BMC Musculoskeletal Disorders

Table 3 Relationships between hip aBMD and lean mass stratified by fat mass tertiles, correspondingly; fat mass stratified by lean mass tertiles, given per SD change and displayed as g/cm². For girls and boys 15–17 years of age. The Tromsø Study, Fit Futures 1

From: Bone mineral density at the hip and its relation to fat mass and lean mass in adolescents: the Tromsø Study, Fit Futures

			GIRLS n = 395				BOYS n = 363
			Unadjusted		Adjusted^a		Unadjusted			Adjusted^a
		n	Beta	p	Beta	p	n	Beta	p	Beta	p
Femoral neck
Lean Mass (SD)	FM - Low	132	0.069	< 0.001	0.087	< 0.001	121	0.080	< 0.001	0.073	< 0.001
	FM - Medium	132	0.061	< 0.001	0.049	0.002	121	0.102	< 0.001	0.095	< 0.001
	FM - High	131	0.036	< 0.001	0.035	0.002	121	0.067	< 0.001	0.063	< 0.001
Fat Mass (SD)	LM - Low	132	0.040	0.006	0.038	0.009	121	0.019	0.215	0.040	0.010
	LM - Medium	132	0.022	0.067	0.030	0.017	120	0.006	0.633	0.017	0.180
	LM - High	131	0.012	0.144	0.024	0.009	122	−0.014	0.154	0.003	0.776
Total hip
Lean Mass (SD)	FM - Low	132	0.062	< 0.001	0.088	< 0.001	121	0.074	< 0.001	0.065	< 0.001
	LM - Medium	132	0.061	< 0.001	0.056	< 0.001	121	0.096	< 0.001	0.105	< 0.001
	FM - High	131	0.025	0.008	0.034	0.003	121	0.063	< 0.001	0.069	< 0.001
Fat Mass (SD)	LM - Low	132	0.045	0.002	0.045	0.002	121	0.018	0.268	0.041	0.009
	LM - Medium	132	0.023	0.052	0.026	0.032	120	−0.004	0.734	0.008	0.516
	LM - High	131	0.016	0.065	0.030	0.001	122	−0.009	0.360	0.010	0.366

^aAdjusted for age, height, sexual maturity, physical activity levels, calcium intake, vitamin D levels, alcohol consumption and smoking habits
Girls: FM-Low; ≤ 15.48 kg, FM-Medium; 15.49–21.01 kg, FM-High; ≥ 21.02 kg
LM-Low; ≤ 36.75 kg, LM-Medium; 36.76–40.31 kg, LM-High; ≥ 40.32 kg
Boys: FM-Low; ≤ 8.04 kg, FM-Medium; 8.05–15.29 kg, FM-High; ≥ 15.30 kg
LM-Low; ≤ 50.88 kg, LM-Medium; 50.89–56.41 kg, LM-High; ≥ 56.42 kg

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ISSN: 1471-2474

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