Table 2.

The associations between lower levels of physical activity and paraspinal muscle properties

Risk of high fat content
	Univariate	P	Multivariate	P
	OR (95% CI)		OR (95% CI) 1
Multifidus	2.8 (1.3, 6.3)	0.01	2.7 (1.1, 6.7)	0.04
Erector spinae	2.7 (1.0, 7.1)	0.04	2.2 (0.7, 6.9)	0.16
Cross-sectional area (cm 2 )
	Univariate	P	Multivariate	P
	β (95% CI)		β (95% CI) 2
Multifidus	0.15 (−0.43, 0.73)	0.61	0.09 (−0.48, 0.66)	0.76
Erector spinae	−1.01 (−2.53, 0.50)	0.19	−0.58 (−2.07, 0.91)	0.44

¹Risk of fat infiltration adjusted for age, gender, and BMI; ²cross-sectional area adjusted for age, gender, BMI and fat content. OR, odds ratio; CI, confidence interval; BMI, body mass index.