TABLE 4.

Correlations at pre-EXP between pain-related variables and activation in the regions displaying a group difference.

	Right posterior insula		mPFC
	Whole group	Patients only	Whole group	Patients only
Pain-related fear (PHODA)	0.69∗∗	0.55∗	–0.43∗	–0.23
Fear of movement (TSK)	0.53∗∗	0.40	–0.39∗	–0.14
Pain catastrophizing (PCS)	0.51∗∗	0.27	–0.23	–0.03
Pain disability (PDI)	0.67∗∗	0.58∗	–0.38	–0.13
Pain intensity (VAS)	0.56∗∗	0.23	–0.48∗	–0.36
Walking performance	–0.71∗∗	–0.68∗	0.31	0.25
Staircase walking performance	0.73∗∗	0.71∗	–0.32	–0.20
Trait fear of pain (FPQ)	–0.33	0.14	0.33	0.39
Trait anxiety (STAI-Y2)	0.48∗	0.36	–0.34	–0.14

^∗∗p < 0.005 (Bonforroni correction for multiple comparison = 0.05/9 = 0.0055), ^∗p < 0.05, whole group = patients and controls together n = 28, patients only n = 14.