Rachael and My How it Works on Air Displacement Plethysmography… Enjoy!!
Recommended further reading:
http://ajcn.nutrition.org/content/75/3/453.full#cited-by : BOD POD Evaluation
https://www.fda.gov/ohrms/dockets/dockets/05p0207/05p-0207-ccp0001-04-manual.pdf : FDA BOD POD Manual
http://ajcn.nutrition.org/content/95/1/25.long : Dual Energy X-Ray
http://ajcn.nutrition.org/content/69/5/898.long : Comparison of ADP, Hydrostatic weighing and electrical impedance