Biomedical Engineering Reference
In-Depth Information
1800
Contraction Velocity (mm/s)
1200
500
400
300
600
200
100
0
50
100
150
Angle (deg)
Figure 11.13
Examples of reference angular velocity curve for iso-contractile mode (H
=
177 m).
Table 11.3
Information of subjects
Subject Maximum torque Dominant hand Height
A
45Nm
Left
177 m
B
35Nm
Right
163 m
C
23Nm
Right
172 m
Assuming
r
as 10% of
R
,
r
=
0.1
×
H
(11.8)
11.5.2 Experimental Method
Experiments and subjects are the same as in Section 4.2. Control input for subjects
was calculated from heights in
Table 11.3
and
Eqs. (11.3)
, (11.7),
and
(11.8)
.
11.5.3 Experimental Results
Our proposal on isokinetic contraction exercises was tried on training equipment
with the MR fluid brake. Results for subject A are shown in
Fig. 11.14
,
with time
on the horizontal axis and muscle contraction velocity on the vertical axis, and
in
Fig. 11.15
,
with angles on the horizontal axis and contraction velocity on the
vertical axis. Reference velocity is given from 0mm/s to the maximum speed
