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

Table 2 The relationship between body composition and any high intensity low back pain during the study, after adjustment for confounders

	Multivariable odds ratio^a	95% CI	p value
BMI^b	1.10	1.05–1.17	< 0.001
Fat mass
Total	1.05	1.01–1.09	0.01
Trunk	1.11	1.04–1.20	0.003
Upper limb	1.44	1.07–1.93	0.02
Lower limb	1.09	1.00–1.19	0.05
Android	1.60	1.13–2.26	0.008
Gynoid	1.30	1.04–1.61	0.02
Android to gynoid ratio (%)^c	1.04	1.01–1.08	0.009
Lean tissue mass
Total	1.00	0.93–1.08	0.92
Upper limb	1.59	0.92–2.74	0.10
Lower limb	1.05	0.85–1.28	0.67
Fat to lean mass ratios^c
Total body fat to lean mass ratio (per 10 kg)	1.33	1.13–1.58	0.001
Upper limb fat to lean mass ratio (per 10 kg)	1.21	1.05–1.40	0.008
Lower limb fat to lean mass ratio (per 10 kg)	1.20	1.05–1.37	0.007

^aRelationship between body composition and any high intensity back pain (at any time point), adjusted for age, gender, strenuous physical activity, and 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