|
|
This is only a preview of the paper
Click here to register and get the full text.
Existing members click here to login
|
|
|
Critiquing A Scientific Paper Summary The objectives of this study were to access the body composition of adolescent girls in Australia with anorexia nervosa compared with that of control subjects and to investigate body composition and describe disease characteristics in the malnourished state. The relation between simple anthropometrical measures and the reference techniques for measuring body comparison like NAA (neuron activity analysis) and DXA (dual-energy X-ray absorptiometry) was also evaluated. The hypothesis was that the malnourished patients with anorexia nervosa have altered body composition characterized by depletion of fat and fat-free mass. The 23 patients with anorexia nervosa were aged 13-18 and were recruited between March 1999 and May 2000 from the Children’s Hospital at Westmead and at Westmead Hospital, both in Sydney, Australia. The control group consisted of 25 females of similar age. These subjects were selected from an existing DXA control group database at The Children’s Hospital at Westmead in whom the DXA measurements had already been performed before. Most of the Techniques that were used involved taking and measuring specific samples of body fat. A technique called dual-energy X-ray absorptiometry (DXA) was performed using a total body scanner that takes about 10 minutes and involves a low radiation dose to discover percentage body fat. Total body nitrogen (TBN) involves the patient being bilaterally irradiated with neutrons from the twin 252Cf sources. The scan involves a radiation dose and takes approximately 15 minutes during which time the patient lies motionless in supine position. NAA is neuron activity analysis; it measures and assesses body protein nutrition status directly.
Approximate Word count = 1005
Approximate Pages = 4
(250 words per page double spaced)
|
|
|
|
|
|