target Heart Rate would be 114-142.
See Table for additional calculations.
100%
85%
75%
60%
Serious
athletic
training range
Cardiovascular
conditioning
range
Fat burning
range
20
25 30
35
40 45
50
55
60
65
AGE
200
195
190
185
180
175
170
165
160
155
170
166
162
157
153
149
145
140
136
132
150
146
143
139
135
131
128
124
120
116
120
117
114
111
108
105
102
99
96
93
TARGET HEART RATE ZONE