title: Resting-State Functional Connectivity of the Sensorimotor Network in Individuals with Nonspecific Low Back Pain and the Association with the Sit-to-Stand-to-Sit Task.
abstract: Individuals with nonspecific low back pain (NSLBP) show a decreased sit-to-stand-to-sit (STSTS) performance. This dynamic sensorimotor task requires integration of sensory and motor information in the brain. Therefore, a better understanding of the underlying central mechanisms of impaired sensorimotor performance and the presence of NSLBP is needed. The aims of this study were to characterize differences in sensorimotor functional connectivity in individuals with NSLBP and to investigate whether the patterns of sensorimotor functional connectivity underlie the impaired STSTS performance. Seventeen individuals with NSLBP and 17 healthy controls were instructed to perform five consecutive STSTS movements as fast as possible. Based on the center of pressure displacement, the total duration of the STSTS task was determined. In addition, resting-state functional connectivity images were acquired and analyzed on a multivariate level using both functional connectivity density mapping and independent component analysis. Individuals with NSLBP needed significantly more time to perform the STSTS task compared to healthy controls. In addition, decreased resting-state functional connectivity of brain areas related to the integration of sensory and/or motor information was shown in the individuals with NSLBP. Moreover, the decreased functional connectivity at rest of the left precentral gyrus and lobule IV and V of the left cerebellum was associated with a longer duration of the STSTS task in both individuals with NSLBP and healthy controls. In summary, individuals with NSLBP showed a reorganization of the sensorimotor network at rest, and the functional connectivity of specific sensorimotor areas was associated with the performance of a dynamic sensorimotor task.
authors.affiliation: 1 Department of Rehabilitation Sciences, KU Leuven-University of Leuven , Leuven, Belgium .
authors.forename: Madelon
authors.initials: M
authors.lastname: Pijnenburg
authors.affiliation: 1 Department of Rehabilitation Sciences, KU Leuven-University of Leuven , Leuven, Belgium .
authors.forename: Simon
authors.initials: S
authors.lastname: Brumagne
authors.affiliation: 2 Department of Physical Therapy and Motor Rehabilitation, University of Ghent , Ghent, Belgium .|3 Department of Movement and Sports Sciences, University of Ghent , Ghent, Belgium .
authors.forename: Karen
authors.initials: K
authors.lastname: Caeyenberghs
authors.affiliation: 1 Department of Rehabilitation Sciences, KU Leuven-University of Leuven , Leuven, Belgium .
authors.forename: Lotte
authors.initials: L
authors.lastname: Janssens
authors.affiliation: 1 Department of Rehabilitation Sciences, KU Leuven-University of Leuven , Leuven, Belgium .
authors.forename: Nina
authors.initials: N
authors.lastname: Goossens
authors.affiliation: 4 Department of Data Analysis, University of Ghent , Ghent, Belgium .
authors.forename: Daniele
authors.initials: D
authors.lastname: Marinazzo
authors.affiliation: 5 Department of Kinesiology, KU Leuven-University of Leuven , Leuven, Belgium .
authors.forename: Stephan P
authors.initials: SP
authors.lastname: Swinnen
authors.affiliation: 6 Department of Rehabilitation Sciences, KU Leuven-University of Leuven , Leuven, Belgium .
authors.forename: Kurt
authors.initials: K
authors.lastname: Claeys
authors.affiliation: 4 Department of Data Analysis, University of Ghent , Ghent, Belgium .
authors.forename: Roma
authors.initials: R
authors.lastname: Siugzdaite
mesh_terms: D000328:Adult; D001931:Brain Mapping; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D017116:Low Back Pain / Q000473:pathology* / Q000503:physiopathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology; D009415:Nerve Net / Q000098:blood supply / Q000503:physiopathology; D009434:Neural Pathways / Q000098:blood supply / Q000503:physiopathology*; D010100:Oxygen / Q000097:blood; D025341:Principal Component Analysis; D012146:Rest; D066191:Sensorimotor Cortex / Q000098:blood supply / Q000503:physiopathology*; D055815:Young Adult
chemical_list: D010100:Oxygen
keywords: brain connectivity; central nervous system; functional connectivity density mapping; independent component analysis; postural control; resting-state functional magnetic resonance imaging; sensorimotor control