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Why is Muscle Mass Important? Can it be measured and tracked?
Involuntary loss of more than 5% total body weight and loss of Lean Body
Mass (LBM) may indicate HIV related wasting. Studies show that death
typically occurs when body weight falls one-third of ideal weight, or when LBM
decreases by 50 percent.
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There are ways to measure muscle to fat ratios, such as the Bioelectric
Impedance Analysis
(BIA) test. The
BIA test is a simple,
non invasive, painless procedure. By using a very small amount of electric
current, this test can not only show the ratio of lean
muscle to fat, but also other important indicators such as the amount of intra-cellular and extra cellular-water.
Your total body weight is not just what is important, it is what makes up that
total body weight, and how it changes over time. To see a sample of a
detailed BIA report using RJL Systems Cyprus 2.7, we have one in
Adobe PDF Format.
To see a short instructional video on
BIA testing procedures and what to
expect, here are some short video clips.
The BIA Test |
Windows Media Player |
QuickTime Player |
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For more detailed scientific information about BIA, see the RJL Systems web site at:
http://www.rjlsystems.com/
For more information about HIV wasting and treatment , see
recognizing-hiv-associated-wasting
Some
Research
1 Kotler
DP, Tierney AR, Wang J, Pierson PN Jr. Magnitude of body-cell-mass
depletion and the timing of death from wasting in AIDS1-3 Am
J Clin Nutr 1989;50:444-7
2 Ott M, Fischer H, Polat H, et al. Bioelectrical Impedance
Analysis as a Predictor of Survival in Patients with Human
Immunodeficiency Virus Infection. J Acqui Immune Defic Syndr Hum
Retrovirol 1995;9:20-5
3 Wheeler DA, Gibert CL, Launer CA, et al. Weight Loss as a
Predictor of Survival and Disease Progression in HIV Infection. J Acqui
Immune Defic Syndr Hum Retrovirol 1998;18:80-5
4
HIV-associated wasting in the era of HAART: a practice-based approach
to diagnosis and treatment. The AIDS reader. 2001 Nov;11(11):557-60,
566-9.
5 Tang AM et al. Weight loss and survival in
HIV-positive patients in the era of highly active antiretroviral
therapy. JAIDS 31 (2):230-236, 2002
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