Figure 2.
Photographs depicting (a) sensor array embedded inside a standard Riddell Speed Flex football helmet, and (b) orthogonal lines to categorize impact location.
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.