Question

Imagine that you are working with a 45-year-old female client who has a resting heart rate of 75 beats per minute. Using the Karvonen formula, calculate her target heart rate using exercise intensity of 60%

Answer 1

taget heart rate = 135 bpm

Step-by-step explanation:

The Karvonen method is considered one of the most effective for determining training zones, ie intense, moderate, light, because it considers the basal heart rate, which represents how your current fitness is. The athlete can use the formula to follow a rhythm worksheet and instead of calculating the suggested percentage based on the maximum heart rate, the formula to have the number of heartbeats that best represents the effort to be stimulated is applied.

To put this formula into practice you need to measure your basal heart rate (which is 75).

The formula:

220 - age = HR Max. --> (220 - 45 = 175, which is the max. heart rate)

Basal heart rate = 75

Maximum heart rate = 175

Exercise intensity of 60%

175 - 75 = 100

100 x 0.6 + 75 = 135 bpm

Answer 2

The correct answer is 135 beats per minute.

Step-by-step explanation:

Resting heart Rate= 75

Maximum Heart Rate= 220 - 45 = 175

Heart Rate Reserve= HRR = Maximum Heart Rate - Resting Heart Rate

= 175 - 75 = 100

Now we need to know the target heart rate using exercise intensity of 60%

So the formula is HRR*60%

= 100*60%

= 100*0.6

= 60

So target training zone = 60+Resting heart rate

= 60+75

= 135

So according to the Karvonen formula, the 45 year old lady must have 135 beats per minute to reach 60% exercise intensity.