Estimate Your VO2 Max

VO2 max measures the maximum rate at which your body can consume oxygen during exercise, expressed in milliliters per kilogram of body weight per minute (ml/kg/min). Higher values indicate better cardiovascular fitness. Elite endurance athletes typically score above 70, while sedentary adults may fall below 30. Regular aerobic training can improve VO2 max by 15 to 20 percent over several months.

The Cooper test uses the distance covered in a maximal 12-minute run to estimate VO2 max. The Rockport test is a submaximal alternative that uses 1-mile walk time and finishing heart rate along with body weight and age. The Uth method estimates VO2 max from the ratio of maximum to resting heart rate, requiring no physical test at all.

Your VO2 max is ranked against ACSM population norms for your age and gender. The fitness age feature translates your score into the age decade where it would be considered average. A 45-year-old with a fitness age of 30 has cardiovascular fitness typical of someone 15 years younger; a powerful motivator for continued training.

High-intensity interval training (HIIT) and sustained threshold runs are the most effective methods for improving VO2 max. Consistency matters more than volume; three to four sessions per week of 20 to 40 minutes at high intensity will produce measurable gains within 6 to 8 weeks for most individuals.