Validation of a Time-to-Exhaustion-Derived V ˙ O 2 max Prediction Equation and Secondary Criteria Agreement: The CARDIA Study.

ABSTRACT:

Introduction

Measuring maximal oxygen consumption V˙O2max during a graded exercise test (GXT) poses challenges in population-based studies. We examined the relationship between GXT duration (GXTd) and V˙O2max to create a prediction equation for estimating V˙O2max from GXTd. We also assessed the agreement among secondary V˙O2max criteria: respiratory exchange ratio (RER; ≥1.10), maximal heart rate (mHR; ≥85% age-predicted), and ratings of perceived exertion (RPE; >17).

Methods

Data include 580 Coronary Artery Risk Development in Young Adults (CARDIA) participants (55.9% female, 38.6% Black) who attended the year 35 exam (age 54-66 yr) and completed a GXT with gas analysis. Pearson correlation coefficients were computed between GXTd (seconds) and V˙O2max (mL·kg^-1·mi

SUBMITTER: Hornikel B 

PROVIDER: S-EPMC12692497 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature