Table 2. Linear Regression Models.

Model 1. a Depedent variable: weight b Z-score, R2=0.59	β-Standarized	P Value
Adipocyte volume c	0.50	< 0.001
SREBP-1c expression c, d	0.57	< 0.001
Activity index	0.29	0.006
SCD-1 expression c , d	-0.30	0.02
Model 2. a Dependent variable: adipocyte volume c R2=0.59
Normalized weight d	0.43	< 0.001
SCD-1 activity	0.27	0.009
Adiponectin expression c, d	-0.43	< 0.001
CB1 receptor expression c, d	0.37	0.001
PPARg expression c, d	-0.33	0.003

^aVariables related to the weight Z-score (model 1) and to adipocyte volume (model 2). Method: stepwise. Variables included in each analysis: Model 1: adipocyte volume, preadipocyte number, SREBP-1c expression, PPARg expression, CB1 receptor expression, Adiponectin expression, SCD-1 expression, INS receptor expression, IRS1 expression, osteocalcin expression, activity index. Model 2: weight Z-score, preadipocyte number, SREBP-1c expression, PPARg expression, CB1 receptor expression, Adiponectin expression, SCD-1 expression, INS receptor expression, IRS1 expression, osteocalcin expression, activity index.

^bWeight normalized for gender and age

^cThese variables were transformed using logarithms

^dThe gene expressions are relativized to the expression of β-actin