Biomedical Engineering Reference
In-Depth Information
Tabl e 3
Results for MS group with BBS
52
Subjects
1
*
2
3
4
5
6
7
8
9
10
11
12
BBS 54 55 52 55 54 56 55 55 56 56 56 54 55
ML 4,0 3,3 2,7 2,7 2,0 6,7 3,0 3,3 1,7 6,3 2,3 3,3 3,4
AP 9,0 9,7 7,0 4,0 5,3 12 8,3 3,0 3,0 13 3,7 4,3 6,9
TD 99 88 114 88 87 108 117 113 84 106 91 94 99
EA 5,5 3,6 3,3 2,4 1,4 14 3,6 1,5 0,7 10 0,7 4,4 4,3
Values are the mean (M
*
) of 3 trials for 29 MS subjects and 28 healthy subjects in millimetres
ML
Medio-lateral COP displacement,
TD
Total COP displacement,
AP
Anterior-posterior COP
displacement,
EA
Ellipse area (mm2)
Tabl e 4
Support phase
of gait - results
MS Subjects
ML
AP
TD
CT
Right foot
37,73
209,28
369,63
1,35
Left foot
35,45
215,37
370,91
1,35
Healthy Subjects
ML AP TD CT
Right foot 34,12 226,54 334,00 1,03
Left foot 29,08 228,26 342,36 1,01
Values are the mean of three trials for 29 MS
subjects and 28 healthy subjects in millimetres
ML
Medio-lateral COP displacement,
AP
Anterior-posterior COP displacement,
TD
Tot al
COP displacement,
CT
Contact time (s)
between BBS and ML, AP, TD (p
0,05), indicating that high values of BBS are
associated with low values of ML, AP and TD. The ML displacement has strongly
positive correlation with the AP displacement (rs
<
D
0.835), EA (rs
D
0,763) and also
a positive moderate intensity with TD (rs
D
0,555).
3.8
Support Phase of Gait
Results for plantar pressure assessments in support phase of gait (1-step protocol)
are listed in Table
4
. In 1-step protocol, ML, TD and CT values for both feet are
higher compared to control group. In both groups (MS and healthy) the ML COP
displacement for left foot is inferior than registered in right foot.
We also observed in MS group that the AP COP displacement is lower than
they were assessed in the control group. This is because some subjects did not
perform the initial contact with the heel but with metatarsal region. This difference
in first contact area decreased the AP COP displacement, contrary to what would
be expected. In total displacement we assisted to opposite behavior to that seen
in ML parameter. For both groups (MS and healthy) the TD value is superior
