metabolic equivalent

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Related to metabolic equivalent: basal metabolic rate

met·a·bol·ic e·quiv·a·lent (MET),

the oxygen cost of energy expenditure measured at supine rest (1 MET = 3.5 mL O2 per kg of body weight per minute); multiples of MET are used to estimate the oxygen cost of activity, for example, 3-5 METs for light work; more than 9 METs for heavy work.


A metabolic unit used to quantify the intensity of physical activity, which is defined as the ratio of the metabolic rate during exercise to the metabolic rate at rest. One MET corresponds to an energy expenditure of approximately 1 kca1Jkg of body weight/hour, or an oxygen uptake of 3.5 ml of O2 consumption/kg/hour. The MET unit is of use when planning the rehabilitation of patients who have had a myocardial infarction.

Metabolic Equivalents
1—Sleeping, reclining. 
2—Sitting (e.g., desk work, highway driving).
3—Very light exertion (e.g., office work, city driving). 
4—Light exertion, normal breathing (e.g., slow walking, mopping, golfing with a cart). 
5—Moderate exertion with deep breathing (e.g., normal walking, golfing on foot, callisthenics, raking leaves, downhill skiing, hunting, fishing, slow dancing, interior painting). 
6—Vigourous exertion with panting, overheating (e.g., slow jogging, speed-walking, tennis, swimming, cross-country skiing, fast biking, shovelling snow, heavy restaurant work, laying bricks, heavy gardening, heavy household repairs). 
7—Heavy exertion with gasping and sweating (e.g., fast jogging, running, continuous racquetball, touch football, moving heavy rocks, mixing cement, using a jackhammer, shovelling deep or heavy snow, hanging drywall).
8—Peak or extreme exertion (e.g., fast running, jogging uphill, aggressive sports with no rest, extreme work, pushing or pulling with one’s entire strength).

met·a·bol·ic equiv·a·lent

(MET) (met'ă-bol'ik ē-kwiv'ă-lĕnt)
The oxygen cost of energy expenditure measured at supine rest (1 MET = 3.5 mL O2 per kg of body weight per minute); multiples of MET are used to estimate the oxygen cost of activity.

metabolic equivalent

Abbreviation: MET
A unit used to estimate the metabolic cost of physical activity. One MET equals the uptake of 3.5 ml of oxygen per kilogram of body weight per minute. Approximate MET values of common physical activities range from sleeping (0.9), light housework (2-4), golf (4-5), and lap swimming (more than 6).
See also: equivalent
References in periodicals archive ?
Two key measures were higher on the aquatic treadmill test: maximal oxygen consumption (VO2max), reflecting heart and lung function during exercise; and metabolic equivalents (METs), reflecting energy use.
A modified peak exertion exercise treadmill test, with treadmill time expressed in metabolic equivalents, was used to assess CRF.
Doing 60 minutes of vigorous exercise per week decreased the odds of metabolic syndrome by 22% after adjusting for the influence of age, BMI, and total volume of exercise as measured by metabolic equivalents, she said.
Statin users expended less metabolic equivalents (METS); engaged in less moderate physical activity with 5.
Metabolic equivalents (METs) were used to record the men's cardiorespiratory fitness (CRF) and to place them into five CRF quintiles.
A person's fitness level or exercise capacity is how much physical work a person can accomplish measured in metabolic equivalents (METs), says Michael Crawford, manager of Cleveland Clinic's Cardiac Rehabilitation Program.
Metabolic equivalents (16) and the ACSM metabolic equations (2) were used to calculate weekly energy expenditure.
For example, Krause et al (6) assessed energy expenditure at work using predicted metabolic equivalents for work tasks, and leisure time physical activity by self-report of hours spent exercising.
The metabolic equivalents for each activity are multiplied by the frequency (number of days) of that activity and then summed to obtain a physical activity score.
SAN DIEGO -- The first clinical trial of adipose (fat) tissue-derived stem and regenerative cells (ADRCs) for the treatment of no-option chronic heart disease patients showed the following: the procedure was safe and feasible; it demonstrated a statistically significant improvement in maximum oxygen consumption (MVO2) and patients' aerobic capacity measured as metabolic equivalents (METS); and reduced the extent of infarct size in the left ventricle.
Study's lead author Ki-Cheol Son said that the exercise intensity of physical activity may differ between age groups and fitness levels, and there was not enough data on the metabolic equivalents of gardening tasks in different age groups to develop a garden exercise program for maintaining or improving health conditions.
Physical activity is therefore measured in METs, or metabolic equivalents.