Explain the principle of the DXA technique, and provide its standard error of estimate (SEE).

What will be an ideal response?


Dual energy x-ray absorptiometry (DXA) is a method to assess body composition that uses very low-dose beams of x-ray energy to measure total body fat mass, the fat distribution pattern, and bone density (for osteoporosis risk assessment). It is a simple procedure that takes less than 15 minutes and is most frequently used in research and by medical facilities. The SEE for this technique is ±1.8 percent.

Health & Biomechanics

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What is the primary difference between a large motor unit and a small motor unit?

A. A large motor unit would only be found in large muscles. B. The number of muscle fibers innervated by a single motor nerve. C. A small motor unit will only be found in slow twitch muscles. D. The number of slow twitch muscles vs. fast twitch muscles.

Health & Biomechanics

____________________ ____________________ defines the bodily changes at the cellular level associated with the medication

Fill in the blank(s) with correct word

Health & Biomechanics

The scapula moves on the rib cage as a consequence of joint motion actually occurring at the acromioclavicular joint and to a lesser extent at the sternoclavicular joint.

Answer the following statement true (T) or false (F)

Health & Biomechanics

Athletes who train too much are said to suffer from overload syndrome

Indicate whether the statement is true or false.

Health & Biomechanics