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TABLE 2

Univariate correlations between age, insulin sensitivity index, and selected variables

VariableAge
Insulin sensitivity
WomenMenWomenMen
Abdominal fat, total (cm20.41* 0.38* −0.62* −0.67* 
Abdominal fat, visceral (cm20.51* 0.41* −0.61* −0.58* 
Abdominal fat, subcutaneous (cm20.28 0.22 −0.56* −0.57* 
Waist circumference (cm) 0.42* 0.39* −0.59* −0.43* 
Total body fat (%) 0.44* 0.32* −0.43* −0.28 
Total body FFM (kg) −0.32* −0.35* −0.16 −0.21 
BMI (kg/m20.35* 0.25 −0.43* −0.55* 
Total cholesterol (mmol/l) 0.57* 0.36* −0.26 −0.36* 
Triglycerides (mg/dl) 0.47* 0.27 −0.36* −0.59* 
Insulin (pmol/l) 0.37* 0.02 −0.55* −0.60* 
Glucose (mmol/l) 0.49* 0.42* −0.25 −0.40* 
Nonesterified fatty acids (μmol/l) 0.28 0.38* 0.03 −0.30 
Vo2peak (ml · kg−1 FFM · min−1−0.84* −0.82* 0.44* 0.31* 
Citrate synthase (units/min) −0.37* 0.03 0.36* 0.51* 
Cytochrome c oxidase (units/min) −0.46* −0.36* 0.31 0.37* 
COX4 mRNA (arbitrary units) −0.32* −0.45* −0.03 0.23 
ND4 mRNA (arbitrary units) −0.45* −0.50* 0.18 0.20 
GLUT4 mRNA (arbitrary units) 0.29 0.04 0.07 0.29 
VariableAge
Insulin sensitivity
WomenMenWomenMen
Abdominal fat, total (cm20.41* 0.38* −0.62* −0.67* 
Abdominal fat, visceral (cm20.51* 0.41* −0.61* −0.58* 
Abdominal fat, subcutaneous (cm20.28 0.22 −0.56* −0.57* 
Waist circumference (cm) 0.42* 0.39* −0.59* −0.43* 
Total body fat (%) 0.44* 0.32* −0.43* −0.28 
Total body FFM (kg) −0.32* −0.35* −0.16 −0.21 
BMI (kg/m20.35* 0.25 −0.43* −0.55* 
Total cholesterol (mmol/l) 0.57* 0.36* −0.26 −0.36* 
Triglycerides (mg/dl) 0.47* 0.27 −0.36* −0.59* 
Insulin (pmol/l) 0.37* 0.02 −0.55* −0.60* 
Glucose (mmol/l) 0.49* 0.42* −0.25 −0.40* 
Nonesterified fatty acids (μmol/l) 0.28 0.38* 0.03 −0.30 
Vo2peak (ml · kg−1 FFM · min−1−0.84* −0.82* 0.44* 0.31* 
Citrate synthase (units/min) −0.37* 0.03 0.36* 0.51* 
Cytochrome c oxidase (units/min) −0.46* −0.36* 0.31 0.37* 
COX4 mRNA (arbitrary units) −0.32* −0.45* −0.03 0.23 
ND4 mRNA (arbitrary units) −0.45* −0.50* 0.18 0.20 
GLUT4 mRNA (arbitrary units) 0.29 0.04 0.07 0.29 
*

P < 0.025.

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