Automatic detection of maximal oxygen uptake and ventilatory threshold.

Area of Science:

• Exercise Physiology
• Sports Science
• Respiratory Physiology

Background:

• Maximal oxygen uptake (VO2max) and ventilatory threshold (VT) are crucial physiological markers.
• Objective characterization of metabolic and respiratory systems relies on these measurements.
• Various techniques exist for identifying VO2max and VT.

Purpose of the Study:

• To review existing methods for VO2max and VT identification.
• To assess the performance of different techniques using experimental data.
• To implement and evaluate automatic procedures for parameter detection.

Main Methods:

• Analysis of criteria for detecting VO2max and VT from respiratory gas-exchange data.
• Implementation of automatic procedures for parameter identification.
• Application of procedures to experimental data to assess reliability and noise sensitivity.

Main Results:

• The plateau- and RISE-105- procedures are most reliable for automatic VO2max determination.
• Respiratory exchange ratio, ventilatory equivalent for O2, and PETO2 criteria are most reliable for automatic VT estimation.

Conclusions:

• Reliable automatic procedures for VO2max and VT have been identified.
• These findings aid in objective physiological assessment in exercise settings.
• The study provides evidence-based recommendations for method selection.