Posturography Comparison and Discriminant Analysis Between Individuals With and Without Chronic Low Back Pain

Jéssyca Fernandes Nogueira; Aline Cristina Carrasco; Alexandre Roberto M Pelegrinelli; Leandro Caetano Guenka; Mariana Felipe Silva; Laís Faganello Dela Bela; Josilainne Marcelino Dias; Felipe Arruda Moura; Joseph Gerard McVeigh; Jefferson Rosa Cardoso

doi:10.1016/j.jmpt.2019.01.002

Posturography Comparison and Discriminant Analysis Between Individuals With and Without Chronic Low Back Pain

J Manipulative Physiol Ther. 2020 Jun;43(5):469-475. doi: 10.1016/j.jmpt.2019.01.002. Epub 2020 Jul 24.

Affiliations

¹ Laboratory of Biomechanics and Clinical Epidemiology, PAIFIT Research Group, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
² Laboratory of Biomechanics and Clinical Epidemiology, PAIFIT Research Group, Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Laboratory of Applied Biomechanics, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
³ Laboratory of Applied Biomechanics, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
⁴ School of Clinical Therapies, College of Medicine and Health, University College Cork. Cork, Ireland.
⁵ Laboratory of Biomechanics and Clinical Epidemiology, PAIFIT Research Group, Universidade Estadual de Londrina, Londrina, Paraná, Brazil. Electronic address: jeffcar@uel.br.

PMID: 32718710
DOI: 10.1016/j.jmpt.2019.01.002

Abstract

Objective: The aims of this study were to evaluate the center of pressure (CoP) in individuals with chronic low back pain (LBP) compared with matched controls and perform discriminant analysis to detect which CoP variables differentiate the groups.

Methods: Thirty-two participants with LBP and 33 matched controls were evaluated on a force plate in a bipedal static position for 30 seconds in 2 conditions: eyes open (EO) and eyes closed (EC). Two discriminant analyzes were performed to detect which CoP variables could discriminate between groups.

Results: Those with LBP had higher values (ie, poorer balance) for most variables compared with the control group. With EO, total displacement of sway (TDS) was as follows: LBP group (median [25%-75%]) 31.77 (26.39-41.79) cm, control group 27.21 (22.29-31.78) cm, P = .008 and area: LBP group 3.31 (2.33-4.68) cm², control group 1.77 (1.3-2.71) cm². With EC, TDS was as follows: LBP group 49.6 (39.65-68.15) cm, control group 38.77 (30.36; 45.65) cm, P = .003 and area: LBP group 4.68 (2.6-7.28) cm², control group 2.4 (2.1-3.34) cm². The discriminating variables in the EO condition were the TDS for the LBP group and the anteroposterior mean velocity for the control group, while in the EC condition they were mediolateral dispersion and area for the LBP group.

Conclusion: Individuals with chronic LBP had worse postural control performance than matched controls, and it is possible to characterize those with and without LBP with CoP variables.

Keywords: Discriminant Analysis; Low Back Pain; Postural Balance.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adult
Case-Control Studies
Diagnosis, Computer-Assisted
Discriminant Analysis
Female
Humans
Low Back Pain / diagnostic imaging*
Low Back Pain / physiopathology
Male
Middle Aged
Postural Balance / physiology*
Severity of Illness Index*
Technology Assessment, Biomedical