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Related Concept Videos

Indirect Motor Pathways01:22

Indirect Motor Pathways

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The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
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A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception
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Vibration-Induced Alteration in Trunk Extensor Muscle Proprioception as a Model for Impaired Trunk Control in Low

John R Gilliam1, Debdyuti Mandal2, Peemongkon Wattananon3

  • 1Applied Neuromechanics Lab, Department of Exercise Science, University of South Carolina, Columbia, SC 29208, USA.

Brain Sciences
|July 27, 2024
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Summary
This summary is machine-generated.

Personalizing muscle vibration parameters significantly altered position sense but had minimal impact on trunk control in healthy adults. This suggests vibration

Keywords:
back muscle vibrationchronic low back painproprioception

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Area of Science:

  • Biomechanics
  • Neuroscience
  • Rehabilitation Science

Background:

  • Altered trunk extensor muscle (TEM) proprioception is linked to impaired trunk control in chronic low back pain (cLBP).
  • Understanding the effects of proprioceptive manipulation on trunk control is crucial for developing effective rehabilitation strategies.

Purpose of the Study:

  • To investigate the impact of personalized muscle vibration on trunk control in healthy individuals.
  • To compare trunk control between healthy controls (HCs) and cLBP patients using equivalence testing.

Main Methods:

  • Personalized vibration parameters were determined using active joint reposition error (AJRE) testing in 20 HCs.
  • Trunk postural control was assessed on an unstable chair (eyes open/closed) with and without TEM vibration.
  • Trunk control was quantified using center-of-pressure measures and compared between HCs and 20 cLBP participants via equivalence testing.

Main Results:

  • Personalized vibration parameters induced larger lumbopelvic repositioning errors (d = 0.89) compared to non-personalized frequencies (d = 0.31-0.36).
  • In HCs, vision significantly influenced postural control (ηp² = 0.604-0.842), while TEM vibration showed no significant effects (p > 0.105) or interactions with vision (p > 0.423).
  • Between-group effect sizes (d = 0.32-0.51) indicated performance equivalence, suggesting TEM vibration did not degrade trunk control in HCs to the level observed in cLBP.

Conclusions:

  • Personalized muscle vibration effectively alters proprioception but has a limited effect on seated trunk postural control in individuals without back pain.
  • The findings suggest that TEM vibration alone is insufficient to replicate the trunk control deficits seen in cLBP patients.
  • Further research may explore combined interventions to address proprioceptive and motor control impairments in cLBP.