Table 3

Correlations between joint mobility scores (Beighton and Belavy-Owen-Mitchell (BOM)) and muscle length/thickness (by condition) and trunk muscle strength/endurance

Variable	Correlation for variable:
	Beighton score		BOM score
	Rest	Contraction	Rest	Contraction
Transversus abdominis length, cm
AvLx	0.060	0.096	0.078	0.172†
L1	0.070	0.118	0.085	0.185
L3	0.089	0.162	0.147	0.272†
L5	0.051	0.056	0.037	0.138
Transversus abdominis thickness, cm
AvLx	−0.048	−0.090	−0.095	−0.145*
L1	−0.080	−0.164	−0.149	−0.191
L3	0.026	−0.024	−0.017	−0.089
L5	−0.061	−0.079	−0.114	−0.156
External abdominal oblique thickness, cm
AvLx	0.243‡	0.187†	0.208‡	0.154†
L1	0.171	0.123	0.125	0.114
L3	0.296†	0.202*	0.295†	0.172
L5	0.253*	0.240*	0.209*	0.193
Internal abdominal oblique thickness, cm
AvLx	0.234‡	0.153†	0.242‡	0.121*
L1	0.345‡	0.251*	0.314†	0.233*
L3	0.251*	0.204*	0.279†	0.172
L5	0.149	0.076	0.193	0.055
Trunk muscle strength, kg
Extension	0.131†		0.114†
Flexion	0.347‡		0.356‡
Trunk muscle endurance, sec
Extension	0.045		−0.015
Flexion	0.382‡		0.328‡

Data are Spearman rho. AvLx: Average of L1–L5. *p<0.05, † p<0.01, ‡p<0.001.