From Fellrnr.com, Running tips
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11:15, 10 June 2013
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==Underwater Weighing==
This used to be the 'gold standard' of body fat measurement. The technique involves being weighed on dry ground and then again underwater having breathed out as much as possible. This gives a value of density, so it should have similar accuracy as the BOD POD, but is more expensive and unpleasant. I have not tried this technique.
==DEXA==
Different tissues in the body absorb different frequencies of X-Rays at different levels. This technique (Deal-Energy X-Ray Absorpiometry) uses two frequencies of X-Rays and looks at the different absorption to work out body fat. This is the current 'gold standard' and I believe it will show the distribution of body fat as well as the level. I have not found anywhere locally that provides Main article: [[DEXA. ]]''
[[File:DEXA femaleDifferent tissues in the body absorb different frequencies of X-Rays at different levels.jpg|none|thumb|400px|DEXA imageThis technique (Deal-Energy X-Ray Absorpiometry) uses two frequencies of X-Rays and looks at the different absorption to work out body fat.]]This is the current 'gold standard' for clinical body fat measurement and provides a detailed breakdown of body fat and lean tissue in different areas of the body.
[[File:DEXA page 1.jpg|none|thumb|x300px|This is the first page of a DEXA report that gives an overview of body fat composition.]]
==Underwater Weighing==
This used to be the 'gold standard' of body fat measurement. The technique involves being weighed on dry ground and then again underwater having breathed out as much as possible. This gives a value of density, so it should have similar accuracy as the BOD POD, but is more expensive and unpleasant. I have not tried this technique.
==Alternatives to Measurement==
These approaches can give some hint about your body fat, but are no substitute for a real measurement.
