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The steady state oxygen consumption used to define running economy demonstrates the energy cost of running at sub maximal speeds. This is often measured by the volume of oxygen consumed, either in liters or milliliters, per kilogram of body weight per minute (L/kg/min or mL/kg/min). [6]
Cycling, rowing, swimming and running are some of the main sports that push VO 2 levels to the maximum. Ventilatory threshold and lactate threshold are expressed as a percentage of VO 2 max; beyond this percentage the ability to sustain the work rate rapidly declines as high intensity but short duration energy systems such as glycolysis and ATP ...
The results of the test can also be used to estimate maximum oxygen consumption during exercise . [3] [4] The Tecumseh step test was originally employed in the Tecumseh Community Health Study run between the 1950s and 60s. [5] During this study, 2696 men and 2568 women aged between 10 and 69 years old performed the Tecumseh step test. [2]
For the comfort of the patient this is done over a 15-second time period before being extrapolated to a value for one minute expressed as liters/minute. Average values for males and females are 140–180 and 80–120 liters per minute respectively. [medical citation needed]
vV̇O 2 max (velocity at maximal oxygen uptake), also known as maximal aerobic speed (MAS), is an intense running or swimming pace. This is the minimum speed for which the organism's maximal oxygen uptake (VO 2 max) is reached, after a few minutes of constantly maintaining this exercise intensity.
It is common to compare the energy expended to run at a given fixed speed, usually by measuring oxygen consumed while running at a fixed speed (ml/kg/min). [8] This method does provide a comparison of economy at this given speed, but may often not provide an adequate representation of economy as a predictor of performance. [ 8 ]
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.
The test requires participants to run 20 meters back and forth across a marked track keeping time with beeps. Every minute or so, the next level commences: the time between beeps gets shorter; participants must run faster. If a participant fails to reach the relevant marker in time, they are cautioned. A second caution ends the test for that ...
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