Muscle-Bone Interactions in Chinese Men and Women Aged 18–35 Years

Table 3

Regional areal bone density (mean ± SD).

Variable	Female (n = 25)		Male (n = 28)
	Younger (n = 15)	Older (n = 10)	Younger (n = 15)	Older (n = 13)
L1–L4 aBMD (g/cm^2)	1.192 ± 0.108	1.170 ± 0.196	1.222 ± 0.084	1.216 ± 0.087
L1–L4 Z-score	0.327 ± 0.602	0.140 ± 1.356	0.257 ± 0.736	0.154 ± 0.645
Left femoral neck aBMD (g/cm^2)	0.994 ± 0.190^b	0.921 ± 0.207^b	1.121 ± 0.134^a	1.098 ± 0.189^a
Left femoral neck Z-score	−0.479 ± 0.784	−0.570 ± 1.239	0.214 ± 1.030	0.331 ± 1.331
Right femoral neck aBMD (g/cm^2)	1.011 ± 0.188^b	0.923 ± 0.229^b	1.129 ± 0.130^a	1.080 ± 0.167^a
Right femoral neck Z-score	−0.300 ± 0.813	−0.540 ± 1.409	0.271 ± 0.992	0.185 ± 1.175
Left trochanter aBMD (g/cm^2)	0.762 ± 0.139^b	0.743 ± 0.212^b	0.908 ± 0.118^a	0.865 ± 0.105^a
Left trochanter Z-score	−0.779 ± 0.772	−0.670 ± 1.572	−0.214 ± 1.082	−0.415 ± 0.839
Right trochanter aBMD (g/cm^2)	0.763 ± 0.151^b	0.752 ± 0.215^b	0.921 ± 0.121^a	0.868 ± 0.115^a
Right trochanter Z-score	−0.771 ± 0.882	−0.600 ± 1.619	−0.107 ± 1.089	−0.408 ± 0.948
Left total hip aBMD (g/cm^2)	1.000 ± 0.163^b	0.948 ± 0.214^b	1.137 ± 0.131^a	1.010 ± 0.137^a
Left total hip Z-score	−0.086 ± 0.865	−0.240 ± 1.456	0.271 ± 0.875	0.162 ± 0.844
Right total hip aBMD (g/cm^2)	1.010 ± 0.163^b	0.949 ± 0.217^b	1.140 ± 0.124^a	1.087 ± 0.144^a
Right total hip Z-score	0.000 ± 0.855	−0.240 ± 1.480	0.314 ± 0.832	0.077 ± 0.916

L1–L4: 1^st to 4^th lumbar vertebrae; aBMD: areal bone mineral density; g/cm²: gram per square centimeter; SD: standard deviation; ; ; a > b.