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Table 4 Unaffected leg peak knee EAMs and loading rates

From: Effects of a powered ankle-foot prosthesis on kinetic loading of the unaffected leg during level-ground walking

Speed

Unaffected leg 1stpeak 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

  1. 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.