Motor performance in chronic low back pain: is there an influence of pain-related cognitions? A pilot study

BMC Musculoskeletal Disorders

Research Article

Dymphy Kusters¹  Miriam M Vollenbroek-Hutten²  Hermie J Hermens² 

[1] Roessingh Research and Development, Enschede, The Netherlands;Roessingh Research and Development, Enschede, The Netherlands;Faculty of Electrical Engineering, Mathematics & Informatics, University of Twente, Enschede, The Netherlands;

关键词: chronic low back pain;    movement speed;    reaction time;    pain-related cognitions;   

DOI  :  10.1186/1471-2474-12-211

 received in 2011-06-30, accepted in 2011-09-27,  发布年份 2011

来源: Springer

【 摘 要 】

BackgroundChronic low back pain (CLBP) is often accompanied by an abnormal motor performance. However, it has not been clarified yet whether these deviations also occur during motor tasks not involving the back and whether the performance is influenced by pain and pain-related cognitions. Therefore, the aim of the present study is to get insight in the contribution of both pain experience and pain-related cognitions to general motor task performance in CLBP.Methods13 CLBP patients and 15 healthy subjects performed a hand-function task in three conditions: sitting, lying prone (lying) and lying prone without trunk support (provoking). The last condition was assumed to provoke pain-related cognitions, which was considered successful when a patients' pain expectancy on a numeric rating scale was at least 1 point higher than actual pain experienced. Subjects' performance was expressed in reaction time and movement time. Repeated measures analysis of variance was performed to detect main effect for group and condition. Special interest was given to group*condition interaction, since significant interaction would indicate that patients and healthy subjects performed differently throughout the three conditions.ResultsPatients were slower throughout all conditions compared to healthy subjects. With respect to the provoking condition, patients showed deteriorated performance compared to lying while healthy subjects' performance remained equal between these two conditions. Further analysis of patients' data showed that provocation was successful in 54% of the patients. Especially this group showed deteriorated performance in the provoking condition.ConclusionIt can be concluded that CLBP patients in general have worse motor task performance compared to healthy subjects and that provoking pain-related cognitions further worsened performance.

【 授权许可】

CC BY   
© Kusters et al; licensee BioMed Central Ltd. 2011