Calculate the heart rate reserve for a 40-year-old with a resting heart rate of 75. a. 80.5 b. 105 c. 115.5 d. 130.2

Answer : (b). 105 bpm

Explanation :

given that,

Age = 40 years-old

Resting heart rate = 75 bpm

We know that,

Maximum heart rate = 220- Age

Maximum heart rate = 220-40 = 180 bpm

Heart rate reserve = Maximum heart rate - Resting heart rate

Heart rate reserve  = 180 bpm - 75 bpm

Heart rate reserve = 105 bpm

Hence, this is the required solution.

b.transmitters send radio waves, and receivers capture radio waves.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.