Table 4.

Spearman Correlation Between Measured and Predicted Skeletal Muscle GU Values and P Values for Comparisons of Correlation Coefficients Between Different Indices

	Spearman Correlation			P Value	P Value
	Muscle-ISI	HOMA-IR	revQUICKI	Muscle-ISI vs HOMA-IR	Muscle-ISI vs revQUICKI
Training	0.80 **	-0.56 *	0.61 **	<0.001	0.003
Test	0.67 **	-0.58 **	0.59 **	0.280	0.357

Abbreviations: HOMA-IR, homeostatic model assessment—insulin resistance; Muscle-ISI, muscle insulin sensitivity; revQUICKI, revised quantitative insulin sensitivity check index.

**P < 0.001; *P < 0.01.