Muscle oxygen saturation, also known as muscle oxygenation or SmO2 , represents the balance
between oxygen delivery and oxygen consumption in the working muscles. When an athlete engages in activities, several physiological responses can be observed including; increasing, steady or decreasing Sm02.
- Increasing Smo2 = greater muscle oxygen delivery compared to consumption.
- Steady Smo2 = balance between the muscle oxygen being delivered and consumed.
- Decreasing Sm02 = greater muscle oxygen consumption compared to delivery.
Remember: SmO2 values vary depending on the muscle group and individual.