Tags

Type your tag names separated by a space and hit enter

Sensorimotor function of the cervical spine in healthy volunteers.
Clin Biomech (Bristol, Avon). 2015 Mar; 30(3):260-8.CB

Abstract

BACKGROUND

Sensorimotor mechanisms are important for controlling head motion. However, relatively little is known about sensorimotor function in the cervical spine. This study investigated how age, gender and variations in the test conditions affect measures of position sense, movement sense and reflex activation in cervical muscles.

METHODS

Forty healthy volunteers (19M/21F, aged 19-59 years) participated. Position sense was assessed by determining repositioning errors in upright and flexed neck postures during tests performed in 25%, 50% and 75% cervical flexion. Movement sense was assessed by detecting thresholds to passive flexion and extension at velocities between 1 and 25°s(-1). Reflexes were assessed by determining the latency and amplitude of reflex activation in trapezius and sternocleidomastoid muscles. Reliability was evaluated from intraclass correlation coefficients.

FINDINGS

Mean repositioning errors ranged from 1.5° to 2.6°, were greater in flexed than upright postures (P=0.006) and in people aged over 25 years (P=0.05). Time to detect head motion decreased with increasing velocity (P<0.001) and was lower during flexion than extension movements (P=0.002). Reflexes demonstrated shorter latency (P<0.001) and greater amplitude (P=0.009) in trapezius compared to sternocleidomastoid, and became slower and weaker with age. None of the measures were influenced by gender. Reliability was good for movement sense measures, but was influenced by the test conditions when assessing position sense.

INTERPRETATION

Increased repositioning errors and slower reflexes in older subjects suggest that sensorimotor function in the cervical spine becomes impaired with age. In position sense tests, reliability was influenced by the test conditions with mid-range flexion movements, performed in standing, providing the most reliable measurements.

Authors+Show Affiliations

Centre for Comparative and Clinical Anatomy, University of Bristol, Bristol, UK.Centre for Comparative and Clinical Anatomy, University of Bristol, Bristol, UK.Centre for Comparative and Clinical Anatomy, University of Bristol, Bristol, UK. Electronic address: Trish.Dolan@bris.ac.uk.

Pub Type(s)

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

Language

eng

PubMed ID

25686675

Citation

Artz, Neil J., et al. "Sensorimotor Function of the Cervical Spine in Healthy Volunteers." Clinical Biomechanics (Bristol, Avon), vol. 30, no. 3, 2015, pp. 260-8.
Artz NJ, Adams MA, Dolan P. Sensorimotor function of the cervical spine in healthy volunteers. Clin Biomech (Bristol, Avon). 2015;30(3):260-8.
Artz, N. J., Adams, M. A., & Dolan, P. (2015). Sensorimotor function of the cervical spine in healthy volunteers. Clinical Biomechanics (Bristol, Avon), 30(3), 260-8. https://doi.org/10.1016/j.clinbiomech.2015.01.005
Artz NJ, Adams MA, Dolan P. Sensorimotor Function of the Cervical Spine in Healthy Volunteers. Clin Biomech (Bristol, Avon). 2015;30(3):260-8. PubMed PMID: 25686675.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sensorimotor function of the cervical spine in healthy volunteers. AU - Artz,Neil J, AU - Adams,Michael A, AU - Dolan,Patricia, Y1 - 2015/01/28/ PY - 2013/05/07/received PY - 2015/01/21/revised PY - 2015/01/21/accepted PY - 2015/2/18/entrez PY - 2015/2/18/pubmed PY - 2015/12/15/medline KW - Cervical spine KW - Movement sense KW - Neck muscles KW - Position sense KW - Proprioception KW - Reflex activation SP - 260 EP - 8 JF - Clinical biomechanics (Bristol, Avon) JO - Clin Biomech (Bristol, Avon) VL - 30 IS - 3 N2 - BACKGROUND: Sensorimotor mechanisms are important for controlling head motion. However, relatively little is known about sensorimotor function in the cervical spine. This study investigated how age, gender and variations in the test conditions affect measures of position sense, movement sense and reflex activation in cervical muscles. METHODS: Forty healthy volunteers (19M/21F, aged 19-59 years) participated. Position sense was assessed by determining repositioning errors in upright and flexed neck postures during tests performed in 25%, 50% and 75% cervical flexion. Movement sense was assessed by detecting thresholds to passive flexion and extension at velocities between 1 and 25°s(-1). Reflexes were assessed by determining the latency and amplitude of reflex activation in trapezius and sternocleidomastoid muscles. Reliability was evaluated from intraclass correlation coefficients. FINDINGS: Mean repositioning errors ranged from 1.5° to 2.6°, were greater in flexed than upright postures (P=0.006) and in people aged over 25 years (P=0.05). Time to detect head motion decreased with increasing velocity (P<0.001) and was lower during flexion than extension movements (P=0.002). Reflexes demonstrated shorter latency (P<0.001) and greater amplitude (P=0.009) in trapezius compared to sternocleidomastoid, and became slower and weaker with age. None of the measures were influenced by gender. Reliability was good for movement sense measures, but was influenced by the test conditions when assessing position sense. INTERPRETATION: Increased repositioning errors and slower reflexes in older subjects suggest that sensorimotor function in the cervical spine becomes impaired with age. In position sense tests, reliability was influenced by the test conditions with mid-range flexion movements, performed in standing, providing the most reliable measurements. SN - 1879-1271 UR - https://www.unboundmedicine.com/medline/citation/25686675/Sensorimotor_function_of_the_cervical_spine_in_healthy_volunteers_ DB - PRIME DP - Unbound Medicine ER -