To understand why Reverse Pigeon Pose works to stretch the piriformis we need to know that
the actions of this particular muscle vary according to the position of the hip joint.
Not exact matches
Although you may be most comfortable holding the baby in one
particular arm, this
action resembles the changing
of sides in breastfeeding and helps to stimulate both sides
of the baby's body - especially eye
muscle development.
It is often taken to be a good indicator
of how large the EMG amplitude can be as a result
of a
particular muscle action, although the extent to which this could be affected by noise and causative factors is unclear.
When
muscles are lengthened or shortened, this seems to alter the cross-sectional area
of the
muscle fiber, which probably changes
muscle conduction velocity (Kamen & Caldwell, 1996) and may also change the geometry
of the
particular region
of the
muscle being measured during the
muscle action.
Muscle cells, in
particular react sluggishly to the desirable
action of insulin and are starved for energy.