Quantitative evaluation of normal muscle tone

Fabrizio Pisano, Giacinta Miscio, Roberto Colombo, Paolo Pinelli

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Forty-eight normal subjects were evaluated for the purpose of objectively quantifying muscle tone, Flexor carpi radialis and extensor digitorum communis electromyographic (EMG) activity was simultaneously recorded during wrist movements imposed by a torque motor. Each session was subdivided into three steps: (1) measurement of the 'intrinsic stiffness index' (ISI) at 10°/s; (2) measurement of the 'total stiffness index' (TSI) at 500°/s; (3) evaluation of the stretch reflex threshold speed (SRTS). No stretch reflex (SR) was found in about half of the subjects, even at the highest speed. ISI was higher in males (p <0.001); significant differences in TSI were found between subjects with SR and those without (p <0.02); no statistical differences in SRTS were found for either age or gender. ISI, TSI and SRTS, appear to be reliable indices of the range of normal muscle tone for its quantitative assessment.

Original languageEnglish
Pages (from-to)168-172
Number of pages5
JournalJournal of the Neurological Sciences
Volume135
Issue number2
DOIs
Publication statusPublished - Feb 1996

Fingerprint

Stretch Reflex
Muscles
Torque
Wrist
Reference Values

Keywords

  • Biomechanical device
  • EMG
  • Muscle tone
  • Shortening reaction
  • Stiffness
  • Stretch reflex

ASJC Scopus subject areas

  • Ageing
  • Clinical Neurology
  • Surgery
  • Developmental Neuroscience
  • Neurology
  • Neuroscience(all)

Cite this

Quantitative evaluation of normal muscle tone. / Pisano, Fabrizio; Miscio, Giacinta; Colombo, Roberto; Pinelli, Paolo.

In: Journal of the Neurological Sciences, Vol. 135, No. 2, 02.1996, p. 168-172.

Research output: Contribution to journalArticle

Pisano, Fabrizio ; Miscio, Giacinta ; Colombo, Roberto ; Pinelli, Paolo. / Quantitative evaluation of normal muscle tone. In: Journal of the Neurological Sciences. 1996 ; Vol. 135, No. 2. pp. 168-172.
@article{109f2cb7277944408787ed3c1b211b7a,
title = "Quantitative evaluation of normal muscle tone",
abstract = "Forty-eight normal subjects were evaluated for the purpose of objectively quantifying muscle tone, Flexor carpi radialis and extensor digitorum communis electromyographic (EMG) activity was simultaneously recorded during wrist movements imposed by a torque motor. Each session was subdivided into three steps: (1) measurement of the 'intrinsic stiffness index' (ISI) at 10°/s; (2) measurement of the 'total stiffness index' (TSI) at 500°/s; (3) evaluation of the stretch reflex threshold speed (SRTS). No stretch reflex (SR) was found in about half of the subjects, even at the highest speed. ISI was higher in males (p <0.001); significant differences in TSI were found between subjects with SR and those without (p <0.02); no statistical differences in SRTS were found for either age or gender. ISI, TSI and SRTS, appear to be reliable indices of the range of normal muscle tone for its quantitative assessment.",
keywords = "Biomechanical device, EMG, Muscle tone, Shortening reaction, Stiffness, Stretch reflex",
author = "Fabrizio Pisano and Giacinta Miscio and Roberto Colombo and Paolo Pinelli",
year = "1996",
month = "2",
doi = "10.1016/0022-510X(95)00291-9",
language = "English",
volume = "135",
pages = "168--172",
journal = "Journal of the Neurological Sciences",
issn = "0022-510X",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Quantitative evaluation of normal muscle tone

AU - Pisano, Fabrizio

AU - Miscio, Giacinta

AU - Colombo, Roberto

AU - Pinelli, Paolo

PY - 1996/2

Y1 - 1996/2

N2 - Forty-eight normal subjects were evaluated for the purpose of objectively quantifying muscle tone, Flexor carpi radialis and extensor digitorum communis electromyographic (EMG) activity was simultaneously recorded during wrist movements imposed by a torque motor. Each session was subdivided into three steps: (1) measurement of the 'intrinsic stiffness index' (ISI) at 10°/s; (2) measurement of the 'total stiffness index' (TSI) at 500°/s; (3) evaluation of the stretch reflex threshold speed (SRTS). No stretch reflex (SR) was found in about half of the subjects, even at the highest speed. ISI was higher in males (p <0.001); significant differences in TSI were found between subjects with SR and those without (p <0.02); no statistical differences in SRTS were found for either age or gender. ISI, TSI and SRTS, appear to be reliable indices of the range of normal muscle tone for its quantitative assessment.

AB - Forty-eight normal subjects were evaluated for the purpose of objectively quantifying muscle tone, Flexor carpi radialis and extensor digitorum communis electromyographic (EMG) activity was simultaneously recorded during wrist movements imposed by a torque motor. Each session was subdivided into three steps: (1) measurement of the 'intrinsic stiffness index' (ISI) at 10°/s; (2) measurement of the 'total stiffness index' (TSI) at 500°/s; (3) evaluation of the stretch reflex threshold speed (SRTS). No stretch reflex (SR) was found in about half of the subjects, even at the highest speed. ISI was higher in males (p <0.001); significant differences in TSI were found between subjects with SR and those without (p <0.02); no statistical differences in SRTS were found for either age or gender. ISI, TSI and SRTS, appear to be reliable indices of the range of normal muscle tone for its quantitative assessment.

KW - Biomechanical device

KW - EMG

KW - Muscle tone

KW - Shortening reaction

KW - Stiffness

KW - Stretch reflex

UR - http://www.scopus.com/inward/record.url?scp=0030047411&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030047411&partnerID=8YFLogxK

U2 - 10.1016/0022-510X(95)00291-9

DO - 10.1016/0022-510X(95)00291-9

M3 - Article

VL - 135

SP - 168

EP - 172

JO - Journal of the Neurological Sciences

JF - Journal of the Neurological Sciences

SN - 0022-510X

IS - 2

ER -