Hi Bikegirl, yep its indicative for hyperventilation syndrome. the pass/fail is 23 so as an indicative marker, so you scored below the diagnostic indicator.. However, with a score like yours I would probably look at stuff around you breathing pattern. The basic idea is that diaphragm function is not just important for the gas exchange stuff, but it is very important in maintaining core stability (sorry alophysio!). for example your breathing pattern should change when you are going to lift something, this relies on normal diaphragm movement. The diaphram, pelvic floor muscles et al. should work in an almost orchestra type way to maintain spinal stiffness my maintaing intraabdominal pressure. If you have a stiff thoracic spine/ribs if you use the neck and shoulder muscles for quiet breathing, i.e. they are dominant it cannot do this. have a look at "Hyperventilation and the body" c gilbert in A & E nursing 1999 vol 7 130 to 140 and "understanding breathing" by leon chaitow in massage and bodywork june/july 2007 28 - 40. It might not give you the answer as to what is going wrong with yourSIJ, but it might give you a why. Other thing to look for with breathing pattern disorders are frequent sighs, yawns holding your breath, the need to speak quickly inbetween deep audible breaths, inability to breath nasally.
pleasant reding
gwynn