Fatigue reduction during aggregated and distributed sequential stimulation.
Muscle Nerve
; 56(2): 271-281, 2017 08.
Article
en En
| MEDLINE
| ID: mdl-27862023
ABSTRACT
INTRODUCTION:
Transcutaneous neuromuscular electrical stimulation (NMES) can generate muscle contractions for rehabilitation and exercise. However, NMES-evoked contractions are limited by fatigue when they are delivered "conventionally" (CONV) using a single active electrode. Researchers have developed "sequential" (SEQ) stimulation, involving rotation of pulses between multiple "aggregated" (AGGR-SEQ) or "distributed" (DISTR-SEQ) active electrodes, to reduce fatigue (torque-decline) by reducing motor unit discharge rates. The primary objective was to compare fatigue-related outcomes, "potentiation," "variability," and "efficiency" between CONV, AGGR-SEQ, and DISTR-SEQ stimulation of knee extensors in healthy participants.METHODS:
Torque and current were recorded during testing with fatiguing trains using each NMES type under isometric and isokinetic (180°/s) conditions.RESULTS:
Compared with CONV stimulation, SEQ techniques reduced fatigue-related outcomes, increased potentiation, did not affect variability, and reduced efficiency.CONCLUSIONS:
SEQ techniques hold promise for reducing fatigue during NMES-based rehabilitation and exercise; however, optimization is required to improve efficiency. Muscle Nerve 56 271-281, 2017.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Estimulación Eléctrica Transcutánea del Nervio
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Fatiga
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Contracción Muscular
Límite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Muscle Nerve
Año:
2017
Tipo del documento:
Article
País de afiliación:
Canadá