1. What is Anaerobic Threshold?

The anaerobic threshold (AT) is the exercise intensity at which lactate starts to accumulate in the blood. It represents the transition between aerobic and anaerobic metabolism during exercise.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( AT \) — Anaerobic Threshold (bpm)
• \( MHR \) — Maximum Heart Rate (bpm)

Explanation: This formula estimates that the anaerobic threshold occurs at approximately 85% of your maximum heart rate.

3. Importance of AT Calculation

Details: Knowing your AT helps in designing effective training programs, improving endurance performance, and monitoring fitness progress.

4. Using the Calculator

Tips: Enter your maximum heart rate in beats per minute (bpm). For most accurate results, use a measured MHR from a stress test rather than an age-predicted value.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this estimation method?
A: While simple, this method provides a reasonable estimate for most people. For precise measurement, laboratory testing is recommended.

Q2: What's the difference between AT and VO2 max?
A: VO2 max measures maximum oxygen consumption, while AT identifies the exercise intensity where lactate begins to accumulate rapidly.

Q3: Can AT be improved with training?
A: Yes, endurance training can increase your AT, allowing you to exercise at higher intensities before lactate accumulates.

Q4: How often should I test my AT?
A: Every 4-6 weeks if you're in serious training, or whenever you want to assess progress in your fitness program.

Q5: Are there other ways to estimate AT?
A: Yes, methods include lactate threshold testing, ventilatory threshold measurement, and field tests like the Conconi test.