Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Medicine and Health Sciences
Identifying The Neural Correlates Of Anticipatory Postural Control: A Novel Fmri Paradigm, Jo Armour Smith, Rongwen Tain, Kelli G. Sharp, Laura M. Glynn, Linda R. Van Dillen, Korinne Henslee, Jesse V. Jacobs, Steven C. Cramer
Identifying The Neural Correlates Of Anticipatory Postural Control: A Novel Fmri Paradigm, Jo Armour Smith, Rongwen Tain, Kelli G. Sharp, Laura M. Glynn, Linda R. Van Dillen, Korinne Henslee, Jesse V. Jacobs, Steven C. Cramer
Physical Therapy Faculty Articles and Research
Altered postural control in the trunk/hip musculature is a characteristic of multiple neurological and musculoskeletal conditions. Previously it was not possible to determine if altered cortical and subcortical sensorimotor brain activation underlies impairments in postural control. This study used a novel fMRI-compatible paradigm to identify the brain activation associated with postural control in the trunk and hip musculature. BOLD fMRI imaging was conducted as participants performed two versions of a lower limb task involving lifting the left leg to touch the foot to a target. For the supported leg raise (SLR) the leg is raised from the knee while the …
Task-Invariance And Reliability Of Anticipatory Postural Adjustments In Healthy Young Adults, Jo Armour Smith, Niklas König Ignasiak, Jesse V. Jacobs
Task-Invariance And Reliability Of Anticipatory Postural Adjustments In Healthy Young Adults, Jo Armour Smith, Niklas König Ignasiak, Jesse V. Jacobs
Physical Therapy Faculty Articles and Research
Background
Anticipatory postural adjustments (APAs) occur in the trunk during tasks such as rapid limb movement and are impaired in individuals with musculoskeletal and neurological dysfunction. To understand APA impairment, it is important to first determine if APAs can be measured reliably and which characteristics of APAs are task-invariant.
Research question
What is the test-retest reliability of latency, amplitude and muscle activation patterns (synergies) of trunk APAs during arm-raise and leg-raise tasks, and to what extent are these APA characteristics invariant across tasks at the individual and group levels?
Methods
15 young adults (mean age: 23.7 (±3.2) years) performed six …
Trunk-Pelvis Coordination During Turning: A Cross Sectional Study Of Young Adults With And Without A History Of Low Back Pain, Jo Armour Smith, Kornelia Kulig
Trunk-Pelvis Coordination During Turning: A Cross Sectional Study Of Young Adults With And Without A History Of Low Back Pain, Jo Armour Smith, Kornelia Kulig
Physical Therapy Faculty Articles and Research
Background
During steady-state locomotion, symptomatic individuals with low back pain demonstrate reduced ability to modulate coordination between the trunk and the pelvis in the axial plane. It is unclear if this is also true during functional locomotor perturbations such as changing direction, or if this change in coordination adaptability persists between symptomatic episodes. The purpose of this study was to compare trunk-pelvis coordination during walking turns in healthy individuals and asymptomatic individuals with a history of low back pain.
Methods
Participants performed multiple ipsilateral turns. Axial plane inter-segmental coordination and stride-to-stride coordination variability were quantified using the vector coding technique. …