Table 4.

Correlation coefficients and P values^a between biomechanical and independent variables during flexion-extension, lateral bending,^b and axial rotation^b for men and women.

Variable	Sex	ROM FL−EX		ROM LB		ROM AR		LZ FL−EX		LZ LB		LZ AR		SZ FL−EX		SZ LB		SZ AR
		r	P	r	P	r	P	r	P	r	P	r	P	r	P	r	P	r	P
Level	M	0.51	<.001	−0.017	.848	0.078	.366	0.478	<.001	−0.039	.657	0.133	.124	0.285	<.001	−0.15	.082	0.072	.408
	F	0.43	<.001	0.014	.885	0.276	.003	0.442	<.001	0.029	.755	0.305	<.001	0.123	.187	−0.219	.018	0.249	.007
Age	M	0.044	.612	−0.173	.045	0.168	.051	0.16	.063	0.057	.513	0.147	.090	−0.414	<.001	−0.348	<.001	−0.068	.434
	F	0.02	.833	−0.088	.345	0.276	.003	0.182	.050	0.054	.568	0.284	.002	−0.488	<.001	−0.428	<.001	0.062	.505
Weight	M	−0.256	.003	−0.283	<.001	−0.196	.023	−0.247	.004	−0.307	<.001	−0.127	.143	−0.076	.380	−0.235	.006	−0.228	.008
	F	−0.152	.120	−0.172	.079	−0.104	.291	−0.088	.373	−0.004	.968	−0.121	.218	−0.219	.025	−0.128	.192	−0.151	.124
Height	M	0.007	.932	0.001	.993	−0.084	.333	0.008	.931	−0.063	.468	−0.071	.415	0.012	.888	−0.087	.317	−0.009	.919
	F	−0.07	.479	−0.123	.213	−0.192	.049	−0.041	.678	−0.182	.064	−0.204	.037	−0.074	.455	−0.084	.395	−0.212	.030
BMI	M	−0.272	.001	−0.289	<.001	−0.186	.031	−0.267	.002	−0.301	<.001	−0.121	.163	0.163	.399	−0.202	.019	−0.234	.006
	F	−0.121	.225	−0.144	.149	−0.041	.682	−0.063	.527	0.033	.739	−0.054	.589	−0.189	.057	−0.136	.173	−0.093	.354
BMD	M	−0.311	<.001	−0.182	.035	−0.127	.143	−0.296	<.001	−0.15	.082	−0.126	.145	−0.128	.140	−0.142	.100	−0.225	.009
	F	−0.269	.005	−0.15	.120	−0.093	.337	−0.249	.009	−0.167	.085	−0.079	.414	−0.135	.163	0.014	.890	−0.148	.127
VB Ht	M	−0.028	.767	0.01	.916	−0.02	.838	−0.039	.680	0.003	.977	0.016	.866	0.001	.995	−0.006	.950	0.031	.744
	F	0.108	.329	0.173	.117	0.089	.423	0.107	.337	0.23	.037	0.116	.294	0.023	.836	0.035	.751	0.045	.688
Disc Ht	M	−0.178	.087	0.127	.222	−0.244	.018	−0.266	.009	0.072	.489	−0.23	.026	0.206	.046	0.358	<.001	−0.125	.228
	F	0.103	.407	0.283	.020	0.12	.333	0.133	.285	0.117	.346	0.119	.336	−0.165	.181	0.125	.313	0.237	.054
Disc VB Ht	M	−0.179	.084	0.073	.486	−0.258	.012	−0.26	.012	0.022	.835	−0.261	.011	0.19	.066	0.318	.002	−0.162	.119
	F	0.07	.577	0.201	.103	0.103	.408	0.093	.453	0.032	.796	0.091)	.463	−0.155	.211	0.097	.434	0.215	.080

Abbreviations: AR, axial rotation; BMD, bone mineral density; BMI, body mass index; F, female; FL-EX, flexion-extension; Ht; height; LB, lateral bending; LZ, lax zone; M, male; ROM, range of motion; SZ, stiff zone; VB, vertebral body.

^aSignificant correlations (P < .05) are shown in bold.

^bAverage of right and left.