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 ?
Estimated maximal treadmill walking workload capacity (expressed in estimated metabolic equivalents [METs]) was calculated from the treadmill incline and velocity during the progressive GXT.
Designed to be the most accurate and user-friendly clinical-standard activity measurement tool, the RT3 is a pager-sized device worn on the waist that continuously tracks activity through the use of piezo-electric accelerometer technology that measures motion in three dimensions and provides triaxial vector data in activity units, metabolic equivalent units (METs) or kilocalories.
Activities were assigned metabolic equivalent (MET) conversion scores for every hour reported.
Men who engaged in three or more hours of Metabolic Equivalent Tasks (MET) a week - equivalent to jogging, biking, swimming or playing tennis for about a half-hour per week - had a 35 percent lower risk of overall mortality.
CRF was estimated as maximal aerobic capacity (MAC) expressed in metabolic equivalent (MET; measured via oxygen consumption) units.
The analysis showed that for each metabolic equivalent that exercise capacity increased, a person's risk of cardiovascular death, coronary death, or a hard coronary event was reduced by about 20%, Michael J.
A decline in activity of 10 metabolic equivalent times per week (brisk walking 2.
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.