What is a “HIC Test?” (Head Injury Criterion) Impact Test
The “Head Injury Criterion” Test, or HIC Test, is the internationally recognized measure for the likelihood of head injury. The HIC impact test uses a Triax 2010 device that allows you to measure the force of a human head when it strikes a playing surface. By following the protocol established by the American Standard for Testing Materials for the F355-16 E-Missile we are able to determine the probability and severity of a head injury. The HIC Impact Test drops a 9.9 lb. hemisphere projectile (curved like a human head) from from increasing heights and measures the impact. The higher the Critical Fall Height, the better the surface. Good quality natural turf will produce a minimum Critical Fall Height of 1.7 Meters (see chart)
Triax 2010 Tester
This test simulates the force of a human head when it strikes a playing surface.
1 in 5Concussions involves the head hitting the surface.– Concussion Legacy Foundation
Critical Fall Height
QUALITY NATURAL-GRASS TURF HAS A CRITICAL FALL HEIGHT BETWEEN 1.7-2.2 METERS. BROCK IS THE ONLY SHOCK PAD SYSTEM THAT MEETS THIS STANDARD. DEMAND A HIC TEST FOR YOUR FIELDS!
Beyond The HIC Test: Testing for G-Max & Deformation
THESE ARE THE OTHER TWO MEASUREMENTS USED TO CHARACTERIZE SAFETY AND PERFORMANCE OF A SURFACE
This test method covers the measurement of certain shock-absorbing characteristics, like during body impacts. It’s applicable to natural and artificial playing surface systems. It does not correlate to head injury. It drops a 20 lb flat missile from 24”. GMax is a good measurement when used in conjunction with HIC above, but as a stand alone test is not a total measure of field safety.
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(FIRMNESS UNDER FOOT)
This test simulates the heel strike of an adult running athlete in stride. This is the softness or hardness under foot during play. A great natural grass field hits the “sweet spot” of being firm under foot while producing very low gmax and high Critical Fall Height. Which is why quality natural turf is the benchmark for quality artificial turf.
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When Artificial Turf Fields DO NOT Meet HIC Test Standards
Artificial turf fields that are not built for safety and performance lead to disastrous consequences for the children and athletes that play on such fields. The safety of the playing surface only degrades over time. A typical five-year-old artificial turf field installed over a stone base will produce a Critical Fall Height of only 1 meter and a GMax of around 165. An head impact of this magnitude results in a 93% chance of a minor head injury, a 62% chance of a moderate head injury, and a 22% chance of a major head injury.
A moderate head injury consists of a loss of consciousness, where a major head injury results in a skull fracture!
All are considered concussions.
REDUCE THE RELATIVE RISK OF HEAD INJURY
HIC: Turf over Rock / Turf over Brock / Natural Turf