resting metabolic rate


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rest·ing met·a·bol·ic rate

(RMR) (rest'ing met'ă-bol'ik rāt)
Minimum number of calories needed to support basic functions, including breathing and circulation.

metabolic rate

the rate of energy expenditure during any given state of rest or specified activity. Commonly assessed in terms of respiratory gas exchange (indirect calorimetry) by obtaining values for oxygen uptake and carbon dioxide output, and relating these to the equivalent release of energy in kJ or kcal per minute. basal metabolic rate (BMR) the rate of energy expenditure which is required at complete rest for all cellular function, to maintain the systems of the body and to regulate body temperature. It is measured before the person rises in the morning after fasting for at least 12 hours, requiring an overnight stay under controlled conditions in the laboratory. BMR is influenced by age, sex, body size and fat-free mass. In most sedentary healthy adults it accounts for approximately 60-80% of total daily energy expenditure, amounting to ∼4000-7000 kJ per 24 hours for individuals with body mass within the normal range. In elite endurance athletes during days of competition or training, BMR may represent only 38-47% of total daily energy expenditure. resting metabolic rate (RMR) is more commonly measured, since it allows the person to sleep at home, to travel to the laboratory in the morning and to rest there before RMR is assessed. Values for BMR and RMR usually differ by less than 10% and sometimes are used interchangeably. RMR is typically close to 4.2 kJ per kg of body mass per hour or 3.5 mL O2 utilized per kg of body mass per minute. See also Douglas bag method, oxygen consumption.
References in periodicals archive ?
Probably the most significant outcome of this study is the different responses between the two groups regarding the resting metabolic rate (Fig.
Validation of several established equations for resting metabolic rate in obese and nonobese people.
2) The other 60% of burned calories comes from your resting metabolic rate.
Physical activity-induced energy expenditure is determined by subtracting the resting metabolic rate from the total, and multiplying this value by 0.
It is important to understand the resting metabolic rate because if the human body does not receive enough calories per day to maintain basic life function, the body literally "thinks" it is starving to death.
In the northern part of their geographic range, the Arkansas and Missouri Agkistrodon piscivorus show an elevated resting metabolic rate at low temperatures.
Most papers reported resting metabolic rate, as opposed to standard metabolic rate, which is measured using fasting animals.
The data were adjusted for covariates including resting metabolic rate, level of physical activity, and smoking habits.
This is called increasing your resting metabolic rate.
Resting metabolic rate (RMR) approximates the BMR when it is not possible to meet all of the above conditions.
That is, the resting metabolic rate (RMR) drops as the body experiences something akin to what happened millennia ago when the hunt failed and in order to improve its chances for survival the body would drop its RMR over a relatively long period of time.