ACCELERATION PERTURBATIONS OF DAILY LIVING - A COMPARISON TO WHIPLASH

被引:54
作者
ALLEN, ME [1 ]
WEIRJONES, I [1 ]
MOTIUK, DR [1 ]
FLEWIN, KR [1 ]
GORING, RD [1 ]
KOBETITCH, R [1 ]
BROADHURST, A [1 ]
机构
[1] SIMON FRASER UNIV,BURNABY V5A 1S6,BC,CANADA
关键词
ACCELERATION; CHANGE OF VELOCITY; EQUIVALENT BARRIER SPEED; GRAVITATION; PERTURBATIONS; WHIPLASH;
D O I
10.1097/00007632-199405310-00017
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Study Design. This study measured repeated human head accelerations (g) during daily activities. Objectives. Perturbations of daily living were compared to similar data from low velocity rear-end motor vehicle accidents. Summary of Background Data. Past assumptions suggest that motor vehicle accident severity does not correlate with the degree of sustained injury. Early engineering studies indicated that occupant disturbance in a low velocity motor vehicle accident is minor. Methods. Eight volunteers were perturbed with 13 daily activities. Helmets on the heads of volunteers were instrumented with tri-planar accelerometers with output sampling of 500 Hz, sensitivity of 0.02 g, and a range of +/- 20 g. Results. There was wide inter-subject response for various perturbations. Plopping backward into a chair caused maximum peak acceleration horizontally at 5.6 g and vertically at 8.5 g, with force vector of 10.1 g at 54.9-degrees. Mean impulse duration was 0.19 sec. There was no hint of injury in any subject. Conclusions. Perturbations of daily living compared similarly to the jostling expected in low velocity ''whip-lash''-type motor vehicle accidents.
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收藏
页码:1285 / 1290
页数:6
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