Importance of Basal Metabolic Rate Calculator
BMR
stands for Basal Metabolic Rate Calculator which estimates your basal metabolic rate. The
Basal Metabolic Rate is the amount of energy expended while resting in a
neutrally temperate environment with an inactive digestive system with about 12
hours of fast (a post-absorptive state). In such conditions the energy is used
only to maintain the organs say, heart, lungs, kidneys, intestines, liver, the
nervous system, sex organs, muscles, and skin. To calculate an accurate BMR a person's sympathetic nervous system should
be inactive, which means the person must be completely rested.
The basal metabolism is the
largest component of a person’s total needed calories. The daily calorie needed is the BMR value multiplied by a factor with a value
between 1.2 and 1.9, depending on the activity level. Mostly, the BMR is
estimated with equations summarized from statistical data. BMR decreases with age and with the loss of
lean body mass. Increase in the muscle mass increases BMR.
Also, since body composition differ between men and women, research shows
that a woman’s BMR is
typically around five to 10 percent lower than a man’s BMR. When you lose weight, your BMR decreases and fewer calories are required per
day. While, when you gain heavier muscle, your BMR will increase. The
measurements of carbon dioxide and oxygen analysis of the person who had fasted
for 12 hours and had eight hours of sleep is calculated by the experts in order
to calculate an accurate BMR. So, in 1990 Mifflin-St. Jeor introduced an equation which is now considered as the
standard equation when calculating BMR.
Mifflin St. Jeor Equation:-
For men: BMR = 10 x weight (kg) + 6.25 x height
(cm) – 5 x age (years) + 5.
For women: BMR = 10 x weight (kg) + 6.25 x height (cm) – 5 x age (years) –
161.
Dr. Sacheck says that stress levels and illness can
also slightly or moderately change the BMR
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