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What is the 'average' person's Basal Metabolic Rate (Metabolism) ?
-As a very rough guide, the average person's BMR is about half a calorie per pound of body weight, per hour. So, if you weigh 140
pounds you will use up approximately 70 calories an hour or 1680 calories per day doing nothing.
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How does Human Metabolism Work? - Resting Metabolic Rate (RMR)
-This is the amount of calories needed to run all essential functions and chemical reactions while in a rested and quiet state. RMR is
the largest part of total metabolism and accounts for 65 - 75% of calories burned in a day.
-If lean weight is lost from the body through increased protein metabolism the RMR decreases. This often
happens when people go on a strict diet, the body is forced into what's known as a "negative nitrogen balance" which means more protein is lost than what is replaced due to less protein/energy intake
. This imbalance causes a gradual loss in lean weight thus lowering the RMR.
-Many dieters limit the amount of lean weight loss with some type of intense exercise in order for muscles to develop a
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From the viewpoint of diet and weight loss, metabolism is the process whereby the body converts food into energy (or uses it for bodily repairs) or stores it as fat for future use. In simple terms, if
we have a faster metabolism we burn calories more efficiently and store less fat. If we have a slower metabolism we burn calories less efficiently and therefore store more calories as fat. In very si
mple terms, our Metabolic Rate is the rate (and efficiency) with which our body performs these metabolic tasks.
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Even if more exercise is undertaken a net loss of protein can occur if calorie intake is low.
-Remember dieters reduce their calorie intake but exercise uses extra carbs so the body must breakdown
extra protein to convert into carbohydrates. More carbs are needed because a less fit individual often has an untrained cardiovascular system and cannot supply enough oxygen for cells to burn fat for
energy during the exercise. Also if no exercise is performed the body has no need to use extra body fat because so little energy is required when inactive.
-Exercise can increase metabolism but the
trick for the unfit person is to perform the correct exercise and not cut calories too much too soon. To lose FAT weight fast the best way is to prepare the body by increasing the metabolism BEFORE c
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Factors that affect speed of metabolism
-BODY SIZE:
-WEIGHT GAIN
-BODY COMPOSITION:
-SEX:
-AGE
-DRUGS
-HEREDITARY
-HORMONES
-PSYCHOLOGICAL STATE
-TEMPERATURE
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Increase the metabolism for less chance of water weight loss!
-If more protein is lost more water is also lost because protein holds four times its weight in water. Think about if a person lost 5 p
ounds in a week, that would require an extra 17500 calories so how could all this weight possibly be fat. In fact over a week only about 1 pound of the 5 pounds lost would be fat, the rest would be mo
stly water!
-Protein and its fluid replacement is the main reason many dieters regain weight after a diet. Again think about if someone regained 4 pounds in a week then does it mean that person has
eaten an extra 14000 calories?
-Increasing the metabolism means the body has a reason to hold onto protein thus less water is lost
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To Continue
More Resources for
Metabolism
An Introduction To Metabolism
... (a) metabolism is the sum of all of the chemical reactions that occur within an organism ... anabolism is that aspect of metabolism involved in the net use of ...
Metabolism Comment
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Carbohydrate Metabolism
carbohydrate metabolism. use these links to navigate to selected parts of this section of the introductory metabolism module. the major source of dietary carbohydrate for humans is starch from consume
Metabolism Directory
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Fat Metabolism
quick navigation. search. take a survey. fat metabolism is a complex subject involving the liver, the pancreas and just about every stage of digestion. fat metabolism is also affected by the endocrine
Metabolism Comment
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