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  2. VO2 Max Declines as You Age—Use These Tips to Keep It Steady

    www.aol.com/vo2-max-declines-age-tips-150000257.html

    “VO₂ max is the amount of oxygen that you can breathe in, transport to the muscle, and utilize during maximal exertion and aerobic exercise,” Todd Buckingham, Ph.D., exercise physiologist at ...

  3. Hypoxemia - Wikipedia

    en.wikipedia.org/wiki/Hypoxemia

    Tissue hypoxia refers to low levels of oxygen in the tissues of the body and the term hypoxia is a general term for low levels of oxygen. [2] Hypoxemia is usually caused by pulmonary disease whereas tissue oxygenation requires additionally adequate circulation of blood and perfusion of tissue to meet metabolic demands.

  4. Oxygen saturation (medicine) - Wikipedia

    en.wikipedia.org/wiki/Oxygen_saturation_(medicine)

    Normal arterial blood oxygen saturation levels in humans are 96–100 percent. [1] If the level is below 90 percent, it is considered low and called hypoxemia . [ 2 ] Arterial blood oxygen levels below 80 percent may compromise organ function, such as the brain and heart, and should be promptly addressed.

  5. The problem with pulse oximeters your doctor probably doesn’t ...

    www.aol.com/news/problem-pulse-oximeters-doctor...

    The gold standard and most accurate way of testing whether a person has normal oxygen levels is to stick a needle into a person’s wrist and draw blood. An arterial blood draw, as it’s called ...

  6. Aerobic conditioning - Wikipedia

    en.wikipedia.org/wiki/Aerobic_conditioning

    Although exercising at lower intensities improves aerobic conditioning, the most rapid gains are made when exercising close to the anaerobic threshold. [17] This is the intensity at which the heart and lungs can no longer provide adequate oxygen to the working muscles and an oxygen debt begins to accrue; at this point the exercise becomes ...

  7. Hypoxia (medicine) - Wikipedia

    en.wikipedia.org/wiki/Hypoxia_(medicine)

    Hypoxia is a condition in which the body or a region of the body is deprived of adequate oxygen supply at the tissue level. [1] Hypoxia may be classified as either generalized, affecting the whole body, or local, affecting a region of the body. [2]

  8. Effects of high altitude on humans - Wikipedia

    en.wikipedia.org/wiki/Effects_of_high_altitude...

    The concentration of oxygen (O 2) in sea-level air is 20.9%, so the partial pressure of O 2 (pO 2) is 21.136 kilopascals (158.53 mmHg). In healthy individuals, this saturates hemoglobin, the oxygen-binding red pigment in red blood cells. [8]

  9. Hypopnea - Wikipedia

    en.wikipedia.org/wiki/Hypopnea

    The disruption in breathing causes a drop in blood oxygen level, which may in turn disrupt the stages of sleep. Daytime hypopnea events, however, are mostly limited to those with severely compromised respiratory muscles , as occurs in certain neuromuscular diseases or compromised central respiratory drive , as occurs in conditions such as ...