G-force limits for head and neck (UNCLASSIFIED)

[Gutekunst, David J Mr Usariem]

Classification: UNCLASSIFIED
Caveats: NONE

This question is on behalf of a colleague who is planning a new research
study:

"I am writing a research protocol on the response of the neck and head
to unexpected accelerations/decelerations. In order to get the study
approved, I must be able to state that the subjects will not be in
danger of injury. I thought about specifying that we will stay within
the acceleration limits for amusement park rides, but I have not been
able to find such limits. Does anyone have a reference that describes
safe limits for amusement park rides, or other relevant limits? I
understand that the criteria may be in terms of the first derivative of
acceleration (jerk) or the second derivative of acceleration (snap)."

Any help would be greatly appreciated.

Thanks.

-Dave


David J. Gutekunst, M.S.
Research Physiologist
Military Performance Division
U.S. Army Research Institute of Environmental Medicine
Natick, MA, USA 01760-5007
Phone: 508.233.4888
Fax: 508.233.4195
Email: david.gutekunst@na.amedd.army.mil
Classification: UNCLASSIFIED
Caveats: NONE