Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Use of instrumented mouthguards to record head kinematics during roller coaster rides. (A) Mouthguard, (B) linear acceleration of the head during the entire duration of a roller coaster ride, and (C) comparison of roller coaster accelerations with running and soccer heading.
