Table 2.

Distributions of age-related changes in body composition and bone mineral density

Age (years)	N	WBLM (kg)	WBFM (kg)	Fat %	Android FM (kg)	Gynoid FM (kg)	A/G FMR	ALM (kg)	WBBMD (g/cm2)	LSBMD (g/cm2)	FNBMD (g/cm2)	THBMD (g/cm2)
Male
20–29	199	47.3±6.0*	12.1±8.2*	18.1±9.0*	1.2±0.9*	2.4±1.3*	0.47±0.14*	21.6±3.3*	1.102±0.103	1.126±0.151	0.958±0.140	0.954±0.153
30–39	254	47.0±5.9*	12.8±7.3*	19.4±8.2*	1.4±0.9*	2.4±1.3†	0.55±0.16*	21.0±3.3*	1.090±0.113*	1.110±0.149	0.909±0.140‡	0.922±0.154*
40–49	333	48.3±6.0*	15.4±7.2*	22.1±7.6*	1.7±0.9*	2.6±1.0	0.63±0.17*	21.5±3.2*	1.119±0.108‡	1.111±0.178	0.908±0.137	0.947±0.147
50–59	313	48.1±6.1*	15.2±6.5	22.2±7.2†	1.7±0.8*	2.5±0.9	0.67±0.18*	21.0±3.2*	1.122±0.110	1.096±0.192	0.895±0.140	0.946±0.154†
60–69	281	46.9±5.4*	15.5±6.5	23.0±7.3†	1.8±0.8*	2.5±0.9	0.71±0.19*	20.4±2.8*	1.122±0.098	1.116±0.190	0.843±0.120	0.924±0.125
70+	323	43.6±5.2*	15.0±6.5	23.8±7.5	1.7±0.9‡	2.4±0.9	0.70±0.19*	18.4±2.7*	1.086±0.101	1.086±0.215*	0.783±0.135*	0.863±0.147†
Female
20–29	369	32.5±4.2	15.5±6.1	30.1±7.1	1.3±0.6	3.2±1.0	0.38±0.09	14.0±2.1	1.048±0.090	1.103±0.135	0.891±0.126	0.912±0.138
30–39	456	33.5±4.0	16.0±6.0	30.2±6.7	1.4±0.6	3.2±1.0	0.42±0.11	14.3±2.0	1.084±0.090	1.131±0.152	0.917±0.119	0.942±0.123
40–49	709	34.7±4.4	17.8±5.8	31.9±6.4	1.5±0.6	3.5±0.9	0.45±0.10	14.7±2.2	1.105±0.093	1.131±0.165	0.908±0.122	0.958±0.131
50–59	1004	34.6±4.0	19.0±6.3	33.4±6.6	1.8±0.7	3.4±1.0	0.52±0.13	14.4±2.1	1.039±0.103	1.008±0.186	0.828±0.126	0.880±0.137
60–69	805	34.5±3.9	19.1±6.1	33.7±7.1	1.9±0.7	3.3±0.9	0.57±0.15	14.2±2.0	0.986±0.095	0.931±0.171	0.749±0.113	0.814±0.128
70+	703	33.2±3.9	18.4±6.1	33.8±7.1	1.9±0.7	3.1±0.9	0.59±0.16	13.3±1.9	0.939±0.094	0.889±0.177	0.672±0.105	0.732±0.125

Values are presented as number or mean±SD.

Compared with women of the same age group (unpaired-sample t-tests).

*P <0.001.

†P <0.05.

‡P <0.01.

A/G FMR, android/gynoid fat mass ratio; ALM, appendicular lean mass; fat %, percentage of whole body fat mass; FM, fat mass; FNBMD, femoral neck bone mineral density; LSBMD, lumbar spine bone mineral density; THBMD, total hip bone mineral density; WBBMD, whole body bone mineral density; WBFM, whole body fat mass; WBLM, whole body lean mass.