TABLE 2.

Multifidus Measures at L5 as Predictors of Lower Limb Injury^a

Measure	Preseason			Season
	χ2	Odds Ratio	95% CI	χ2	Odds Ratio	95% CI
CSA, cm2
Average	4.67 b	1.25	1.14-1.52	9.42 b	1.43	1.14-1.82
Asymmetry	0.46	0.83	0.48-1.43	0.03	1.06	0.58-1.92
Smaller sidec	1.74	1.23	0.90-1.68	0.45	1.11	0.82-1.51
Thickness, mm
Average	0.01	1.00	0.92-1.08	0.47	1.03	0.95-1.11
Asymmetry	0.03	0.99	0.85-1.15	1.01	0.92	0.78-1.08
Smaller sidec	4.00 b	1.38	1.01-1.90	0.37	1.10	0.81-1.50
Thickness Δ, mm
Average	0.26	1.05	0.88-1.24	0.46	1.07	0.89-1.28
Asymmetry	0.43	1.10	0.83-1.46	0.74	1.14	0.84-1.55
Smaller sidec	0.02	0.98	0.72-1.33	1.70	0.82	0.60-1.11

^aAdjusted for club differences. Asymmetry, absolute difference across vertebral side; average, averaged across vertebral side; CSA, cross-sectional area; thickness Δ, change in thickness due to contraction.

^bStatistically significant (P < .05).

^cMultifidus smaller on the side of the kicking leg.