Basal metabolic rate is usually by far the largest component of total caloric expenditure.
Thus your Basal Metabolic Rate is the number of calories you'd burn if you were to stay in bed all day. This makes BMR a variant of standard metabolic rate measurement that excludes the temperature data, a practice that has led to problems in defining "standard" rates of metabolism for many mammals.īMR can be responsible for burning up to 70% of the total calories expended as you will expend energy no matter what you're doing, even when sleeping. It follows the same criteria as BMR, but requires the documentation of the temperature at which the metabolic rate was measured. In bradymetabolic animals, such as fish and reptiles, the equivalent term Standard metabolic rate (SMR) is used. These criteria include being in a physically and psychologically undisturbed state, in a thermally neutral environment, while in the post-absorptive state (i.e., not actively digesting food). Proper measurement requires a strict set of criteria be met. It is reported in energy units per unit time ranging from watt (Joule/second) to ml O2/min or Joule per hour per kg body mass J/(h.kg)). Illness, previously consumed food and beverages, environmental temperature, and stress levels can affect one's overall energy expenditure as well as one's BMR.īasal Metabolic Rate (BMR) is the minimum calorific requirement needed to sustain life in a resting individual, or the amount of energy expended while at rest in a neutrally temperate environment, in the post-absorptive state (meaning that the digestive system is inactive, which requires about twelve hours of fasting in humans).īasal Metabolic Rate is defined as the minimal rate of energy expenditure per unit time by warm-blooded animals at rest. Basal Metabolic Rate (BMR) can be responsible for burning up to 70% of the total calories expended as you will expend energy no matter what you're doing, even when sleeping. Synopsis: Basal Metabolic Rate calculator shows the number of calories you burn when at rest in bed or resting metabolic rate RMR.
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