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stepan [7]
3 years ago
15

Please help, I can't fail this!

Health
2 answers:
hoa [83]3 years ago
6 0
The heart rate reserve is equal to the difference between maximum heart rate and resting heart rate. Maximum heart rate is usually calculated by:
Hmax = 220 - age
Hmax = 220 - 40 = 180
HRR = Hmax - Hrest
HRR = 180 - 75
= 105
The answer is B
fomenos3 years ago
5 0
Resting rate - maximum rate.

40 year old - 220 maximum rate
180 - resting rate 
180 - 75 = 
105 
B

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