Table 4.
Unaffected leg peak knee EAMs and loading rates
|
Speed |
Unaffected leg 1st peak EAM (Nm/kg) |
Unaffected leg EAM rate (Nm/kg/s) |
||||||
|---|---|---|---|---|---|---|---|---|
| (m/s) | Passive | Powered | % Diff | Control | Passive | Powered | % Diff | Control |
| 0.75 |
0.41 ± 0.13 |
0.39 ± 0.08 |
-5.1 |
0.39 ± 0.13 |
1.95 ± 0.85 |
1.84 ± 0.42 |
-5.4 |
1.74 ± 0.88 |
| 1.00 |
0.42 ± 0.12 |
0.42 ± 0.09 |
-0.8 |
0.34 ± 0.14 |
2.73 ± 1.10 |
2.24 ± 0.68 |
-17.9 |
1.86 ± 1.08 |
| 1.25 |
0.50 ± 0.14 |
0.47 ± 0.10 |
-5.5 |
0.38 ± 0.11 |
3.89 ± 1.43 |
3.38 ± 1.02 |
-12.9 |
2.64 ± 1.15 |
| 1.50 |
0.61 ± 0.16* |
0.49 ± 0.06 |
-20.6 |
0.44 ± 0.14 |
4.79 ± 1.55 |
3.73 ± 0.82 |
-22.1 |
3.72 ± 1.79 |
| 1.75 | 0.68 ± 0.16* | 0.60 ± 0.14 | -12.2 | 0.50 ± 0.15 | 6.01 ± 1.60 | 5.11 ± 1.66 | -15.0 | 4.49 ± 1.29 |
Average ± S.D. first peak knee EAMs and loading rates of the unaffected leg of each subject with an amputation using a passive-elastic (Passive) or powered (Powered) prosthesis, and non-amputee subjects (Control) across a range of walking speeds. * indicates a significant difference (P ≤ 0.05) between subjects with an amputation using the passive-elastic versus powered prostheses. P-values for EAM loading rates between subjects with an amputation using the passive-elastic versus powered prostheses were 0.60, 0.07, 0.14, 0.07, and 0.17, at speeds of 0.75, 1.00, 1.25, 1.50, and 1.75 m/s, respectively.