Predicting VO2MAX for Older Adults Using RPE and the 6 Minute Walk Test

Abstract

The purpose of this study was to determine the accuracy of estimating V02max from the 6MWT performance and RPE at the conclusion of the test. Subjects (N=28) included were 40-75yrs of age and ranged from sedentary to very active with V02rnax ranging 25- SOml!kg/min. Each subject performed an incremental maximal treadmill test using a modified Balke protocol. After 24-48Iu?s rest, subjects performed the 6MWT and gave terminal RPE using the Onmi Rating Scale, Borg Category Ratio (0-10), and classical Borg 6-20 scale. The Borg 6-20 notably had higher correlations than the other rating scales. Moderate correlation was suggested between 6MWD and measured V02max? The 3 rating scales used presented low to moderate correlations. Measured vs. predicted V02max presented moderate to good correlations. The average standardized residuals suggest all prediction equations are accurate within about 1 MET.