Question: what is the most accurate way to figure out an athlete's aerobic capacity?
Answer: Measuring aerobic fitness: Your VO2max value provides the most accurate assessment of aerobic fitness. The truest measurement of VO2max is done in a lab, however, it can be estimated. Healthy, fit adults can perform the Cooper 1.5-mile running test and out-of-shape adults can perform the Rockport 1-mile walking test.