The Association Between Conditioned Pain Modulation and Pain Catastrophizing in Chronic Low Back Pain

The sensitivity to pressure which is gradually increased is assessed. The procedure is performed at the back and the lower leg

A validated questionnaire that measures three domains of pain-related catastrophizing thoughts: helplessness, rumination and excessive magnification

The participant submerges one hand into a tank of cold (5 deg C), circulating water. The procedure is commonly know to decrease the sensitivity to pressure (PPT procedure) so that a difference appears in pain sensitivity when comparing PPT values before and after the procedure