What is the Aastrand bicycle test?

The Aastrand test is a submaximal cycle ergometer test developed by Astrand and Ryhming. It estimates VO₂max from heart rate response to a 5-6 minute steady-state workload.

How is VO₂max calculated?

VO₂max is estimated using workload, heart rate, and body weight, then adjusted for age using correction factors. The formula differs for men and women.

Is this test accurate?

The Aastrand test provides a reasonable estimate of VO₂max for most people (±10-15%). Lab-based direct gas analysis remains the gold standard.

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Aastrand Test

Estimate VO₂max with the Aastrand-Ryhming cycle test

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Gender

Age

Weight (kg)

Workload (watts)

Heart Rate after 5 min (bpm)

Based on the Astrand-Ryhming nomogram. Adjusts for age using standard correction factors. (Astrand & Rodahl, Textbook of Work Physiology, 1986)

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Enter your weight, workload, heart rate, age and gender to estimate VO₂max

Last updated: July 25, 2026Author: HealthFitCalc TeamCategory: Cardiovascular FitnessReviewed by Health Professionals

References

Astrand PO, Rodahl K. Textbook of Work Physiology. 3rd ed. McGraw Hill, 1986.
American College of Sports Medicine (ACSM) - Guidelines for Exercise Testing
British Association of Sport and Exercise Sciences (BASES) - Physiological Testing Guidelines

About Aastrand Bicycle Test

How It Works

Pedal a cycle ergometer at a steady workload for 5 minutes while monitoring heart rate. The formula uses the relationship between heart rate, workload, and oxygen consumption to estimate VO₂max with age adjustment.

How to Interpret Results

Your estimated VO₂max is compared to age and gender-specific norms. Higher values indicate better cardiorespiratory fitness and are associated with lower health risks.

Training Tips

To improve your score, incorporate regular cycling, interval training, and steady-state cardio. Aim for 150+ minutes of moderate-intensity exercise per week.

Limitations

This submaximal test assumes a linear HR-VO₂ relationship. Factors like medications, fatigue, and test familiarity may affect accuracy.

HealthFitCalc TeamHealth & Fitness Editors

Last reviewed: July 25, 2026

Medical Disclaimer: This calculator is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or qualified health provider with any questions regarding your health.