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Resting Metabolism & Skeletal Muscle
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What is Skeletal Muscle?
Muscle is divided into two types, muscle in internal organs, such as the heart, and muscle
attached to bones that is used to move the body. Skeletal muscle can be increased
through exercise and other activity.
Resting metabolism reduces as we get older
Resting metabolism level peaks in the late teenage years and then gradually reduces over the
years. This leads to reductions in the body’s functions as we get older and in particular, it is one
of the main causes for muscle reduction as we get older.
Even when not being used to move parts of the body, muscles burn energy throughout the day
to generate heat for the body which is part of the resting metabolism. As the amount of muscle
decreases, so does the amount of energy burned. If people continue to eat the same amount of
food as when they are younger, then they develop an increasing abdominal circumference.
In order to avoid this, it is important to know your resting metabolism and maintain muscles
through exercise.
Skeletal Muscle Percentage (average value for all ages)
* According to Omron Healthcare figures.
Average Female Approximately 28%*
Average Male Approximately 37%*
HBF500-E.book Page 45 Friday, October 24, 2008 10:41 AM