Table 2 BMD, body composition, and physical performance in JIA patients and in controls
| Â | JIA patients (n = 31) | Controls (n = 84) | p |
|---|---|---|---|
LS BMD (g/cm2) | 1.09 ± 0.15 | 1.226 ± 0.10 | <0.001 |
LS T-score | -0.54 ± 1.09 | 0.25 ± 0.85 | 0.003 |
Total femur BMD (g/cm2) | 0.92 ± 0.16 | 1.14 ± 0.10 | <0.001 |
Total femur T-score | -0.94 ± 1.13 | 0.67 ± 0.77 | <0.001 |
Femoral neck BMD (g/cm2) | 0.93 ± 0.17 | 1.13 ± 0.11 | <0.001 |
Femoral neck T-score | -0.97 ± 1.21 | 0.54 ± 0.88 | <0.001 |
Trochanter BMD (g/cm2) | 0.69 ± 0.14 | 0.89 ± 0.10 | <0.001 |
Trochanter T-score | -1.73 ± 1.35 | -0.01 ± 0.97 | <0.001 |
Distal radius BMD (g/cm2) | 0.68 ± 0.08 | 0.73 ± 0.07 | 0.007 |
Distal radius T-score | -0.59 ± 1.06 | -0.30 ± 0.77 | 0.168 |
Total body BMD (g/cm2) | 1.07 ± 0.19 | 1.21 ± 0.08 | <0.001 |
Total body T-score | -0.40 ± 0.92 | 0.64 ± 0.82 | <0.001 |
Total body composition | Â | ||
Tissue mass (g) | 63914 ± 11660 | 66813 ± 12338 | 0.273 |
Fat mass (%) | 31.67 ± 10.63 | 24.93 ± 8.71 | 0.001 |
Lean mass (%) | 64.64 ± 10.28 | 70.86 ± 8.52 | 0.002 |
BMC (%) | 3.70 ± 0.48 | 4.20 ± 0.40 | <0.001 |
Arms composition | Â | ||
Tissue mass (g) | 7116 ± 1846 | 7446 ± 2017 | 0.578 |
Fat mass (%) | 30.28 ± 12.23 | 21.79 ± 11.03 | <0.001 |
Lean mass (%) | 65.47 ± 11.69 | 73.28 ± 10.71 | 0.001 |
BMC (%) | 4.25 ± 0.80 | 4.94 ± 0.69 | <0.001 |
Legs composition | Â | ||
Tissue mass (g) | 22922 ± 4009 | 23974 ± 4134 | 0.238 |
Fat mass (%) | 34.86 ± 12.03 | 26.62 ± 9.36 | <0.001 |
Lean mass (%) | 61.33 ± 11.54 | 68.89 ± 9.04 | <0.001 |
BMC (%) | 3.82 ± 0.62 | 4.49 ± 0.50 | <0.001 |
Trunk composition | Â | ||
Tissue mass (g) | 30207 ± 6538 | 31302.0 ± 6245 | 0.426 |
Fat mass (%) | 31.20 ± 11.28 | 25.84 ± 9.15 | 0.013 |
Lean mass (%) | 66.39 ± 11.10 | 71.31 ± 9.03 | 0.021 |
BMC (%) | 2.41 ± 0.37 | 2.85 ± 0.32 | <0.001 |
Chair rise (5x) (sec) | 10.29 ± 4.07 | 6.24 ± 1.47 | <0.001 |
Walking rate (m/sec) | 1.22 ± 0.33 | 1.40 ± 0.27 | 0.002 |