Abstract

Abstract Introduction: Pain is a multidimensional experience that considers the three axes of health: biological, psychological and social. When structural damage is not the essential cause of the pain experienced, as it happens in non-specific chronic low back pain (NSCL), it is necessary to consider the non-biological axes for an integral approach. Therefore, the objective of this study is to analyze the relationship between psychoemotional factors with pain intensity and functionality of persons with NSCL pain. Materials and Methods: The type of study is non-experimental, quantitative and correlational. The sample corresponds to n=55 users of the CESFAM Sergio Aguilar, of the Commune of Coquimbo and Juan Pablo II, of the Commune La Serena. Questionnaires were applied on psychoemotional factors: kinesophobia, catastrophism and self-efficacy, and the variables of limitation of the functionality and intensity of pain. With the instruments: Tampa Scale for kinesophobia (TSK 11), Pain catastrophism scale (PCS), selfefficacy perception questionnaire, Oswestry functionality scale and Analogous visual scale (EVA) respectively. Results: There was a relationship between the variables catastrophism - limitation of the functionality (rho=0,537, p<0,005), catastrophism - intensity of pain (rho=0,437, p=0,001), kinesophobia - limitation of the functionality (rho=0,418, p=0,002) and self-efficacylimitation of the functionality (rho = - 0,518, p<0,005), these correlations being statistically significant (p<0,005). Discussion: The three psychoemotional factors are related to functionality. However, only catastrophism is related to pain intensity. Therefore, it is relevant that the physical therapist considers these factors in his therapeutic intervention, in order to focus the subsequent kinesthetic approach with a multidisciplinary vision and interaction. Keywords: non-specific lumbar pain, chronic pain, psychological factors.