Pain catastrophizing predicts pain intensity during a neurodynamic test for the median nerve in healthy participants

Beneciuk, Jason M.; Bishop, Mark D.; George, Steven Z.

doi:10.1016/j.math.2010.02.008

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Volume 15, Issue 4 , Pages 370-375, August 2010

Pain catastrophizing predicts pain intensity during a neurodynamic test for the median nerve in healthy participants☆

Jason M. Beneciuk
- University of Florida, Department of Physical Therapy, PO Box 100154, Gainesville, FL 32610-0154, USA
- Corresponding author. Tel.: +1 352 273 6085; fax: +1 352 273 6109.
Mark D. Bishop
- University of Florida, Department of Physical Therapy, PO Box 100154, Gainesville, FL 32610-0154, USA
- Center for Pain Research and Behavioral Health, University of Florida, Gainesville, FL, USA
Steven Z. George
- University of Florida, Department of Physical Therapy, PO Box 100154, Gainesville, FL 32610-0154, USA
- Brooks Center for Rehabilitation Studies, University of Florida, Gainesville, FL, USA
- Center for Pain Research and Behavioral Health, University of Florida, Gainesville, FL, USA
- Corresponding author. University of Florida, Department of Physical Therapy, PO Box 100154, Gainesville, FL 32610-0154, USA. Tel.: +1 352 273 6432; fax: +1 352 273 6109.

Received 1 May 2009; received in revised form 14 February 2010; accepted 19 February 2010. published online 01 April 2010.

Abstract

Psychological factors within the Fear-Avoidance Model of Musculoskeletal Pain (FAM) predict clinical and experimental pain in both symptomatic and asymptomatic individuals. Clinicians routinely examine individuals with provocative testing procedures that evoke symptoms. The purpose of this study was to investigate which FAM factors were associated with evoked pain intensity, non-painful symptom intensity, and range of motion during an upper-limb neurodynamic test. Healthy participants (n = 62) completed psychological questionnaires for pain catastrophizing, fear of pain, kinesiophobia, and anxiety prior to neurodynamic testing. Pain intensity, non-painful sensation intensity, and elbow range of motion (ROM) were collected during testing and served as dependent variables in separate simultaneous regression models. All the psychological predictors in the model accounted for 18% of the variance in evoked pain intensity (p = .02), with only pain catastrophizing (β = .442, p < .01) contributing uniquely to the model. Psychological predictors did not explain significant amounts of variance for the non-painful sensation intensity and ROM models. These findings suggest that pain catastrophizing contributed specifically to evoked pain intensity ratings during neurodynamic testing for healthy subjects. Although these findings cannot be directly translated to clinical practice, the influence of pain catastrophizing on evoked pain responses should be considered during neurodynamic testing.

Keywords: Neurodynamic testing, Fear-avoidance model of musculoskeletal pain, Pain catastrophizing