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hjlf
3 years ago
9

1) TARGET HEART RATE

Health
1 answer:
Veseljchak [2.6K]3 years ago
6 0

Answer:

A 17 year old with a resting heart rate of 62 bpm has a maximum hearth rate of 203 bpm, a hearth rate reserve of 141 bpm and target hearth rate between 161 and 182 bpm

Explanation:

Target heart rate is a measure used to calculate the range of heart rate that should be maintained during intense exercise.

Knowing a person's age and resting heart rate (RHR), a target heart rate calculation can be made from the maximum heart rate (MHR) and the hearth rate reserve (HRR)

Data:

- Age: 17 years old

- RHR: 68 bpm

The maximum heart rate is calculated by subtracting age from a constant value of 220, so:

  • MHR = 220 - age
  • MHR = 220 - 17  
  • MHR = 203 bpm

HRR is calculated by subtracting the resting heart rate (RHR) from the MHR value:

  • HRR = MHR - RHR
  • HRR = 203 - 62
  • HRR = 141 bpm

THR is obtained by multiplying the HRR by 0.7 and 0.85, to obtain the range of heart rate in which the exercise can be performed.

  1. THR lower limit = (HRR x 0.7) + RHR                                                   Lower THR = (141 x 0.7) + 62 = 160.7 ≈ 161 bpm
  2. THR top limit = (HRR x 0.85) + RHR                                                         THR top = (141 x 0.85) + 62 =  181,85 ≈ 182 bpm

For the 17-year-old, the ideal target heart rate for an intense exercise is between the values of  161 and 182 bpm.

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