In air displacement plethysmography the volume of an object is measured indirectly by measuring the volume of air it displaces inside an enclosed chamber plethysmograph. Air displacement plethysmography adp is becoming a popular method to assess body composition.
Percentage Body Fat Bf Measured By Using Air Displacement
Body composition measurements by air displacement plethysmography. We hypothesized that physiologic changes owing to pregnancy could affect the accuracy of predicted tgv and introduce errors into body composition measurements. The method is similar underwater hydrostatic weighing but uses air instead of water. 1 hydrostatic weighing hw which also measures body density. Whole body air displacement plethysmography is a method for assessing body fat and lean mass commonly using the bodpod machine. Thirty seven males 230 32 yr 1773 54 cm 748 75 kg and thirty. Methods fat body volume and density by the bod pod before bod pod bh and immediately following hydrostatic weighing bod pod fh were performed in 32 healthy females age yr 33 11 weight kg 64 14 height cm 167 7.
Air displacement plethysmography adp is an age appropriate method for measuring relative fat mass fm in children. A bod pod assesses body composition via. Using air displacement technology for measuring and tracking body fat and lean mass. Body composition measurements with air displacement plethysmography adp define body volume which must be corrected for thoracic gas volume tgv. This study compared air displacement plethysmography adp which relies on measurements of body density to estimate body fat with three other techniques that measure body composition. Air displacement plethysmography adp also known as whole body air displacement plethysmography is a recognized and scientifically validated densitometric method to measure human body compositionadp is based on the same principles as the gold standard method of hydrostatic weighing but through a densitometric technique that uses air displacement rather than water immersion.
2 bioelectrical impedance bia which determines electrical resistance and total. To investigate the effect of body temperature and moisture on body fat fat volume and density by air displacement plethysmography bod pod. Thus human body volume is measured when a subject sits inside the chamber and displaces a volume of air equal to his or her body volume. However the accuracy of this method has not been evaluated in children aged 5. Several studies have shown certain types of clothing can affect measurements of body density however no study has specifically investigated the effect of cotton gym shorts and spandex bicycle shorts on body density. To compare body composition parameters estimated by air displacement plethysmography adp to dual x ray absorptiometry dxa in body mass index bmi classifications that include extremely obese bmi400kgm2 and to examine if differences between analyses were influenced by bmi.
The most widely applied field technique for assessing body composition is. Air plethysmography total body volume air displacement all of these. Is a measure of body density.
Gallery of Body Composition Measurements By Air Displacement Plethysmography
