. Author manuscript; available in PMC: 2021 Oct 6.

Published in final edited form as: Proc Inst Mech Eng P J Sport Eng Technol. 2020 Aug 20;235(1):62–69. doi: 10.1177/1754337120949061

Table 2.

Summary of laboratory impact tests mapped to on-field data.

	Location	SI	PRA (rad/s²)	Percentile
Speed	Front Boss	230 ± 11	4790 ± 334	98.9
	Rear	199 ± 10	3195 ± 191	95.5
	Rear Boss	138 ± 10	4403 ± 302	99.1
	Side	182 ± 11	5030 ± 318	100
SpeedFlex	Front Boss	164 ± 5	4227 ± 340	100
	Rear	209 ± 13	3425 ± 229	91.1
	Rear Boss	109 ± 6	4174 ± 149	97.6
	Side	178 ± 16	5547 ± 224	98.5

Nearly all of the impact configurations were among the top 3% of head impacts experienced by youth football players. SI: Severity Index; PRA: Peak Rotational Acceleration.