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Metabolic equivalents (METS) in exercise testing, exercise prescription, and evaluation of functional capacityM Jetté et al. Clin Cardiol. 1990 Aug. Free article AbstractOne metabolic equivalent (MET) is defined as the amount of oxygen consumed while sitting at rest and is equal to 3.5 ml O2 per kg body weight x min. The MET concept represents a simple, practical, and easily understood procedure for expressing the energy cost of physical activities as a multiple of the resting metabolic rate. The energy cost of an activity can be determined by dividing the relative oxygen cost of the activity (ml O2/kg/min) x by 3.5. This article summarizes and presents energy expenditure values for numerous household and recreational activities in both METS and watts units. Also, the intensity levels (in METS) for selected exercise protocols are compared stage by stage. In spite of its limitations, the MET concept provides a convenient method to describe the functional capacity or exercise tolerance of an individual as determined from progressive exercise testing and to define a repertoire of physical activities in which a person may participate safely, without exceeding a prescribed intensity level. Similar articles
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What is relative oxygen consumption?It describes the rate of oxygen use in liters per minute, and is usually expressed relative to body mass. Calculation of oxygen uptake in the field necessitates measurements of air flow rates during breathing, and of oxygen and carbon dioxide concentrations in expired respiratory gas.
What is oxygen consumption a measure of?VO2 max, or maximal oxygen consumption, refers to the maximum amount of oxygen that an individual can utilize during intense or maximal exercise. This measurement is generally considered the best indicator of cardiovascular fitness and aerobic endurance.
What is the unit used to compare oxygen consumption between individuals?VO2 max is expressed in either units of liters (L) of O2 per minute (min), which is an absolute number or milliliters (ml) of O2 per minute per kilogram (kg) of body weight, which is a relative number and what people typically use when they talk about VO2 max numbers.
What is relative oxygen uptake measured in?Relative VO2 = milliliters per minute per kilogram (a unit of mass) which is rewritten as milliliters per kilogram per minute or mL/kg/min (1,000 mL = 1.0 L). For example, if Peter weighs 220 lbs. (100 kg) and has a VO2max of 4.0 L/min, his relative VO2max would be 40 mL/kg/min (refer to Table 1-1 below).
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When referring to an individuals relative oxygen consumption. it is relative to what:
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