No differences in the body fat after violating core bioelectrical impedance measurement assumptions

BMC Public Health

Table 2 Change in %FM with changes in impedance and body mass after violating the preliminary measurement BIA assumptions

Baseline	BIA	Total Body Impedance			Body Mass (BM)
		Partial R	Parameter Estimate (%FM/Ω)	Standardized Estimate (%FM/SD)	Partial R	Parameter Estimate (%FM/kg)	Standardized Estimate (%FM/SD)
Control trial	BC-418	0.83	1.03	8.48%	0.70	0.68	5.59%
Control trial	TBF-314	0.59	0.69	5.13%	0.57	0.66	4.89%
Trial	BIA	Change in %FM with Impedance			Change in %FM with BM
		Partial R	Parameter Estimate (%FM/Ω)	Standardized Estimate (%FM/SD)	Partial R	Parameter Estimate (%FM/kg)	Standardized Estimate (%FM/SD)
Water intake	BC-418	0.82	0.75	0.79	0.85	0.23	0.24
Water intake	TBF-314	0.81	0.53	0.34	0.85	0.62	0.40
Voided Bladder	BC-418	0.95	0.75	0.52	0.85	0.38	0.27
Voided Bladder	TBF-314	0.75	0.54	0.16	0.83	0.72	0.22
Exercise	BC-418	0.85	0.80	0.55	0.55	0.32	0.22
Exercise	TBF-314	0.80	0.72	0.34	0.69	0.50	0.24
Dehydration	BC-418	0.92	0.90	1.31	0.81	0.54	0.79
Dehydration	TBF-314	0.93	0.90	1.18	0.84	0.54	0.71
Food intake	BC-418	0.94	0.94	1.32	0.73	0.35	0.49
Food intake	TBF-314	0.92	0.94	1.13	0.66	0.35	0.42

Standardized estimates are expressed as %change in fat mass per one standard deviation change in impedance or body mass. The values of impedance and body weight for each condition were shown as the intra-individual difference between the control and the condition trial

ISSN: 1471-2458