Wide-pulse-high-frequency neuromuscular electrical stimulation in cerebral palsy.
Clin Neurophysiol
; 127(2): 1530-1539, 2016 Feb.
Article
en En
| MEDLINE
| ID: mdl-26232132
ABSTRACT
OBJECTIVE:
The present study assesses whether wide-pulse-high-frequency (WPHF) neuromuscular electrical stimulation (NMES) could result in extra-force production in cerebral palsy (CP) patients as previously observed in healthy individuals.METHODS:
Ten CP and 10 age- and sex-matched control participants underwent plantar flexors NMES. Two to three 10-s WPHF (frequency 100 Hz, pulse duration 1 ms) and conventional (CONV, frequency 25 Hz, pulse duration 50 µs) trains as well as two to three burst-like stimulation trains (2s at 25 Hz, 2s at 100 Hz, 2s at 25 Hz; pulse duration 1 ms) were evoked. Resting soleus and gastrocnemii maximal H-reflex amplitude (Hmax) was normalized by maximal M-wave amplitude (Mmax) to quantify α-motoneuron modulation.RESULTS:
Similar Hmax/Mmax ratio was found in CP and control participants. Extra-force generation was observed both in CP (+18 ± 74%) and control individuals (+94 ± 124%) during WPHF (p<0.05). Similar extra-forces were found during burst-like stimulations in both groups (+108 ± 110% in CP and +65 ± 85% in controls, p>0.05).CONCLUSION:
Although the mechanisms underlying extra-force production may differ between WPHF and burst-like NMES, similar increases were observed in patients with CP and healthy controls.SIGNIFICANCE:
Development of extra-forces in response to WPHF NMES evoked at low stimulation intensity might open new possibilities in neuromuscular rehabilitation.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Parálisis Cerebral
/
Electromiografía
/
Contracción Muscular
/
Unión Neuromuscular
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Clin Neurophysiol
Asunto de la revista:
NEUROLOGIA
/
PSICOFISIOLOGIA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Suiza