VO 2 FITTING: A Free and Open-Source Software for Modelling Oxygen Uptake Kinetics in Swimming and other Exercise Modalities

摘要

The assessment of oxygen uptake (VO 2 ) kinetics is a valuable non-invasive way to evaluate cardiorespiratory and metabolic response to exercise. The aim of the study was to develop, describe and evaluate an online VO 2 fitting tool (VO 2 FITTING) for dynamically editing, processing, filtering and modelling VO 2 responses to exercise. VO 2 FITTING was developed in Shiny, a web application framework for R language. Validation VO 2 datasets with both noisy and non-noisy data were developed and applied to widely-used models (n = 7) for describing different intensity transitions to verify concurrent validity. Subsequently, we then conducted an experiment with age-group swimmers as an example, illustrating how VO 2 FITTING can be used to model VO 2 kinetics. Perfect fits were observed, and parameter estimates perfectly matched the known inputted values for all available models (standard error = 0; p 0.001). The VO 2 FITTING is a valid, free and open-source software for characterizing VO 2 kinetics in exercise, which was developed to help the research and performance analysis communities.