SciELO - Scientific Electronic Library Online

 
vol.29 número3The implementation of the Neuroid in the Gate Control System leads to new ideas about pain processingElectromagnetic interference reduction by dynamic impedance balancing applied to biosensors índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Revista Brasileira de Engenharia Biomédica

versión ISSN 1517-3151

Resumen

MUNOZ, Ingrid Solange Sepúlveda et al. Effect of laser vs LED in the near infrared region on the skeletal muscle activity: clinical study. Rev. Bras. Eng. Bioméd. [online]. 2013, vol.29, n.3, pp.262-268. ISSN 1517-3151.  http://dx.doi.org/10.4322/rbeb.2013.023.

INTRODUCTION: Studies have demonstrated the effectiveness of the infrared laser (IR) on the skelet al muscle activity. However, it was not found studies on the effects of radiation emitted by IR LED (Light Emitting Diode) on the activity of masseter muscle (MM, important muscle of mastication), the aim of the present study. METHODS: Ten volunteers were involved and their electromyography (muscle activity, strength and fatigue time) and blood lactate levels (mmol/L) were analyzed after placebo, laser (GaAlAs, 780 nm) and LED (GaAlAs, 880 nm) therapies. The signals obtained previously conducted before the therapies were taken as control. The irradiation parameters (laser or LED) were: output power of 0.02 W, energy density of 4 J/cm2 and beam area of 0.2 cm2. Eight points on the MM were irradiated in a perpendicular and transcutaneous form with a 1-cm distance between the points. RESULTS: Muscle activity was significantly higher after laser and LED therapies when compared to control. No significant differences were found in force, fatigue time and blood lactate levels after placebo therapy, laser or LED, when compared to control. CONCLUSION: The results suggest the optimization of muscle activity with the use of laser or LED therapy, without causing side effects such as the increase in the force and levels of lactate.

Palabras clave : Masseter muscle activity; Muscle fatigue; Muscle force; Lactate; Laser; LED.

        · resumen en Portugués     · texto en Portugués     · Portugués ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons