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 language | English |
|---|---|
| Pages (from-to) | 168-172 |
| Number of pages | 5 |
| Journal | Journal of the Neurological Sciences |
| Volume | 135 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 1996 |
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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 journal › Article
}
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
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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 -