High baseline fat mass, but not lean tissue mass, is associated with high intensity low back pain and disability in community-based adults

Table 3 The relationship between body composition and any high disability back pain during the study, after adjustment for confounders

	Multivariable odds ratio^a	95% CI	p value
BMI^b	1.12	1.04–1.20	0.002
Fat mass
Total	1.06	1.01–1.11	0.02
Trunk	1.11	1.01–1.21	0.02
Upper limb	1.53	1.07–2.19	0.02
Lower limb	1.12	1.00–1.25	0.05
Android	1.65	1.07–2.56	0.03
Gynoid	1.40	1.07–1.84	0.02
Android to gynoid ratio (%)^c	1.03	0.99–1.07	0.11
Lean tissue mass
Total	0.98	0.89–1.08	0.73
Upper limb	1.13	0.55–2.30	0.74
Lower limb	1.01	0.78–1.32	0.93
Fat to lean mass ratios^c
Total body fat to lean mass ratio (per 10 kg)	1.33	1.08–1.64	0.007
Upper limb fat to lean mass ratio (per 10 kg)	1.28	1.06–1.54	0.009
Lower limb fat to lean mass ratio (per 10 kg)	1.23	1.04–1.45	0.01

^aRelationship between body composition and any high disability back pain (at any time point), adjusted for age, gender, strenuous physical activity, and respective fat or lean tissue mass measure in addition to mental health component score (from SF-36). When performing multivariable analyses for fat mass (total, trunk, android, and gynoid), total lean tissue mass was included as a potential confounder. When performing multivariable analyses for upper and lower limb fat mass, lean tissue mass in the upper and lower limb respectively was included as a potential confounder
^bBMI adjusted for age, gender, strenuous physical activity, and mental health component score (from SF-36)
^cAll ratios were adjusted for age, gender, strenuous physical activity, and mental health component score (from SF-36)

ISSN: 1478-6362