Research on Knee Joint Load and Influencing Factors of Typical Tai Chi Movements

Table 2

Correlation analysis of knee joint range of motion (ROM) and center of mass (COM) displacement on knee joint load.

Continuous variable	Vertical GRF		Flexion moment		Extension moment		Abduction moment		Adduction moment		Int. rotation moment		Ext. rotation moment
	Maximum knee flexion angle	0.10	n.s.	-0.24	0.012	0.31	0.001	0.13	n.s.	-0.43	<0.001	0.31	0.001	-0.30	0.001
Flexion and extension ROM	0.07	n.s.	-0.25	0.007	0.39	<0.001	0.29	0.002	-0.47	<0.001	0.27	0.004	-0.39	<0.001
Abduction and adduction ROM	0.13	n.s.	-0.01	n.s.	0.08	n.s.	0.10	n.s.	-0.08	n.s.	0.04	n.s.	-0.10	n.s.
Int. and ext. rotation ROM	0.20	0.035	-0.27	0.004	0.09	n.s.	0.35	<0.001	-0.28	0.003	0.26	0.007	-0.34	<0.001
COM: (mm)	0.33	<0.001	-0.32	0.001	0.55	<0.001	0.79	<0.001	-0.23	0.016	-0.13	n.s.	-0.71	<0.001
COM: (mm)	0.50	<0.001	-0.06	n.s.	-0.61	<0.001	-0.24	0.011	0.08	n.s.	0.37	<0.001	0.33	<0.001
COM: (mm)	-0.13	n.s.	-0.26	0.006	0.30	0.001	0.17	n.s.	-0.41	<0.001	0.31	0.001	-0.29	0.002

Int.: internal; Ext.: external. Bold values indicate significant differences, . n.s. indicates nonsignificant differences.