Table 1. Descriptive data associated with subjects in each group.

Variables	Without LBP		With SI dysfunction		Without SI dysfunction		P values (MNOVA)
	n = 53		n = 53		n = 53
	Mean	SD	Mean	SD	Mean	SD
Age	45.74	14.45	42.75	12.6	39.15	14.43	0.053
Weight (kg)	66.58	7.16	70.45	10.12	69.49	12.78	0.66
Height (m)	1.66	0.09	1.65	0.09	1.67	0.08	0.26
BMI	24.9	3.6	26.2	4.95	24.6	3.96	0.14
Knee extension (°) (hamstring length)	153.96	8.6	160.7	11.2	156.04	13.8	0.008*
Gluteus maximus strength (kPa)	29.70	7.2	22.11	7.5	25.47	7.0	0.000†

^*Post hoc analysis: no LBP versus LBP without SI dysfunction: P = 0.61; no LBP versus LBP with SI dysfunction: P = 0.007; LBP with SI dysfunction versus LBP without SI dysfunction: P = 0.08.

^†Post hoc analysis no LBP versus LBP without SI dysfunction: P = 0.009; no LBP versus LBP with SI dysfunction: P = 0.000; LBP with SI dysfunction versus LBP without SI dysfunction: P = 0.04.