[en] Background. Low-back pain is one of the main causes of disability and sick leave worldwide today. In people with this pathology, proprioceptive deficits have been identified and it has been suggested that they may be associated with causes and mechanisms of low back pain. The literature shows significant differences in proprioception in CLD versus SS, however, most authors agree that there are many limitations that prevent confirming these conclusions. Objetive. The main objective of this study is to verify if there are significant differences in the proprioception of the lumbar region between subjects with chronic lumbar pain and healthy controls; also verifying the interobserver reliability for the joint repositioning test between novice and expert physiotherapists. Methods. Pilot study of cases and controls, in which the active repositioning precision test (AJRS towards flexion and towards extension) and the tactile discrimination test between two points in the lumbar region (TPDT) were measured. Questionnaires on disability for pain, risk of poor prognosis, mental health, level of physical activity and fear-avoidance beliefs were passed to better characterize the sample. Outcomes. Twenty-four subjects participated, 11 cases with chronic low back pain and 13 controls. The mean values of repositioning error (ER) towards flexion were higher in the cases than in the controls towards both flexion and extension, but without significant differences. There were no significant differences between the two study groups in the tactile discrimination test between two points. The reliability of the AJRS test for both flexion and extension between novices, between experts and between novels and experts is weak to moderate. Conclusions. It has been observed that subjects with pain have worse precision in lumbar repositioning and in tactile discrimination sensitivity between two points. While the difference between cases and controls has not been significant, these results are in line with the literature in that patients with low-back pain have a significant deterioration of proprioception at the lumbar level compared with healthy subjects.

[gl] Introdución. A dor lumbar é unha das principais causas de discapacidade e baixa laboral a nivel mundial na actualidade. En persoas con esta patoloxía, identificáronse déficits propioceptivos e suxeriuse que poden estar asociados con causas e mecanismos de dor lumbar. A literatura amosa diferencias significativas na propiocepción en DLC fronte a SS, sen embargo, a maioría de autores están dacordo en que existen moitas limitacións que impiden confirmar estas conclusións. Obxectivo. O obxectivo principal deste estudo é comprobar si existen diferencias significativas na propiocepción da rexión lumbar entre suxeitos con dor lumbar crónica e controis sans; comprobando, ademais, a fiabilidade interobservador para o test de reposicionamento articular entre fisioterapeutas noveis e expertos. Material e método. Estudo piloto de casos e controis, nos que se mediron o test de precisión no reposicionamento activo (AJRS á flexión e á extensión) e test de discriminación táctil entre dous puntos na rexión lumbar (TPDT). Pasáronse cuestionarios de incapacidade por dor, risco de mal prognóstico, saúde mental, nivel de actividade física e crenzas de medo-evitación para caracterizar mellor a mostra. Resultados. Participaron 24 suxeitos, 11 casos con dor lumbar crónica e 13 controis. Os valores medios do erro de reposicionamento (ER) hacia a flexión foron maiores nos casos que nos controis tanto hacia a flexión como hacia a extensión, pero sen diferenzas significativas. No test de discriminación tátil entre dous puntos non houbo diferenzas significativas entre os dous grupos de estudo. A fiabilidade do test AJRS tanto á flexión como á extensión entre nóveis, entre expertos e entre nóveis e expertos é de débil a moderada. Conclusións. Observouse que os suxeitos con dor teñen peor precisión no reposicionamento lumbar e na sensibilidade de discriminación táctil entre dous puntos. Si ben, a diferenza entre casos e controis non resultou significativa, estes resultados están en liña coa literatura en canto a que os suxeitos con dor lumbar teñen un deterioro significativo da propiocepción a nivel lumbar en comparación con suxeitos sans.