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The basal metabolic rate accounts for about 70% of the daily calorie expenditure by individuals. It is influenced by several factors. In humans, BMR typically declines by 1–2% per decade after age 20, mostly due to loss of fat-free mass, [3] although the variability between individuals is high. [4]
Once you have your BMR, multiply it by an activity factor to determine your total daily energy expenditure (TDEE). TDEE is the number of calories you need to maintain your current weight based on ...
An abnormal basal metabolic rate is not necessarily indicative of disease; a number of physiological factors can alter the BMR by influencing cellular metabolic activity. [1] For instance, males are more likely than females to have a high BMR, and in women, the BMR may rise to abnormal levels during pregnancy or lactation. [2]
BMR is determined by factors like: Age. Sex. ... You can reduce your calorie intake by eating foods lower in calories and increase your calorie output by doing more physical activity and changing ...
BMR can vary based on several factors, and may even fluctuate throughout your life, says Dimitar Marinov, MD, an assistant professor at the Medical University of Varna, Bulgaria. Factors that ...
BMR is also affected by acute illnesses and increases with burns, fractures, infections, fevers, etc. It can be measured via direct and indirect calorimetry. However, it is also possible to approximately estimate BMR using several equations that factor in a person's age, sex, height, and weight. [18]
Aging is the main factor that leads to a change in body composition. These are mainly decreases in muscle strength, increases in total fat mass, and decreases in peripheral subcutaneous fat, [10] all of which can also be attributed to a decline in exercise and reduced basal metabolic rate. Hormonal changes also occur as a person ages, resulting ...
The Harris–Benedict equation (also called the Harris-Benedict principle) is a method used to estimate an individual's basal metabolic rate (BMR).. The estimated BMR value may be multiplied by a number that corresponds to the individual's activity level; the resulting number is the approximate daily kilocalorie intake to maintain current body weight.