Listing abbreviations of PR, PL, ASL, Posterior Sacrum, PIL, PIR and
PI Ilium represent attendant muscular reflex hypertonicitys found on the
levels of articular dysfunction. These designations also convey the
direction of force applied to a specified segment. Muscular activity
is documented consistent with patterns typically associated with these
listings. The muscles that are most frequently monitored are the
suboccipitals, transversospinals, erector spinae, levator scapulae, piriformis
and gluteals. Therefore muscular activity is represented by these
same abbreviations.