Role of awareness in head-neck acceleration in low velocity rear-end impacts

Fourteen normal healthy seated and restrained young adults were delivered rear-end impacts of four intensities of acceleration. The chair was delivered a regulated and controlled pneumatic blow using a 30 cm cylinder to cause an acceleration of 0.5, 0.9, 1.1 and 1.4 g. The accelerated chair was stop...

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Bibliographic Details
Published in:Accident analysis and prevention 2000-03, Vol.32 (2), p.233-241
Main Authors: Kumar, Shrawan, Narayan, Yogesh, Amell, Tyler
Format: Article
Language:English
Subjects:
Acceleration
Accidents, Traffic - prevention & control
Accidents, Traffic - psychology
Adult
Awareness
Female
head
Head Movements
Humans
Impact
Male
neck
Rear-end collision
Sensory Deprivation
Whiplash
Whiplash Injuries - etiology
Whiplash Injuries - prevention & control
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Summary:Fourteen normal healthy seated and restrained young adults were delivered rear-end impacts of four intensities of acceleration. The chair was delivered a regulated and controlled pneumatic blow using a 30 cm cylinder to cause an acceleration of 0.5, 0.9, 1.1 and 1.4 g. The accelerated chair was stopped suddenly by impacting the stopper at the other end of the 2 m long friction reduced track. In one set of trials, subjects were informed about the impending impact and in the other they were blindfolded and provided with loud auditory input to eliminate cues of the impact. The accelerations of the chair, shoulder and head of the participating subjects were measured triaxially and compared between levels of acceleration and expectation. The multiple analyses of variance revealed that the peak acceleration was significantly affected by the gender ( P
ISSN:0001-4575
1879-2057
DOI:10.1016/S0001-4575(99)00114-1