1. What is VO2max?

VO2max (maximal oxygen consumption) is the maximum rate of oxygen your body can utilize during intense exercise. It's considered the gold standard measure of cardiovascular fitness and aerobic endurance.

2. How Does the Calculator Work?

The calculator uses the cycling VO2max estimation equation:

Where:

• \( Power_{20min} \) — Your average power output over 20 minutes (watts)
• \( Weight \) — Your body weight (kg)
• 12 — Conversion factor

Explanation: This equation estimates your VO2max based on your power-to-weight ratio during sustained cycling effort.

3. Importance of VO2max Measurement

Details: VO2max is a key indicator of aerobic fitness and endurance performance potential. Higher VO2max values correlate with better cardiovascular health and athletic performance in endurance sports.

4. Using the Calculator

Tips: For best results, perform a 20-minute all-out time trial on your bike with a power meter. Enter your average power from the 20-minute effort and your current weight in kilograms.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this estimation?
A: This provides a reasonable estimate (±5-10%) for trained cyclists. Laboratory testing with gas analysis is required for exact measurement.

Q2: What are typical VO2max values?
A: Untrained individuals: 30-45 mL/kg/min; Trained athletes: 50-70+ mL/kg/min; Elite cyclists: 70-90+ mL/kg/min.

Q3: Can I improve my VO2max?
A: Yes, through consistent endurance training, especially high-intensity interval training (HIIT).

Q4: Does this work for indoor cycling?
A: Yes, as long as you have accurate power measurement from a smart trainer or power meter.

Q5: Why 20 minutes specifically?
A: 20 minutes is long enough to reach maximal sustainable effort while avoiding complete exhaustion that might occur in longer tests.