references
  
      Australian Journal of Basic and Applied Sciences: "The Effect of Short-Term Exercise on Oxygen Saturation in Soccer Players"
    
      Mayo Clinic: "Hypoxemia"
    
      Mayo Clinic: "Pulse Oximetry"
    
      Cleveland Clinic: "Hypoxemia"
    




An oximeter measures the amount of oxygen in your blood during exercise.

Image Credit: opolja/iStock/GettyImages

Image Credit: opolja/iStock/GettyImages

  • How a Pulse Oximeter Works
  • Why Measure
  • Levels During Exercise
  • When to See a Doctor

In healthy adults, normal pulse oximeter readings range from 95 to 100 percent, according to the Mayo Clinic. Low levels are those under 90 percent (hypoxemia).

Yes. Blood oxygen saturation initially drops during exercise as the body works to meet the demands of working muscles, according to a 2013 study ​Australian Journal of Basic and Applied Sciences​.

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      Australian Journal of Basic and Applied Sciences: "The Effect of Short-Term Exercise on Oxygen Saturation in Soccer Players"
    
      Mayo Clinic: "Hypoxemia"
    
      Mayo Clinic: "Pulse Oximetry"
    
      Cleveland Clinic: "Hypoxemia"