TABLE 3.

Multiple linear regression of leg fat (kg) on skeletal muscle insulin sensitivity by race

	R 2	β	SE	P value for β
Model I: African Americans (n = 55)	23%
Sex		−0.23	0.62	0.71
Age, y		0.11	0.02	0.59
Total lean mass, kg		−0.05	0.03	0.04
Leg fat, kg		−0.05	0.04	0.23
Model II: Caucasian Americans (n = 57)	34%
Sex1		3.3	0.93	0.01
Age, y		0.05	0.03	0.19
Total lean mass, kg		0.08	0.05	0.10
Leg fat, kg		−0.39	0.08	<0.001

Significant race × leg fat interaction (P = 0.009, R² = 42%) in overall model. Boldface type indicates predictors with significant P values in race-specific models.

¹Males coded as 0, females coded as 1.