Antonio I Cuesta-Vargas1, Manuel González-Sánchez2. 1. IBIMA, Department of Physiotherapy, Faculty of Health Sciences, Andalucia Tech, University of Malaga, Malaga, Spain; School of Clinical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia. Electronic address: acuesta@uma.es. 2. IBIMA, Department of Physiotherapy, Faculty of Health Sciences, Andalucia Tech, University of Malaga, Malaga, Spain.
Abstract
OBJECTIVE: To analyze the ability to discriminate between healthy individuals and individuals with chronic nonspecific low back pain (CNLBP) by measuring the relation between patient-reported outcomes and objective clinical outcome measures of the erector spinae (ES) muscles using an ultrasound during maximal isometric lumbar extension. DESIGN: Cross-sectional study with screening and diagnostic tests with no blinded comparison. SETTING: University laboratory. PARTICIPANTS: Healthy individuals (n=33) and individuals with CNLBP (n=33). INTERVENTIONS: Each subject performed an isometric lumbar extension. With the variables measured, a discriminate analysis was performed using a value ≥ 6 in the Roland and Morris disability questionnaire (RMDQ) as the grouping variable. Then, a logistic regression with the functional and architectural variables was performed. A new index was obtained from each subject value input in the discriminate multivariate analysis. MAIN OUTCOME MEASURES: Morphologic muscle variables of the ES muscle were measured through ultrasound images. The reliability of the measures was calculated through intraclass correlation coefficients (ICCs). The relation between patient-reported outcomes and objective clinical outcome measures was analyzed using a discriminate function from standardized values of the variables and an analysis of the reliability of the ultrasound measurement. RESULTS: The reliability tests show an ICC value >.95 for morphologic and functional variables. The independent variables included in the analysis explained 42% (P=.003) of the dependent variable variance. CONCLUSIONS: The relation between objective variables (electromyography, thickness, pennation angle) and a subjective variable (RMDQ ≥ 6) and the capacity of this relation to identify CNLBP within a group of healthy subjects is moderate. These results should be considered by clinicians when treating this type of patient in clinical practice.
OBJECTIVE: To analyze the ability to discriminate between healthy individuals and individuals with chronic nonspecific low back pain (CNLBP) by measuring the relation between patient-reported outcomes and objective clinical outcome measures of the erector spinae (ES) muscles using an ultrasound during maximal isometric lumbar extension. DESIGN: Cross-sectional study with screening and diagnostic tests with no blinded comparison. SETTING: University laboratory. PARTICIPANTS: Healthy individuals (n=33) and individuals with CNLBP (n=33). INTERVENTIONS: Each subject performed an isometric lumbar extension. With the variables measured, a discriminate analysis was performed using a value ≥ 6 in the Roland and Morris disability questionnaire (RMDQ) as the grouping variable. Then, a logistic regression with the functional and architectural variables was performed. A new index was obtained from each subject value input in the discriminate multivariate analysis. MAIN OUTCOME MEASURES: Morphologic muscle variables of the ES muscle were measured through ultrasound images. The reliability of the measures was calculated through intraclass correlation coefficients (ICCs). The relation between patient-reported outcomes and objective clinical outcome measures was analyzed using a discriminate function from standardized values of the variables and an analysis of the reliability of the ultrasound measurement. RESULTS: The reliability tests show an ICC value >.95 for morphologic and functional variables. The independent variables included in the analysis explained 42% (P=.003) of the dependent variable variance. CONCLUSIONS: The relation between objective variables (electromyography, thickness, pennation angle) and a subjective variable (RMDQ ≥ 6) and the capacity of this relation to identify CNLBP within a group of healthy subjects is moderate. These results should be considered by clinicians when treating this type of patient in clinical practice.
Authors: Alberto J Pérez-Panero; María Ruiz-Muñoz; Raúl Fernández-Torres; Cynthia Formosa; Alfred Gatt; Manuel Gónzalez-Sánchez Journal: Qual Life Res Date: 2021-06-09 Impact factor: 4.147
Authors: Manuel González-Sánchez; Esther Velasco-Ramos; Maria Ruiz Muñoz; Antonio I Cuesta-Vargas Journal: J Foot Ankle Res Date: 2016-12-16 Impact factor: 2.303
Authors: María Del Mar Salinas-Asensio; Olga Ocón-Hernández; Antonio Mundo-López; Carolina Fernández-Lao; Francisco M Peinado; Carmen Padilla-Vinuesa; Francisco Álvarez-Salvago; Paula Postigo-Martín; Mario Lozano-Lozano; Ana Lara-Ramos; Manuel Arroyo-Morales; Irene Cantarero-Villanueva; Francisco Artacho-Cordón Journal: Int J Environ Res Public Health Date: 2022-02-02 Impact factor: 3.390