Question
Calculating your target heart rate zone-for low to high intensity exercise. My rest heart beat is 85(RHR) I'm a 17 year old boy I'm 67 inches high and weight 120 pounds. I have to find y maximal heart rate. Then find my Lower End of your training Heart Rate ZONE(THR). Then find the Upper End of your training Heart Rate ZONE (THR).shows a formula (like a fraction) this is on the top line (weight in pounds) x 703 then the bottom line is (height in inches) then you have to show your work
Answers
GPT-4o mini
To calculate your target heart rate (THR) zones, we first need to determine your maximum heart rate (MHR) and then use that to calculate the THR zones.
### Step 1: Calculate Maximum Heart Rate (MHR)
The simplest formula for estimating MHR is:
\[
\text{MHR} = 220 - \text{Age}
\]
For you:
\[
\text{MHR} = 220 - 17 = 203
\]
### Step 2: Calculate Target Heart Rate (THR) Zones
The target heart rate zone is typically calculated as a percentage of your maximum heart rate. Common percentages for low, moderate, and high intensity exercise are:
- Low Intensity: 50% to 60% of MHR
- Moderate Intensity: 60% to 70% of MHR
- High Intensity: 70% to 85% of MHR
#### 2a: Calculate the Lower End of the THR Zone (50% of MHR)
\[
\text{Lower End THR} = \text{MHR} \times 0.50
\]
\[
\text{Lower End THR} = 203 \times 0.50 = 101.5 \text{ bpm}
\]
#### 2b: Calculate the Upper End of the THR Zone (85% of MHR)
\[
\text{Upper End THR} = \text{MHR} \times 0.85
\]
\[
\text{Upper End THR} = 203 \times 0.85 = 172.55 \text{ bpm}
\]
### Summary of Results
1. Maximum Heart Rate (MHR): **203 bpm**
2. Lower End of the THR Zone: **101.5 bpm** (rounded to 102 bpm)
3. Upper End of the THR Zone: **172.55 bpm** (rounded to 173 bpm)
### Additional Information
For your reference about the weight and height calculation you mentioned, the formula is not required for calculating THR, but it typically relates to Body Mass Index (BMI):
\[
\text{BMI} = \frac{\text{weight in pounds} \times 703}{\text{height in inches}^2}
\]
However, it seems unrelated to the THR calculation. If you need that for BMI, please let me know!
### Step 1: Calculate Maximum Heart Rate (MHR)
The simplest formula for estimating MHR is:
\[
\text{MHR} = 220 - \text{Age}
\]
For you:
\[
\text{MHR} = 220 - 17 = 203
\]
### Step 2: Calculate Target Heart Rate (THR) Zones
The target heart rate zone is typically calculated as a percentage of your maximum heart rate. Common percentages for low, moderate, and high intensity exercise are:
- Low Intensity: 50% to 60% of MHR
- Moderate Intensity: 60% to 70% of MHR
- High Intensity: 70% to 85% of MHR
#### 2a: Calculate the Lower End of the THR Zone (50% of MHR)
\[
\text{Lower End THR} = \text{MHR} \times 0.50
\]
\[
\text{Lower End THR} = 203 \times 0.50 = 101.5 \text{ bpm}
\]
#### 2b: Calculate the Upper End of the THR Zone (85% of MHR)
\[
\text{Upper End THR} = \text{MHR} \times 0.85
\]
\[
\text{Upper End THR} = 203 \times 0.85 = 172.55 \text{ bpm}
\]
### Summary of Results
1. Maximum Heart Rate (MHR): **203 bpm**
2. Lower End of the THR Zone: **101.5 bpm** (rounded to 102 bpm)
3. Upper End of the THR Zone: **172.55 bpm** (rounded to 173 bpm)
### Additional Information
For your reference about the weight and height calculation you mentioned, the formula is not required for calculating THR, but it typically relates to Body Mass Index (BMI):
\[
\text{BMI} = \frac{\text{weight in pounds} \times 703}{\text{height in inches}^2}
\]
However, it seems unrelated to the THR calculation. If you need that for BMI, please let me know!