Question

Target heart rate (220-age x .50 to 850)

Answer 1

It looks like you're trying to calculate the target heart rate for exercise using a formula based on age. The formula for determining the target heart rate zone typically involves the following steps:

1. **Calculate your maximum heart rate (MHR)**:
\[
\text{MHR} = 220 - \text{age}
\]

2. **Determine your target heart rate zone**:
Generally, the target heart rate zone for moderate-intensity exercise is 50% to 70% of your maximum heart rate. For vigorous intensity, it can be 70% to 85%.

Using the MHR from the first step:

- **50% of MHR**:
\[
\text{Target HR (50\%)} = \text{MHR} \times 0.50
\]

- **70% of MHR**:
\[
\text{Target HR (70\%)} = \text{MHR} \times 0.70
\]

So, the target heart rate range can be calculated as:
\[
\text{Target HR Range} = [\text{MHR} \times 0.50, \text{MHR} \times 0.70]
\]

For example, if you are 30 years old:
1. Calculate MHR:
\[
\text{MHR} = 220 - 30 = 190
\]
2. Calculate target heart rate range:
\[
\text{Target HR (50\%)} = 190 \times 0.50 = 95
\]
\[
\text{Target HR (70\%)} = 190 \times 0.70 = 133
\]

Therefore, the target heart rate range for a 30-year-old would be approximately 95 to 133 beats per minute.

If you would like to calculate this for a specific age, just let me know!