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  2. Metabolic equivalent of task - Wikipedia

    en.wikipedia.org/wiki/Metabolic_equivalent_of_task

    The metabolic equivalent of task (MET) is the objective measure of the ratio of the rate at which a person expends energy, relative to the mass of that person, while performing some specific physical activity compared to a reference, currently set by convention at an absolute 3.5 mL of oxygen per kg per minute, which is the energy expended when sitting quietly by a reference individual, chosen ...

  3. VO2 max - Wikipedia

    en.wikipedia.org/wiki/VO2_max

    V̇O 2 max (also maximal oxygen consumption, maximal oxygen uptake or maximal aerobic capacity) is the maximum rate of oxygen consumption attainable during physical exertion. [1] [2] The name is derived from three abbreviations: "V̇" for volume (the dot over the V indicates "per unit of time" in Newton's notation), "O 2" for oxygen, and "max" for maximum and usually normalized per kilogram of ...

  4. Oxygen - Wikipedia

    en.wikipedia.org/wiki/Oxygen

    Oxygen is the third most abundant chemical element in the universe, after hydrogen and helium. [68] About 0.9% of the Sun's mass is oxygen. [19] Oxygen constitutes 49.2% of the Earth's crust by mass [69] as part of oxide compounds such as silicon dioxide and is the most abundant element by mass in the Earth's crust.

  5. High altitude breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/High_altitude_breathing...

    The Poisk regulator is a constant flow device which can be adjusted between 1 and 4 litres per minute in 0.25 litre per minute increments. [clarification needed] It has a mass of 0.35 kg. [7] The Summit system used a small mask with nasal cannula and delivered oxygen in pulses, activated by the pressure drop at the start of inhalation. This is ...

  6. Running economy - Wikipedia

    en.wikipedia.org/wiki/Running_economy

    Running economy (RE) a complex, multifactorial concept that represents the sum of metabolic, cardiorespiratory, biomechanical and neuromuscular efficiency during running. [1]: 33 [2] [3] Oxygen consumption (VO 2) is the most commonly used method for measuring running economy, as the exchange of gases in the body, specifically oxygen and carbon dioxide, closely reflects energy metabolism.

  7. Breathing - Wikipedia

    en.wikipedia.org/wiki/Breathing

    The number of respiratory cycles per minute is the breathing or respiratory rate, and is one of the four primary vital signs of life. [5] Under normal conditions the breathing depth and rate is automatically, and unconsciously, controlled by several homeostatic mechanisms which keep the partial pressures of carbon dioxide and oxygen in the ...

  8. 10,000 Steps Per Day Is A Myth—So How Much Should You Really ...

    www.aol.com/10-000-steps-per-day-120000168.html

    The 10,000 steps per day rule isn’t based in science. ... Prioritize “micro walks” by taking a five minute walking break after every 30 minutes or so of sitting. ... the Fitbit Charge 6 can ...

  9. Portable oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Portable_oxygen_concentrator

    Since their initial development, reliability has been improved, and POCs have between one and six settings which are not the same as liters per minute (LPM). [ 4 ] The latest models of intermittent flow only products have weighed in the range of from 2.8 to 9.9 pounds (1.3 to 4.5 kg), and continuous flow (CF) units have been between 10 and 20 ...