Comparison of the Bod Pod and dual energy x-ray absorptiometry in men
Stephen D Ball et al 2004 Physiol. Meas. 25 671-678 doi:10.1088/0967-3334/25/3/007
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Stephen D Ball1 and Thomas S Altena2
1 Exercise Physiology Laboratory, Department of Nutritional Sciences, University of Missouri, Columbia, MO, USA
2 Department of Health, Physical Education and Recreation, Southwest Missouri State University, Springfield, MO, USA
E-mail:
[email protected]
Abstract. The majority of studies investigating the accuracy of the Bod Pod have compared it to hydrostatic weighing (HW), the long held, and perhaps outdated 'gold standard' method of body composition analysis. Much less research has compared the Bod Pod to dual energy x-ray absorptiometry (DXA), a technique that is becoming popular as an alternative reference method.
The purpose of this study was to compare per cent fat estimates by the Bod Pod to those of DXA in a large number of men. Participants were 160 men (32 ± 11 years).
Per cent body fat was estimated to be 19.4 ± 6.8 and 21.6 ± 8.4 for DXA and the Bod Pod, respectively. Although the two methods were highly correlated (0.94), the mean difference of 2.2% was significant (p < 0.01).
The amount of difference increased as body fatness increased (p < 0.0001). The results of this study indicate that a difference between methods existed for our sample of men. It is uncertain exactly where the difference lies.
Practitioners should be aware that even with the use of technologically sophisticated methods (i.e., Bod Pod, DXA), differences between methods exist and the determination of body composition is at best, an estimation.Keywords: body composition, air displacement plethysmography, hydrostatic weighing, body fat
Print publication: Issue 3 (June 2004)
As long as you see your bodyfat going down, and use the same method, first thing in the morning etc, in a lot of ways it doesn't really matter what you use.
Personally, I prefer those cheap accumeasure white plastic calipers, one site measurement. They are easy to use, you can do it yourself............
I also have a BMI scale (Tanita IMHO makes the best ones). Again, not that accurate, but if the readings go down over the weeks.......I use it moreso to track my lower body fat, cause I don't think it really does an overall reading all that well. I also programmed it slightly differently, as these scales do not have programs suited for bodybuilders really.