1. What is Heart Rate Recovery (HRR)?

Heart Rate Recovery (HRR) is the difference between peak heart rate during exercise and heart rate after a specific recovery period (typically 1-2 minutes). It's a measure of cardiovascular fitness and autonomic nervous system function.

2. How Does the Calculator Work?

The calculator uses the simple HRR equation:

Where:

• \( HR_{peak} \) — Maximum heart rate achieved during exercise (bpm)
• \( HR_{recovery} \) — Heart rate after 1-2 minutes of recovery (bpm)

Explanation: A higher HRR indicates better cardiovascular fitness and autonomic function.

3. Importance of HRR Measurement

Details: HRR is an important prognostic marker. Slower HRR is associated with increased cardiovascular risk and mortality.

4. Using the Calculator

Tips: Enter your peak exercise heart rate and your heart rate after 1-2 minutes of recovery. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal HRR value?
A: In healthy adults, HRR ≥12 bpm after 1 minute is normal. Values ≥22 bpm after 2 minutes are considered good.

Q2: How is HRR measured clinically?
A: Typically measured during a stress test, recording heart rate at peak exercise and after 1-2 minutes of recovery.

Q3: What affects HRR?
A: Fitness level, age, medications (especially beta blockers), and autonomic nervous system function.

Q4: Can I improve my HRR?
A: Yes, regular aerobic exercise can improve HRR over time as cardiovascular fitness improves.

Q5: Are there 2025-specific HRR norms?
A: The 2025 norms maintain similar thresholds to previous years, with slight age-adjusted modifications for older populations.