Why the study?
Traditional endurance training intensity measures like lactate and ventilatory thresholds provide delayed indirect indicators of anaerobic metabolism, creating interest in muscle oximetry to directly detect critical exercise thresholds.
Does muscle oximetry based on NIRS accurately detect critical exercise thresholds in athletes compared to traditional methods?
Does muscle oximetry based on NIRS accurately detect critical exercise thresholds in athletes compared to traditional methods?
NIRS-based muscle oximetry offers a practical, non-invasive alternative to blood lactate and gas exchange for monitoring exercise intensity and thresholds in athletes.
Cardiorespiratory performance is one of the most important determinants of success in sports activities. In order to better prepare for sports challenges, the athletes must be exposed to appropriate training which should be based on individualized physiological parameters during activity. Even though training intensity can be determined in many different ways, the endurance training intensity is often quantified by the lactate thresholds obtained from the blood sampling or the ventilator thresholds obtained from the gas exchange. These data represent delayed indirect indicators of an increased anaerobic ATP resynthesis. The muscle oximetry, based on near-infrared spectroscopy (NIRS), represents non-invasive method that enables the information about the changes in oxygenation in hemoglobin, and potentially represents a very suitable technique to detect a critical exercise threshold directly in the exercising muscle.
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Međedović et al. (2021) studied this question.
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