Full resolution (JPEG) - On this page / på denna sida - Active Movements - II. Bound - B. Made under Resistance either from Patient or Operator - Turning of the Trunk in the sitting posture
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MADE UNDER RESISTANCE. 105
This resistance must be equal on both sides. When the patient
has gone round as far as he can, he turns forwards again, also
under resistance, which, however, has changed, being in front
on the left side and behind on the right. When he again sits
with the face straight forwards, a few seconds’ rest is made, and
the same repeated on the other side.
If we recall the arrangement of the muscles of the trunk, we
iMg. OS.
shall understand how wide the effect of this exercise really is.
Starting below at the crest of the ilium on the right, the fibres
of the external oblique of the abdomen pass upwards and back-
wards. In the region of the thorax this same direction is main-
tained by the external intercostal muscles ; still further back
there is a similar arrangement in the short fibres which con-
stitute the great oblique rotator muscles of the spine ; and we
must also remember that in front we have the internal oblique
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