Human sensitivity to whole-body vibration in urban transportation systems a literature review

1973 ◽  
Vol 28 (4) ◽  
pp. 785 ◽  
2009 ◽  
Vol 124 (7) ◽  
pp. 796-798 ◽  
Author(s):  
I Amir ◽  
E Young ◽  
A Belloso

AbstractObjective:We describe a case of benign paroxysmal positional vertigo which occurred after use of a whole-body vibration training plate.Method:Case report and literature review concerning the secondary causes of benign paroxysmal positional vertigo and the physiological effects of whole-body vibration training plates.Results:A 44-year-old woman was referred with classic symptoms of benign paroxysmal positional vertigo following use of a whole-body vibration training plate, a popular form of fitness equipment widely used in sports, rehabilitation and beauty treatments. The condition resolved spontaneously after several days. There have been reports of negative side effects in users of this equipment, such as dizziness, headache and a sensation of imbalance; however, there have been no reported cases involving vertigo. Based on a literature review, this equipment may cause side effects, including vertigo, by generating forces that can increase the original amplitude of internal organs, which may potentially cause labyrinthine trauma or dislocation of otoconia, leading to benign paroxysmal positional vertigo.Conclusions:We suggest that whole-body vibration training plates may potentially induce benign paroxysmal positional vertigo. Manufacturers may need to make users of this equipment aware of this risk, and remind them to use it with caution.


Work ◽  
2018 ◽  
Vol 59 (4) ◽  
pp. 571-583 ◽  
Author(s):  
Mohd Mukhtar Alam ◽  
Abid Ali Khan ◽  
Mohd Farooq

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Daniel Collado-Mateo ◽  
Jose C. Adsuar ◽  
Pedro R. Olivares ◽  
Borja del Pozo-Cruz ◽  
Jose A. Parraca ◽  
...  

Objective. To review the literature on the effects of whole-body vibration therapy in patients with fibromyalgia.Design. Systematic literature review.Patients. Patients with fibromyalgia.Methods. An electronic search of the literature in four medical databases was performed to identify studies on whole-body vibration therapy that were published up to the 15th of January 2015.Results. Eight articles satisfied the inclusion and exclusion criteria and were analysed. According to the Dutch CBO guidelines, all selected trials had a B level of evidence. The main outcomes that were measured were balance, fatigue, disability index, health-related quality of life, and pain. Whole-body vibration appeared to improve the outcomes, especially balance and disability index.Conclusion. Whole-body vibration could be an adequate treatment for fibromyalgia as a main therapy or added to a physical exercise programme as it could improve balance, disability index, health-related quality of life, fatigue, and pain. However, this conclusion must be treated with caution because the paucity of trials and the marked differences between existing trials in terms of protocol, intervention, and measurement tools hampered the comparison of the trials.


Author(s):  
M. F. Aladdin ◽  
N. A. A. Jalil ◽  
N. Y. Guan ◽  
K. A. M. Rezali ◽  
S. A. Adam

Exposure to noise and whole-body vibration (WBV) has been a key element in determining comfort levels in transportation systems. In the automotive industry, researchers and engineers continuously work on reducing noise and vibration levels to minimize discomfort. Noise annoyance in vehicles results from structure-borne as well as air-borne noise from vehicle powertrain, tires and aeroacoustics. Whole-body vibration affects vehicle passenger comfort at the seat pan, back rest and feet. The objective of this research is to evaluate the comfort level of seated passengers in a vehicle from noise and whole-body vibration by considering both separate and combined modality. The noise and vibration data were recorded and analysed in two vehicles on the same highway road with four different speeds. The vibration exposure in vehicle were evaluated based on ISO2631-1:1997. Noise exposure was based on A-weighted sound pressure level. The combined discomfort on noise and vibration were quantified. The vibration results identified clear dominant of z-axis vertical vibration on seat pan, backrest and feet in both vehicles. The discomfort of combined noise and vibration showed that vehicle B caused a higher discomfort level at the high vehicle speed of 90 km/h and 110 km/h. The Relative Discomfort Indicator (RDI) were introduced to compare levels of discomfort from noise and vibration in different vehicles with varying speeds. The result suggests that the RDI value for vehicle A relative to vehicle B is negative at higher vehicle speed which further indicates that at higher speed, vehicle B have a higher discomfort level compared to vehicle A. The RDI value is expected to be useful for automotive Noise, vibration and harshness (NVH) improvement.


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