Table 1. Data in biofeedback pressure and pelvic angle according to PSLR angle before and after hamstring stretching

PSLR Angle	Pressure of PBU				Pelvic angle
	Pre-stretch	Post-stretch	p	Effect size	Pre-stretch	Post-stretch	p	Effect size
10°	41.05±1.88	40.40±2.01	0.012	0.63	0.01±0.86	–0.02±1.01	0.935	0.02
20°	43.40±2.80	42.40±2.54	0.007	0.67	0.63±1.32	0.49±1.22	0.527	0.14
30°	48.75±6.26	45.70±4.74	0.018	0.58	1.68±1.81	1.38±1.66	0.461	0.17
40°	55.25±8.35	52.20±7.59	0.010	0.64	3.44±2.35	2.85±2.04	0.072	0.43
50°	64.30±12.22	12.22±10.76	0.005	0.71	4.99±3.05	4.16±2.48	0.037	0.50
60°	73.30±13.66	69.35±13.26	0.041	0.49	7.21±3.50	5.98±2.93	0.005	0.71
70°	83.44±13.29	80.75±10.21	0.147	0.38	9.39±4.29	7.39±2.78	0.050	0.53

Data are presented as means±standard deviation.
Asterisks indicate significant differences determined by paired t-tests.
PSLR - passive straight leg raising; PBU - pressure biofeedback unit.