Table 1. Weights and intestinal content of lean and overweight Wistar rats.

	units	female control	male control	female cafeteria	male cafeteria	P values
						sex	diet
rat weight in vivo (initial)	g	167 ±3	238 ±1	168 ±2	238 ±5	<0.0001	NS
rat weight in vivo (final)	g	220 ±4	348 ±5	257 ±9	369 ±11	<0.0001	0.0014
body weight increase	g	54 ±3	110 ±6	89 ±8	131 ±7	<0.0001	0.0002
gastrointestinal content	g	17.3 ±0.6	23.0 ±0.8	20.6 ±1.2	21.1 ±1.1	0.0041	NS
rat net weight	g	203 ±4	325 ±4	236 ±8	347 ±11	<0.0001	0.0013
sum of all organs+carcass	g	196 ±4	311 ±4	226 ±8	334 ±11	<0.0001	0.0018
weight unaccounted forA	g	8.1 ±0.7	13.9 ±1.1	8.9 ±2.8	13.1 ±1.6	0.0094	NS
	% of BW	4.13 ±0.2	4.38 ±0.31	3.82 ±0.41	3.87 ±0.19	NS	NS

Values are the mean ± sem of six different animals. Statistical significance of the differences between groups (two-way ANOVA); the only significant interaction between sex and diet was observed in the gastrointestinal content; NS = not statistically significant (P>0.05). BW = body weight (final rat net weight).

^APart of the blood and other fluids.