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WITH HELP OF APPARATUS. 97
may have an immovable attachment from which to start their
action. In doing so, they for the time compress the vessels, and
the blood is largely driven out of the limbs. If now, as so often
happens, the patient holds his breath, the blood does not pass so
well into the lungs, and the abdominal muscles adding their
pressure, the right side of the heart gets overfilled with venous
blood. Thus we have also backward pressure in the vessels of
the head and neck.
The movements are made very slowly, and in both we make
the patient stop at different angles to the plane in which he lies.
This greatly increases the muscular work.
Fig. 60.
We can, in the movement shown in fig. 60, augment the work
by folding the hands behind the neck, and again by having the
arms stretched straight up. The patients, when they begin to
feel tired of continuing the exercise, have a habit of drawing the
shoulders forwards and thus pressing the chest together. This
is on no account to be allowed.
These exercises are to be used in weakness and pain in the
lumbar region. They also act on the organs in the abdominal
cavity.
In the position the patient occupies in fig. 59, a movement
G
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