Fiabilidad relativa y absoluta del test de elevación progresiva de carga isoinercial en pacientes afectados por dolor de espalda bajo crónico no específico: un estudio test-retest de 12 semanas

Abstract

IntroductionChronic non-specific low back pain is an increasingly prevalent ailment. This ailment affects functional capacity and quality of life of individuals who have this condition. The aim of this study was to determine relative and absolute test-retest reliability of the protocol for the evaluation of the progressive isoinertial lifting test as a functional capacity function method. Material and methodsThe sample consisted of 10 patients with chronic non-specific low back pain referred from a hospital unit specialized in pain patients who underwent the standardized protocol of the progressive isoinertial lifting test on two occasions separated by a period of 12 weeks. The data analysis consisted of calculating relative reliability (intraclass correlation coefficients) and absolute (standard error of measurement and smallest real difference) indices and the representation of the data using the corresponding Bland-Altman plots. ResultsThe results obtained show high correlation coefficients and large absolute error rates for the test used both in men and women. ConclusionThe procedure used for determining the functional capacity by means of the progressive isoinertial lifting test shows high temporal consistence. Thus, it can be used as a method to assess functional capacity of patients with chronic non-specific low back pain enrolled in interventions of less than 12 weeks.