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What are two benefits and two limitations for the three methods of body composition analysis, Dual-energy...

What are two benefits and two limitations for the three methods of body composition analysis, Dual-energy X-ray Absorptiometry (DXA), Bioelectric Impedance Analysis (BIA) and Skinfolds?

Science   Anatomy-And-Physiology   
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Answer #1

1) Dual-energy X-ray Absorptiometry (DXA)

Benefits

  1. Easy to use
  2. Very low X -ray radiation exposure.

Limitations

  1. Expensive equipment
  2. Not portable
  3. Trained technician required

2) Bioelectric Impedance Analysis (BIA)

Benefits

  1. Very simple
  2. Quick to perform

Limitations

  1. Not so accurate as other method.Changes in skin , temperature will affect the conduction.
  2. Population and equipment specific.
  3. Tend to overestimate body fat in very lean , muscular people .

3) Skinfolds

Benefits

  1. Inexpensive
  2. Information on body fat distribution.

Limitations

  1. Prediction of body fat is dependent on specific equation's assumption.
  2. Difficult to make measure of very obese individual.
  3. Discomfort or pain during measuring.
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