1. What is Heart Rate Reserve?

Heart Rate Reserve (HRR) is the difference between your maximum heart rate and resting heart rate. It represents the range of heart rates your cardiovascular system can utilize during physical activity.

2. How Does the Calculator Work?

The calculator uses the HRR formula:

Where:

• \( \text{Max HR} \) — Maximum heart rate (beats per minute)
• \( \text{Resting HR} \) — Resting heart rate (beats per minute)

Explanation: This simple calculation provides insight into your cardiovascular fitness level and exercise capacity.

3. Importance of HRR Calculation

Details: HRR is used to determine appropriate exercise intensity zones, especially in heart rate training programs. It's more personalized than using percentages of maximum heart rate alone.

4. Using the Calculator

Tips: Enter your maximum heart rate and resting heart rate in beats per minute (bpm). For best results, measure resting HR in the morning before getting out of bed.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure my maximum heart rate?
A: The most accurate method is through a graded exercise test. Age-predicted formulas (like 220-age) are less accurate.

Q2: What is a good HRR value?
A: Higher HRR generally indicates better cardiovascular fitness. Typical values range from 60-100 bpm for untrained individuals to 100+ for athletes.

Q3: How does HRR relate to exercise intensity?
A: Exercise intensity zones are often calculated as a percentage of HRR (e.g., 60-70% of HRR for moderate intensity).

Q4: Should HRR change over time?
A: With improved fitness, resting HR typically decreases, which increases your HRR even if max HR stays the same.

Q5: Are there limitations to HRR?
A: HRR doesn't account for individual variations in heart rate response to exercise. Always consult with a healthcare provider before starting an exercise program.