The purpose of this entry is to outline various patient controlled influences which may affect the accuracy of the supine spinal balance test. Motivation for this study grew out of the need to maintain accurate and uniform test results, and a desire to discover possible causes of ill defined and or time consuming readings in some patients. This entry does not include discussion on those variables caused by the doctor, which may also induce inaccuracy into the test . For doctor induced errors click here . The presence of rear pocket items, wallet, handkerchief, etc.
Asymmetrical table handle grip by the patient while pulling down and pushing up.
Ponytails or large hair clips worn on the posterior aspect of the head which may prevent a relaxed and natural head position on the headpiece. Earrings, Kleenex or other items held in the patients hands while they are performing the pull down and push up cycle. The patient pulling down an excessive distance causing the push up phase to be awkward or imbalanced. The patient slipping their grip while pulling down or pushing up. Unequal pulling - pushing force due to pain weakness or disability.