Table 2. Correlation coefficients of joint angle and joint moment with iliopsoas muscle thickness.

	NP	AP	PP
ΔJA of pelvic tilt	0.21	0.12	−0.27
ΔJA of hip joint (°)	0.57	0.82*	−0.25
Hip joint moment	0.18	−0.3	−0.65
Knee joint moment	−0.15	−0.07	0.77*

NP: neutral position; AP: anterior tilt position; PP: posterior tilt position; ΔJA: the angle difference between the resting standing and squatting positions; ΔIT: the iliopsoas thickness difference between the standing and squatting positions.

*Significant correlation (p<0.05).