Table 3.

Correlations coefficients (r) between combined (left and right side) CSA measurement and strength test

	Leg Extension		Trunk Flexion		Trunk Extension
	r	P	r	P	r	P
PS 3–4	0.60**	<.01	0.50**	<.01	0.50**	<.01
PS 4–5	0.23	.26	0.44*	.03	0.43*	.03
Pso 3–4	0.60**	<.01	0.38	.06	0.36	.07
Pso 4–5	0.54**	<.01	0.48*	.01	0.45*	.02

PS Paraspinal Muscles, Pso Psoas Muscles, CC Correlation Coefficient (Spearman); *p < 0.05; **p < 0.01