Does the 6-minute walk test accurately predict maximal aerobic power (VO2 max) in healthy adults?
The 6-minute walk test on a 15-m track is a valid and practical tool for estimating VO2 max within approximately 1 MET in healthy adults.
The 6MWT performed along a 15-m track is a valid field test for predicting VO2 max of healthy adults with accuracy of about 1MET.
Mänttäri et al. (Thu,) studied this question.