Effects of surface electrical stimulation on the muscle-tendon junction of spastic gastrocnemius in stroke patients

S. C. Chen, Y. L. Chen, C. J. Chen, C. H. Lai, W. H. Chiang, W. L. Chen

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Purpose: The purpose of this study was to explore the effects of spasticity suppression by surface electrical stimulation (ES) on the muscle-tendon junction of spastic gastrocnemius muscles in stroke. Methods: Twenty-four neurologically stable stroke patients (aged 41-69 years, 12-35 months post-stroke), with spasticity graded 2 or 3 on the modified Ashworth scale, were recruited and divided into two groups. In the ES group, each patient received 20 min of surface ES once daily, 6 days per week for 1 month. In the control group, ES was used with stimulation intensity kept at zero. To evaluate the therapeutic effect, the modified Ashworth scale, Fmax/Mmax ratio, H-reflex latency, H-reflex recovery curve, and the 10-m walking time were tested before and after the 1-month treatment. Results: In the ES group, the modified Ashworth Scale showed a trend toward reduced spasticity after 1 month of treatment. The Fmax/Mmax ratio decreased from 8.10% ± 4.84% to 4.00% ± 1.36%; the H-reflex latency increased from 28.87 ± 2.45 ms to 29.40 ± 2.57 ms; the H-reflex recovery curves indicated a downward shift; and the 10-metre walking time significantly decreased after ES. In the control group, none of the measures showed a statistically significant change. Conclusions: In the study, we demonstrated a way to suppress spasticity at a metameric site and to increase walking speed effectively by applying surface ES on the muscle-tendon junction of spastic gastrocnemius muscles.

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalDisability and Rehabilitation
Volume27
Issue number3
DOIs
Publication statusPublished - Feb 4 2005
Externally publishedYes

Fingerprint

Muscle Spasticity
Tendons
Electric Stimulation
H-Reflex
Stroke
Muscles
Walking
Skeletal Muscle
Control Groups
Therapeutic Uses
Therapeutics

ASJC Scopus subject areas

  • Rehabilitation
  • Health Professions(all)

Cite this

Effects of surface electrical stimulation on the muscle-tendon junction of spastic gastrocnemius in stroke patients. / Chen, S. C.; Chen, Y. L.; Chen, C. J.; Lai, C. H.; Chiang, W. H.; Chen, W. L.

In: Disability and Rehabilitation, Vol. 27, No. 3, 04.02.2005, p. 105-110.

Research output: Contribution to journalArticle

@article{434d73f23bdb48e7a30826a8cb56876a,
title = "Effects of surface electrical stimulation on the muscle-tendon junction of spastic gastrocnemius in stroke patients",
abstract = "Purpose: The purpose of this study was to explore the effects of spasticity suppression by surface electrical stimulation (ES) on the muscle-tendon junction of spastic gastrocnemius muscles in stroke. Methods: Twenty-four neurologically stable stroke patients (aged 41-69 years, 12-35 months post-stroke), with spasticity graded 2 or 3 on the modified Ashworth scale, were recruited and divided into two groups. In the ES group, each patient received 20 min of surface ES once daily, 6 days per week for 1 month. In the control group, ES was used with stimulation intensity kept at zero. To evaluate the therapeutic effect, the modified Ashworth scale, Fmax/Mmax ratio, H-reflex latency, H-reflex recovery curve, and the 10-m walking time were tested before and after the 1-month treatment. Results: In the ES group, the modified Ashworth Scale showed a trend toward reduced spasticity after 1 month of treatment. The Fmax/Mmax ratio decreased from 8.10{\%} ± 4.84{\%} to 4.00{\%} ± 1.36{\%}; the H-reflex latency increased from 28.87 ± 2.45 ms to 29.40 ± 2.57 ms; the H-reflex recovery curves indicated a downward shift; and the 10-metre walking time significantly decreased after ES. In the control group, none of the measures showed a statistically significant change. Conclusions: In the study, we demonstrated a way to suppress spasticity at a metameric site and to increase walking speed effectively by applying surface ES on the muscle-tendon junction of spastic gastrocnemius muscles.",
author = "Chen, {S. C.} and Chen, {Y. L.} and Chen, {C. J.} and Lai, {C. H.} and Chiang, {W. H.} and Chen, {W. L.}",
year = "2005",
month = "2",
day = "4",
doi = "10.1080/09638280400009022",
language = "English",
volume = "27",
pages = "105--110",
journal = "Disability and Rehabilitation",
issn = "0963-8288",
publisher = "Informa Healthcare",
number = "3",

}

TY - JOUR

T1 - Effects of surface electrical stimulation on the muscle-tendon junction of spastic gastrocnemius in stroke patients

AU - Chen, S. C.

AU - Chen, Y. L.

AU - Chen, C. J.

AU - Lai, C. H.

AU - Chiang, W. H.

AU - Chen, W. L.

PY - 2005/2/4

Y1 - 2005/2/4

N2 - Purpose: The purpose of this study was to explore the effects of spasticity suppression by surface electrical stimulation (ES) on the muscle-tendon junction of spastic gastrocnemius muscles in stroke. Methods: Twenty-four neurologically stable stroke patients (aged 41-69 years, 12-35 months post-stroke), with spasticity graded 2 or 3 on the modified Ashworth scale, were recruited and divided into two groups. In the ES group, each patient received 20 min of surface ES once daily, 6 days per week for 1 month. In the control group, ES was used with stimulation intensity kept at zero. To evaluate the therapeutic effect, the modified Ashworth scale, Fmax/Mmax ratio, H-reflex latency, H-reflex recovery curve, and the 10-m walking time were tested before and after the 1-month treatment. Results: In the ES group, the modified Ashworth Scale showed a trend toward reduced spasticity after 1 month of treatment. The Fmax/Mmax ratio decreased from 8.10% ± 4.84% to 4.00% ± 1.36%; the H-reflex latency increased from 28.87 ± 2.45 ms to 29.40 ± 2.57 ms; the H-reflex recovery curves indicated a downward shift; and the 10-metre walking time significantly decreased after ES. In the control group, none of the measures showed a statistically significant change. Conclusions: In the study, we demonstrated a way to suppress spasticity at a metameric site and to increase walking speed effectively by applying surface ES on the muscle-tendon junction of spastic gastrocnemius muscles.

AB - Purpose: The purpose of this study was to explore the effects of spasticity suppression by surface electrical stimulation (ES) on the muscle-tendon junction of spastic gastrocnemius muscles in stroke. Methods: Twenty-four neurologically stable stroke patients (aged 41-69 years, 12-35 months post-stroke), with spasticity graded 2 or 3 on the modified Ashworth scale, were recruited and divided into two groups. In the ES group, each patient received 20 min of surface ES once daily, 6 days per week for 1 month. In the control group, ES was used with stimulation intensity kept at zero. To evaluate the therapeutic effect, the modified Ashworth scale, Fmax/Mmax ratio, H-reflex latency, H-reflex recovery curve, and the 10-m walking time were tested before and after the 1-month treatment. Results: In the ES group, the modified Ashworth Scale showed a trend toward reduced spasticity after 1 month of treatment. The Fmax/Mmax ratio decreased from 8.10% ± 4.84% to 4.00% ± 1.36%; the H-reflex latency increased from 28.87 ± 2.45 ms to 29.40 ± 2.57 ms; the H-reflex recovery curves indicated a downward shift; and the 10-metre walking time significantly decreased after ES. In the control group, none of the measures showed a statistically significant change. Conclusions: In the study, we demonstrated a way to suppress spasticity at a metameric site and to increase walking speed effectively by applying surface ES on the muscle-tendon junction of spastic gastrocnemius muscles.

UR - http://www.scopus.com/inward/record.url?scp=15844368319&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=15844368319&partnerID=8YFLogxK

U2 - 10.1080/09638280400009022

DO - 10.1080/09638280400009022

M3 - Article

C2 - 15823991

AN - SCOPUS:15844368319

VL - 27

SP - 105

EP - 110

JO - Disability and Rehabilitation

JF - Disability and Rehabilitation

SN - 0963-8288

IS - 3

ER -