Table 4.

Correlations coefficients (r) between side to side CSA measurement and strength test results

	Leg Extension		Trunk Flexion		Trunk Extension
	r	P	r	P	r	P
PS 3–4 (R)	0.59**	< 0.01	0.47*	0.02	0.52**	0.01
PS 3–4 (L)	0.60**	< 0.01	0.53**	0.01	0.46*	0.02
PS 4–5 (R)	0.29	0.15	0.36	0.08	0.42*	0.03
PS 4–5 (L)	0.15	0.47	0.47*	0.02	0.40*	0.04
Pso 3–4 (R)	0.68**	< 0.01	0.39*	0.04	0.39	0.05
Pso 3–4 (L)	0.51**	0.01	0.35	0.08	032	0.11
Pso 4–5 (R)	0.60**	< 0.01	0.48*	0.01	0.48*	0.01
Pso 4–5 (L)	0.47*	0.02	0.47*	0.02	0.40*	0.04

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