Tags

Type your tag names separated by a space and hit enter

Is head-on-trunk extension a proprioceptive mediator of postural control and sit-to-stand movement characteristics?
J Mot Behav. 2011; 43(6):491-8.JM

Abstract

During stance, head extension increases postural sway, possibly due to interference with sensory feedback. The sit-to-stand movement is potentially destabilizing due to the development of momentum as the trunk flexes forward and the body transitions to a smaller base of support. It is unclear what role head orientation plays in the postural and movement characteristics of the sit-to-stand transition. The authors assessed how moving from sitting to standing with head-on-trunk extension compared with moving with the head neutral or flexed, or with moving with the head facing forward in space (which would involve head-on-trunk extension, but not head-in-space extension) in healthy, young participants. Head-on-trunk extension increased center of pressure variability, but decreased movement velocities, movement duration, and trunk flexion compared with flexed and neutral head-on-trunk orientations. Similarities in movement characteristics between head-on-trunk extension and the forward head-in-space orientation suggest that stabilizing the head in space does not fully counteract the postural and movement changes due to head-on-trunk extension. Findings suggest that proprioceptive feedback from the neck muscles contributes to the regulation of posture and movement, and therefore should not be overlooked in research on the role of sensory feedback in postural control.

Links

Publisher Full Text

Authors+Show Affiliations

Johnson MB
Program in Physical Therapy, Washington University School of Medicine, St. Louis, Missouri, USA.
Van Emmerik RE
No affiliation info available

MeSH

AdultBiomechanical PhenomenaFemaleHeadHumansMaleMovementNeck MusclesPostureProprioception

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22122272

Citation

Johnson, Molly B., and Richard E A. Van Emmerik. "Is Head-on-trunk Extension a Proprioceptive Mediator of Postural Control and Sit-to-stand Movement Characteristics?" Journal of Motor Behavior, vol. 43, no. 6, 2011, pp. 491-8.
Johnson MB, Van Emmerik RE. Is head-on-trunk extension a proprioceptive mediator of postural control and sit-to-stand movement characteristics? J Mot Behav. 2011;43(6):491-8.
Johnson, M. B., & Van Emmerik, R. E. (2011). Is head-on-trunk extension a proprioceptive mediator of postural control and sit-to-stand movement characteristics? Journal of Motor Behavior, 43(6), 491-8. https://doi.org/10.1080/00222895.2011.631954
Johnson MB, Van Emmerik RE. Is Head-on-trunk Extension a Proprioceptive Mediator of Postural Control and Sit-to-stand Movement Characteristics. J Mot Behav. 2011;43(6):491-8. PubMed PMID: 22122272.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Is head-on-trunk extension a proprioceptive mediator of postural control and sit-to-stand movement characteristics? AU - Johnson,Molly B, AU - Van Emmerik,Richard E A, Y1 - 2011/11/28/ PY - 2011/11/30/entrez PY - 2011/11/30/pubmed PY - 2012/4/10/medline SP - 491 EP - 8 JF - Journal of motor behavior JO - J Mot Behav VL - 43 IS - 6 N2 - During stance, head extension increases postural sway, possibly due to interference with sensory feedback. The sit-to-stand movement is potentially destabilizing due to the development of momentum as the trunk flexes forward and the body transitions to a smaller base of support. It is unclear what role head orientation plays in the postural and movement characteristics of the sit-to-stand transition. The authors assessed how moving from sitting to standing with head-on-trunk extension compared with moving with the head neutral or flexed, or with moving with the head facing forward in space (which would involve head-on-trunk extension, but not head-in-space extension) in healthy, young participants. Head-on-trunk extension increased center of pressure variability, but decreased movement velocities, movement duration, and trunk flexion compared with flexed and neutral head-on-trunk orientations. Similarities in movement characteristics between head-on-trunk extension and the forward head-in-space orientation suggest that stabilizing the head in space does not fully counteract the postural and movement changes due to head-on-trunk extension. Findings suggest that proprioceptive feedback from the neck muscles contributes to the regulation of posture and movement, and therefore should not be overlooked in research on the role of sensory feedback in postural control. SN - 1940-1027 UR - https://www.unboundmedicine.com/medline/citation/22122272/Is_head_on_trunk_extension_a_proprioceptive_mediator_of_postural_control_and_sit_to_stand_movement_characteristics L2 - https://www.tandfonline.com/doi/full/10.1080/00222895.2011.631954 DB - PRIME DP - Unbound Medicine ER -