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basal metabolic rate

The minimum energy required by the body to sustain metabolism, measured by oxygen consumption and expressed in kilojoules per square meter of body surface.

basal metabolic rate

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A Dictionary of Biomedicine (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...basal metabolic rate The BMR is the amount of energy being expended when in a state of complete rest, but not asleep, and not involved in digestion. A simpler measurement is the resting metabolic rate...

basal metabolic rate

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A Dictionary of Zoology (5 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Science and technology, Life Sciences
Length:
42 words

... metabolic rate ( BMR ) The minimum metabolic rate needed to sustain the life of an organism that is in an environment at a temperature equal to its own. The BMR is measured in organisms in a post-absorbtive, resting...

basal metabolic rate

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A Dictionary of Public Health (2 ed.)

Reference type:
Subject Reference
Current Version:
2018

...basal metabolic rate The minimum energy required by the body to sustain metabolism, measured by oxygen consumption and expressed in kilojoules per square meter of body surface. ...

basal metabolic rate

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World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
63 words

... metabolic rate ( BMR ) Amount of energy required to sustain basic life processes, including breathing and circulation. It is calculated by measuring oxygen consumption. Metabolic rate increases above BMR during physical activity or fever, or under the influence of some drugs. It falls below BMR during sleep, general anaesthesia or starvation. BMR is highest in children and decreases with age. See also ...

basal metabolic rate

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A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

... metabolic rate n. The rate at which metabolism occurs in the body at rest, 12 to 14 hours after eating, usually measured in kilocalories of heat generated per square metre of body surface area per hour. See also Calorie . BMR ...

basal metabolic rate

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A Dictionary of Biology (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Life Sciences
Length:
152 words

...basal metabolic rate ( BMR ) The rate of energy metabolism required to maintain a nongrowing, unstressed, endothermic animal at rest. BMR is measured in terms of heat production per unit time and is usually expressed in kilojoules of heat released per square metre of body surface per hour (kJm −2 h −1 ). It indicates the energy consumed in order to sustain such vital functions as heartbeat, breathing, nervous activity, active transport, and secretion. Different tissues have different metabolic rates (e.g. the BMR of brain tissue is much greater than that of...

basal metabolic rate

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Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
64 words

... metabolic rate abbr. : BMR; the rate of energy metabolism of an animal at rest but not asleep. It is measured with the animal in a ‘comfortable’ ambient temperature, and in the postabsorptive state, at least 12 hours after taking food. It may be determined from the oxygen consumption and carbon dioxide (and urinary nitrogen) excretion, or from the heat production of the...

basal metabolic rate

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A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

... metabolic rate ( BMR ) The rate at which an animal must release energy metabolically in order to maintain itself at rest. Since the BMR of different body tissues varies, the BMR for a particular animal is determined by the composition of its tissues; for a group of animals BMR is inversely proportional to body weight (i.e. small animals usually have a higher BMR than large...

basal metabolic rate

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A Dictionary of Ecology (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... metabolic rate ( BMR ) The rate at which energy must be released metabolically in order to maintain an animal at rest. Since the BMR of different body tissues varies, the BMR for a particular animal is determined by the composition of its tissues; for a group of animals BMR is inversely proportional to body weight (i.e. small animals usually have a higher BMR than large...

basal metabolic rate

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A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
52 words

...basal metabolic rate ( BMR ) The amount of energy the body requires to keep functioning at rest to maintain vital functions such as circulation, respiration, digestion, and the maintenance of body temperature. The BMR is influenced by age, sex, and thyroid activity and is generally higher in men than...

basal metabolic rate

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Food and Fitness: A Dictionary of Diet and Exercise (2 ed.)

Reference type:
Subject Reference
Current Version:
2016

... metabolic rate ( BMR ) The basal metabolic rate is the minimum rate at which the body uses energy at complete rest. It is the minimum amount of energy needed to keep the body alive and is the largest component of an average person's daily energy expenditure. The BMR is usually expressed simply as kilocalories per day or in units of energy per unit surface area (or per kilogram body mass) per unit time. It is very difficult to determine the absolute minimum metabolic rate, but estimates are usually standardized by being made when a person is resting...

basal metabolic rate

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The Oxford Companion to the Body

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology, Life Sciences
Length:
211 words

...the metabolism of the vast majority of body cells requires and consumes oxygen, the BMR can be estimated by measuring the rate at which oxygen is taken up and calculating the energy equivalent. A typical value for a man could be 350 litres of oxygen = 1700 kcal (7000 kJ) per day; or just under 0.25 litre, and just over 1 kcal per minute. Rigorous conditions for basal measurements are difficult to attain; more often the metabolic rate is measured when simply at rest; it varies with body weight and composition, but also between individuals who are similar in...

basal metabolic rate

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The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007
Subject:
Science and technology, Medicine and health
Length:
138 words

... metabolic rate ( BMR ) The minimal rate of metabolism of an individual at complete rest, at normal body temperature who is not digesting or absorbing food. BMR represents the lowest rate of energy use that can sustain life. It is usually expressed in units of energy per unit surface area per unit time. BMR is estimated when the subject is resting quietly in a laboratory under optimal conditions, after at least 8 h sleep and 12 h since the last meal. BMR for adults is between 1200 and 1800 kcal day −1 . It is relatively constant for a particular...

basal metabolic rate

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A Dictionary of Food and Nutrition (4 ed.)

Reference type:
Subject Reference
Current Version:
2014

... metabolic rate ( BMR ) The energy cost of maintaining the metabolic integrity of the body, nerve and muscle tone, respiration, and circulation. It depends on the amount of metabolically active body tissue, and can be calculated from body weight, height, and age: For children the BMR also includes the energy cost of growth. Experimentally, BMR is measured as the heat output from the body, or the rate of oxygen consumption, under strictly standardized conditions, 12–14 hours after the last meal, completely at rest (but not asleep) and at an environmental...

basal metabolic rate

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The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

... metabolic rate Abbrev.: ...

basal metabolic rate

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Oxford Dictionary of English (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
52 words
basal metabolic rate

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New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
64 words
basal metabolic rate

basal metabolic rate  

Reference type:
Overview Page
The minimum energy required by the body to sustain metabolism, measured by oxygen consumption and expressed in kilojoules per square meter of body surface.
standard metabolic rate

standard metabolic rate  

(SMR)The minimum metabolic rate needed to sustain life at a specified temperature. The SMR is measured in organisms that are resting in a post-absorptive state and in darkened conditions. Compare ...
resting metabolic rate

resting metabolic rate  

The metabolic rate of a person at rest. When the resting metabolic rate is measured early in the morning in a laboratory under optimal conditions of quiet and relaxation, following an overnight fast ...

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