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Andreacci, Joseph L

Dixon, Curt B

Masteller, B.

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Does Eating a Meal before Testing Alter the Percent Body Fat Measurement Determined by Bioelectrical Impedance Analysis?    1,2Masteller, B., 2Dixon, C., FACSM., 1Andreacci, J., FACSM. 1Bloomsburg University, Bloomsburg,     PA, 2Lock Haven University, Lock Haven, PA  brittanymasteller@gmail.com, cdixon@lhup.edu, jandreac@bloomu.edu  When using the bioelectrical impedance analysis (BIA) to assess body composition, it is recommended that clients avoid eating or drinking four hours prior to the test.  PURPOSE:  To examine the effect of meal consumption on measures of percent body fat (%BF) using BIA. METHODS:  Forty-four young adults (25 women; 19 men) volunteered to participate in this study (age = 20.5 ± 1.1 years; body mass index = 24.1 ± 3.8 kg/m2).  Subjects had their body composition assessed using four different BIA analyzers: leg-to-leg (LBIA), hand-to-hand (HBIA), segmental (SBIA), and multi-frequency (MBIA), on two separate occasions. After an initial baseline %BF measurement, subjects consumed a self-selected meal (919 ± 215 kcals) or received nothing, which served as the control (CON). Subjects were reassessed 20, 40 and 60 min following (POST) the baseline measure in each treatment condition. RESULTS:  Twenty minutes after eating, body mass (All analyzers = 0.7 kg, p < 0.01) and %BF (LBIA = 0.9%, HBIA = 0.9%, SBIA = 1.7%, MBIA = 0.8%, p < 0.001) significantly increased above baseline and remained elevated at 60 min POST.  During the CON trial, %BF was unchanged (p > 0.05) at 20 min for each of the BIA analyzers except MBIA (0.5%, p < 0.001).  CONCLUSION: Eating a meal prior to the assessment resulted in a significant increase in the %BF estimate for all four of the BIA analyzers. However, the magnitude of change was relatively small (range = 0.8% - 1.7%), and therefore, may have little practical significance when using BIA to assess a client’s %BF in a health and fitness setting.      Funded by Lock Haven University Faculty Professional Development Grant  

Does Eating a Meal before Testing Alter the Percent Body Fat Measurement Determined by Bioelectrical Impedance Analysis?

http://digitalcommons.wku.edu/cgi/viewcontent.cgi?article=1719&context=ijesab

Does Eating a Meal before Testing Alter the Percent Body Fat Measurement Determined by Bioelectrical Impedance Analysis?

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