Models of stability, stiffness, pain catastrophizing, fear of movement and changes in these outcome measures due to a capsaicin experimental neck pain protocol.
The purpose of our investigation was to determine the changes in upper back and lower back local dynamic stability (LDS) and lumbar rotational stiffness after experiencing neck pain, and to examine the models used to measure LDS and stiffness as well as the Pain Catastrophizing Scale (PCS) and Tampa Scale of Kinesiophobia (TSK). We found significant changes immediately after capsaicin/heat induced neck pain, in upper back LDS but not lower back LDS or lumbar rotational stiffness. Contrary to previous evidence LDS and rotational stiffness did not relate with one another. PCS and TSK were moderately correlated with LDS but weakly negatively correlated with stiffness. PCS scores significantly changed between baseline and experiencing pain. This suggests that lower back stability may not be influenced by pain similar to our experimental protocol and provides further avenues for continued research of the models we use to determine stability, catastrophizing and fear of motion.