| |
Preactivation
|
Acceptance
|
Middle stance
|
Late stance
|
Swing phase
|
|---|
| |
Group mean
|
P-value
|
Group mean
|
P-value
|
Group mean
|
P-value
|
Group mean
|
P-value
|
Group mean
|
P-value
|
|---|
|
Gluteus medius (S)
|
0.41 ± 0.23
|
0.312
|
0.58 ± 0.19
|
0.115
|
0.24 ± 0.11
|
0.818
|
0.16 ± 0.11
|
0.198
|
0.26 ± 0.14
|
0.262
|
|
Gluteus medius (H)
|
0.34 ± 0.12
|
0.68 ± 0.07
|
0.25 ± 0.10
|
0.11 ± 0.05
|
0.20 ± 0.09
|
|
Gluteus maximus (S)
|
0.46 ± 0.18
|
0.593
|
0.62 ± 0.22
|
0.473
|
0.37 ± 0.17
|
0.288
|
0.34 ± 0.19
|
0.502
|
0.37 ± 0.13
|
0.433
|
|
Gluteus maximus (H)
|
0.49 ± 0.11
|
0.66 ± 0.12
|
0.32 ± 0.13
|
0.30 ± 0.12
|
0.33 ± 0.10
|
|
Rectus femoris (S)
|
0.40 ± 0.17
|
0.092
|
0.64 ± 0.18
|
0.884
|
0.20 ± 0.07
|
0.819
|
0.20 ± 0.06
|
0.309
|
0.22 ± 0.05
|
0.204
|
|
Rectus femoris (H)
|
0.51 ± 0.19
|
0.65 ± 0.10
|
0.21 ± 0.06
|
0.25 ± 0.11
|
0.25 ± 0.08
|
|
Biceps femoris (S)
|
0.51 ± 0.23
|
0.338
|
0.38 ± 0.18
|
0.494
|
0.20 ± 0.10
|
0.247
|
0.14 ± 0.13
|
0.209
|
0.33 ± 0.09
|
0.274
|
|
Biceps femoris (H)
|
0.59 ± 0.21
|
0.44 ± 0.16
|
0.15 ± 0.07
|
0.10 ± 0.04
|
0.30 ± 0.10
|
|
Tensor Fascia latae (S)
|
0.32 ± 0.16
|
0.757
|
0.61 ± 0.15
|
0.154
|
0.34 ± 0.17
|
0.820
|
0.23 ± 0.16
|
0.674
|
0.33 ± 0.16
|
0.238
|
|
Tensor Fascia latae (H)
|
0.34 ± 0.12
| |
0.68 ± 0.72
| |
0.35 ± 0.12
| |
0.21 ± 0.09
| |
0.26 ± 0.09
| |
- The sEMG data are presented as mean ± one standard deviation (SD) in 13 subjects with external snapping hip (S) and 13 healthy subjects (H) in the following time periods: preactivation (50 ms before heel strike), acceptance (load acceptance and initial single support), middle stance (knee extension and late single support), late stance (opposite foot contact) and swing phase (ipsilateral swing). The sEMG signals are normalized in amplitude to the maximum sEMG signal during gait and expressed as percent-maximum amplitudes.
