Publicación: ¿Es menos lesivo tensar los músculos ante un posible frenado de emergencia?
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2022
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Atribución-NoComercial-SinDerivadas 4.0 Internacional
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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['Universidad Nacional de Educación a Distancia (España)', 'Universidad Politécnica de Madrid. Departamento de Ingeniería Mecánica']
Resumen
Este trabajo analiza el comportamiento muscular cervical ante un frenado de emergencia dependiendo de si el ocupante es consciente o no del frenado con antelación. Dieciocho voluntarios participaron en dos ensayos de frenado: en uno no conocían el instante de frenado manteniendo los músculos relajados, mientras que en el otro eran advertidos del frenado tensando el cuello previamente. Para evaluar el comportamiento muscular se utilizó electromiografía de superficie sobre los músculos trapecio y esternocleidomastoideo. Se observó que la edad y el género son características más significativas cuando los pasajeros son advertidos del frenado, especialmente durante el post-frenado. Esta fase es particularmente preocupante cuando los sujetos están relajados. Por otro lado, los jóvenes logran una mayor actividad muscular cuando son conscientes del evento, logrando una mayor estabilidad corporal durante el frenado. Mientras que cuando se desconoce el momento del frenado, conforme aumenta la edad, existe un mayor riesgo cervical.
This work analyzes cervical muscle behavior during emergency braking depending on whether the occupant is aware of the braking in advance. Eighteen volunteers participated in two braking tests: in one, they were unaware of the instant of braking while keeping their muscles relaxed, while in the other, they were warned of braking by tensing their neck beforehand. Surface electromyography of the trapezius and sternocleidomastoid muscles was used to evaluate muscle behavior. It was observed that age and gender are more significant characteristics when passengers are warned of braking, especially during post-braking. This phase is of particular concern when subjects are relaxed. On the other hand, young people achieve greater muscle activity when they are aware of the event, achieving greater body stability during braking. While when the moment of braking is unknown, as age increases, there is a greater cervical risk.
This work analyzes cervical muscle behavior during emergency braking depending on whether the occupant is aware of the braking in advance. Eighteen volunteers participated in two braking tests: in one, they were unaware of the instant of braking while keeping their muscles relaxed, while in the other, they were warned of braking by tensing their neck beforehand. Surface electromyography of the trapezius and sternocleidomastoid muscles was used to evaluate muscle behavior. It was observed that age and gender are more significant characteristics when passengers are warned of braking, especially during post-braking. This phase is of particular concern when subjects are relaxed. On the other hand, young people achieve greater muscle activity when they are aware of the event, achieving greater body stability during braking. While when the moment of braking is unknown, as age increases, there is a greater cervical risk.
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Categorías UNESCO
Palabras clave
seguridad víal, frenado autónomo, lesión cervical, electromiografía
Citación
Centro
Facultades y escuelas::E.T.S. de Ingenieros Industriales
Departamento
Mecánica