4th International Conference on Whole Body Vibration, Montreal, Kanada, 02 Temmuz 2009, ss.133-134
While travelling in a vehicle compared to semi-supine or seated postures persons may be
affected more in the supine posture by the vibrations transmitted to their bodies. Patients are
exposed to significantly high levels of whole-body vibrations during their transportations in an
ambulance. High velocities cause high magnitude forces that pose high physiological dynamic
hazards [1]. These result in discomfort and cause adverse affects on patients. The slope of the
upper part of the stretcher affects the body posture which in turn alters the body’s response to
vibration [2]. Studies show that the presence of backrest increases the resonance frequency of
the body [3]. The condition of the road surface or the road type and the speed of the vehicle
may further worsen the patient’s situation.