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Anthropometry, bone mineral parameters and biomechanical calculations of femoral neck. |
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| Intervention |
control |
p-value |
|
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|
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| Baseline |
(N = 42) |
(N = 43) |
|
|
|
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| Total body |
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| Weight (kg) |
27.8 (5.4) |
26.5 (4.3) |
0.22 |
| Height (cm) |
128.8 (5.1) |
128.7 (7.5) |
0.94 |
| Lean mass (kg) |
20.1 (2.3) |
20.0 (2.6) |
0.90 |
| Fat mass (kg) |
5.3 (3.7) |
4.5 (2.4) |
0.28 |
| Femoral neck |
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| BMC (g) |
2.524 (0.468) |
2.536 (0.497) |
0.91 |
| BMD (g/cm2) |
0.722 (0.091) |
0.701 (0.090) |
0.30 |
| Cross-sectional area (CSA, cm2) |
0.909 (0.141) |
0.889 (0.152) |
0.54 |
| Periosteal width (cm) |
2.424 (0.162) |
2.463 (0.225) |
0.37 |
| Section modulus (Z, cm3) |
0.279 (0.064) |
0.272 (0.082) |
0.66 |
| Cross-sectional moment of inertia (CSMI, cm4) |
0.341 (0.096) |
0.338 (0.130) |
0.90 |
| Follow-Up |
(N = 42) |
(N = 43) |
|
|
|
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| Total body |
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| Weight (kg) |
35.6 (8.0) |
32.5 (5.7) |
0.04 |
| Height (cm) |
141.0 (6.5) |
139.7 (8.0) |
0.45 |
| Lean mass (kg) |
24.6 (3.5) |
23.6 (3.0) |
0.18 |
| Fat mass (kg) |
8.9 (5.8) |
6.3 (3.4) |
0.01 |
| Femoral neck |
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| BMC (g) |
3.146 (0.506) |
3.030 (0.518) |
0.30 |
| BMD (g/cm2) |
0.803 (0.080) |
0.789 (0.103) |
0.50 |
| Cross-sectional area (CSA, cm2) |
1.100 (0.175) |
1.067 (0.187) |
0.41 |
| Periosteal width (cm) |
2.640 (0.226) |
2.593 (0.190) |
0.30 |
| Section modulus (Z, cm3) |
0.377 (0.085) |
0.368 (0.099) |
0.66 |
| Cross-sectional moment of inertia (CSMI, cm4) |
0.506 (0.154) |
0.483 (0.159) |
0.49 |
| Annual Changes |
(N = 42) |
(N = 43) |
|
|
|
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| Total body |
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| Weight (kg) |
3.9 (1.6) |
3.0 (1.1) |
0.006 |
| Height (cm) |
6.0 (1.1) |
5.6 (0.9) |
0.06 |
| Lean mass (kg) |
2.3 (0.8) |
1.8 (0.5) |
0.003 |
| Fat mass (kg) |
1.8 (1.3) |
0.9 (0.7) |
0.001 |
| Femoral neck |
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| BMC (g) |
0.310 (0.234) |
0.252 (0.236) |
0.25 |
| BMD (g/cm2) |
0.040 (0.033) |
0.045 (0.042) |
0.62 |
| Cross-sectional area (CSA, cm2) |
0.095 (0.065) |
0.091 (0.078) |
0.77 |
| Periosteal width (cm) |
0.107 (0.107) |
0.067 (0.113) |
0.10 |
| Section modulus (Z, cm3) |
0.049 (0.030) |
0.049 (0.042) |
0.98 |
| Cross-sectional moment of inertia (CSMI, cm4) |
0.082 (0.057) |
0.074 (0.067) |
0.54 |
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Comparison between the intervention group (n = 42) and the control group (n = 43) in anthropometrics, bone mineral parameters and biomechanical calculations in femoral neck at baseline, at two year follow-up and in annual changes during the follow-up period. Data presented as mean ± SD. | |||
Alwis et al. Dynamic Medicine 2008 7:8 doi:10.1186/1476-5918-7-8 |
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