RESPONSE OF THE CENTRAL AND AUTONOMOUS NERVOUS SYSTEM IN RELATION TO CERVICAL VS DORSAL MANIPULATION: PILOT STUDY
Keywords:
cervical manipulation, back manipulation, pain, dermal conductance.Abstract
Introduction: vertebral manipulation is used to address vertebral problems such as movement restriction and pain. The conductance of the skin reflects the effect of vertebral manipulation, regarding pain and mechanosen-sitivity. Objectives: to measure changes in skin conductance and pressure pain threshold after cervical-dorsal ma-nipulation, as well as changes in pressure pain threshold in remote area tissues with respect to the manipulation technique. Material and method: randomized pilot clinical trial with masking of the evaluator (n = 16), with two groups. In one, a vertebral manipulation of the cervical spine was performed and in the other of the dorsal spine.
re-post manipulation measures were taken for pain and skin conductance, using algometry at the local and distal levels, and a biofeedback team, respectively. Results: significant differences were found between the pre and post variables for the region-PPT in both, dorsal (p < 0.05) and cervical (p < 0.001) mobilization groups, as well as for tibial-PPT variable in both, dorsal (p <0.05) and cervical mobilization group (p < 0.001). The mixed linear model showed significance between the time within each group (F2.11,34.88 = 28,077; p < 0.001) with a large effect size (η2 = 0.63). Conclusions: the application of impulse manipulation on the spine seems to cause a hypoalgesic effect at the local and distal level, being more effective if performed at the cervical level; in addition, to an increase in skin conductance.
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