Table 4.
Segment mass, center of mass (COM), radius of gyration (ROG) of segments of interest for male subjects with acute and chronic SCI. COM is expressed as the longitudinal distance from proximal (superior end of trunk) end to the COM location of each segment as a percentage of segment length. Mean ± SD are reported.
| Acute (< 3 years) | Chronic (≥3 years) | p-value (N=78) | ||||||
|---|---|---|---|---|---|---|---|---|
|
|
|
|
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| Segment | BMI <25 (N=20) | BMI≥25 (N=12) | Total (N=32) | BMI <25 (N=21 ) | BMI≥25 (N=25) | Total (N=46) | Acute vs. Chronic | Obese vs. non-obese |
| Mass (kg) | ||||||||
|
|
||||||||
| Trunk | 33.0 ± 5.7 | 47.7 ± 9.9 | 38.5 ± 10.4 | 33.7 ± 5.1 | 52.0 ± 10.9 | 43.7 ± 12.6 | 0.258 | <0.001 |
| Thigh | 7.8 ± 1.4 | 10.7 ± 3.0 | 8.9 ± 2.5 | 7.7 ± 2.0 | 11.0 ± 2.7 | 9.5 ± 2.9 | 0.788 | <0.001 |
| Shank | 2.6 ± 0.4 | 3.2 ± 0.8 | 2.8 ± 0.7 | 2.5 ± 0.6 | 3.2 ± 0.7 | 2.9 ± 0.7 | 0.883 | <0.001 |
| Upper Arma | 2.5 ± 0.7 | 2.8 ± 0.6 | 2.6 ± 0.6 | 2.4 ± 0.6 | 3.6 ± 0.7 | 3.0 ± 0.9 | 0.004 | <0.001 |
| Forearma | 1.0 ± 0.2 | 1.2 ± 0.2 | 1.1 ± 0.2 | 1.1 ± 0.2 | 1.5 ± 0.3 | 1.3 ± 0.3 | 0.004 | <0.001 |
|
| ||||||||
| Mass (%Body Mass) | ||||||||
|
|
||||||||
| Trunk | 47.7 ± 2.7 | 50.6 ± 4.0 | 48.8 ± 3.5 | 50.7 ± 2.3 | 53.1 ± 3.6 | 52.0 ± 3.3 | <0.001 | 0.001 |
| Thigh | 11.6 ± 1.2 | 12.4 ± 1.1 | 11.9 ± 1.2 | 10.5 ± 1.4 | 10.8 ± 1.6 | 10.7 ± 1.5 | <0.001 | 0.111 |
| Shank | 3.8 ± 0.4 | 3.7 ± 0.4 | 3.8 ± 0.4 | 3.4 ± 0.3 | 3.2 ± 0.6 | 3.3 ± 0.5 | <0.001 | 0.059 |
| Upper Arm | 3.4 ± 0.7 | 3.0 ± 0.3 | 3.3 ± 0.6 | 3.7 ± 0.8 | 3.7 ± 0.9 | 3.7 ± 0.8 | 0.009 | 0.281 |
| Forearm | 1.5 ± 0.2 | 1.4 ± 0.1 | 1.4 ± 0.2 | 1.6 ± 0.4 | 1.4 ± 0.3 | 1.5 ± 0.3 | 0.094 | 0.073 |
|
| ||||||||
| Center of Mass (%Segment Length) | ||||||||
|
|
||||||||
| Trunk | 54.6 ± 1.7 | 55.2 ± 1.4 | 54.8 ± 1.6 | 54.9 ± 1.3 | 54.4 ± 1.6 | 54.6 ± 1.5 | 0.488 | 0.099 |
| Thigh | 42.5 ± 1.8 | 40.2 ± 2.7 | 41.6 ± 2.5 | 42.3 ± 2.5 | 40.8 ± 2.3 | 41.5 ± 2.5 | 0.677 | 0.001 |
| Shank | 43.4 ± 1.2 | 42.8 ± 0.9 | 43.2 ± 1.1 | 43.4 ± 1.3 | 43.8 ± 4.6 | 43.6 ± 3.5 | 0.432 | 0.862 |
| Upper Arm | 53.7 ± 1.8 | 56.3 ± 2.8 | 54.7 ± 2.5 | 53.6 ± 2.3 | 55.9 ± 3.3 | 54.8 ± 3.1 | 0.633 | <0.001 |
| Forearm | 43.2 ± 1.0 | 43.1 ± 1.0 | 43.2 ± 1.0 | 42.8 ± 1.8 | 42.9 ± 2.0 | 42.9 ± 1.9 | 0.462 | 0.978 |
|
| ||||||||
| Radius of Gyration (%Segment Length) | ||||||||
|
|
||||||||
| Trunk | 28.4 ± 0.7 | 28.0 ± 1.0 | 28.2 ± 0.8 | 28.0 ± 1.0 | 27.8 ± 1.1 | 27.9 ± 1.1 | 0.193 | 0.231 |
| Thigh | 27.8 ± 1.0 | 29.1 ± 2.1 | 28.3 ± 1.6 | 28.2 ± 1.0 | 29.0 ± 1.3 | 28.6 ± 1.2 | 0.676 | 0.001 |
| Shank | 24.2 ± 0.7 | 23.7 ± 0.8 | 24.0 ± 0.7 | 24.1 ± 0.6 | 23.7 ± 1.1 | 23.9 ± 0.9 | 0.654 | 0.019 |
| Upper Arm | 20.2 ± 1.0 | 19.8 ± 1.7 | 20.1 ± 1.3 | 20.5 ± 0.6 | 20.3 ± 1.8 | 20.4 ± 1.4 | 0.217 | 0.351 |
| Forearm | 24.2 ± 0.5 | 24.4 ± 0.9 | 24.2 ± 0.7 | 24.8 ± 0.9 | 24.5 ± 1.0 | 24.7 ± 1.0 | 0.062 | 0.952 |
a
Obesity*time interaction