Nonconcussive Impacts | Concussion Legacy Foundation

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<style> .hero-secondary { background: linear-gradient(360deg, rgba(0, 0, 0, 0.7) 3.55%, rgba(0, 0, 0, 0) 45.3%), linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0) 26.61%), center url(https://concussionfoundation.org/wp-content/uploads/2024/08/ben-hershey-nu4h8sMqees-unsplash-min-e1722520286643.jpg); background-size: cover; } .hero-secondary:before { background-color: #001D41; opacity: 0.7; } </style> <section class="hero-secondary divider-on " style="background-color: #001d41"> <div class="page-container hero-secondary__page-container" data-aos="fade-up"> <div class="hero-secondary__label"> <span>Resource Center</span> </div> <div class="hero-secondary__title"> <h1><strong>Nonconcussive</strong> Impacts</h1> </div> <div class="hero-secondary__desc"> <p>The best available evidence suggests that nonconcussive impacts, not concussive impacts, are the driving force behind CTE.</p> </div> <div class="hero-secondary__btns"> <a class="btn btn--tertiary hero-secondary__btn" href="https://concussionfoundation.org/helpline/" target="_self" > CLF HELPLINE </a> </div> </div> <div class="shape-divider-wrap"> <style> .shape-divider-wrap:before { background-color: #E9EFF1; } </style> <svg class="shape-divider-wrap__arrow" width="60" height="60" viewBox="0 0 60 60" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="30" cy="30" r="30" fill="#E9EFF1"/> <circle cx="30.5" cy="29.5" r="22.5" fill="#001D41"/> <path d="M29.9697 38.4127C30.2626 38.7056 30.7374 38.7056 31.0303 38.4127L35.8033 33.6397C36.0962 33.3468 36.0962 32.8719 35.8033 32.5791C35.5104 32.2862 35.0355 32.2862 34.7426 32.5791L30.5 36.8217L26.2574 32.5791C25.9645 32.2862 25.4896 32.2862 25.1967 32.5791C24.9038 32.8719 24.9038 33.3468 25.1967 33.6397L29.9697 38.4127ZM29.75 22L29.75 37.8824L31.25 37.8824L31.25 22L29.75 22Z" fill="white"/> </svg> <div class="section-divider section-divider--additional"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z"></path> </svg> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#E9EFF1"></path> </svg> </div> </section> <section class="intro-primary divider-on " style='background-color:#E9EFF1'> <div class="page-container" > <div class="primary-list"> <div class="primary-list__item "> <div class="primary-list__media-block"> <div class="primary-list__image-wrap primary-list__image-wrap-2-1 "> <img width="1000" height="800" src="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Lacrosse.jpg" class="attachment-full size-full" alt="" decoding="async" fetchpriority="high" srcset="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Lacrosse.jpg 1000w, https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Lacrosse-300x240.jpg 300w, https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Lacrosse-768x614.jpg 768w" sizes="(max-width: 1000px) 100vw, 1000px" /> <div class="primary-list__before-dec" data-speed="0.001" data-parallax='{"y" : 30, "smoothness": 30}'> </div> </div> </div> <div class="primary-list__text-block" data-aos="fade-up"> <div class="primary-list__desc " > <h2><strong>The driving force behind Chronic Traumatic Encephalopathy (CTE)</strong></h2> <p>Many people are surprised to hear that there have been cases of CTE discovered in athletes who have never been diagnosed with a concussion. This revelation has spurred some scientists to look at other types of brain trauma as a possible cause of CTE.</p> <p>Currently, the best available evidence suggests that nonconcussive impacts, not concussive impacts, are the driving force behind CTE. In fact, the odds of developing CTE seem most related to the number and strength of head impacts experienced over a lifetime.</p> </div> </div> <div class="micromodal" id="video-modal-2-1" aria-hidden="true"> <div class="micromodal__overlay" tabindex="-1"> <div class="micromodal__container" role="dialog" aria-modal="true" aria-labelledby="video-modal-2-1-title" > <div class="micromodal__content"> <svg class="micromodal__close" data-micromodal-close width="25" height="25" viewBox="0 0 25 25" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M13.9342 12.494L24.7034 1.72066C24.8934 1.52984 25 1.27155 24.9998 1.00236C24.9996 0.733175 24.8927 0.475029 24.7024 0.284466C24.3217 -0.0941846 23.651 -0.0960967 23.2664 0.286378L12.5 11.0597L1.72983 0.283509C1.34713 -0.0941845 0.676448 -0.0922723 0.29566 0.285422C0.201144 0.379504 0.126324 0.491458 0.0755652 0.61475C0.0248066 0.738041 -0.000873638 0.870202 2.26789e-05 1.00352C2.26789e-05 1.27508 0.105266 1.52942 0.29566 1.71779L11.0649 12.4931L0.296616 23.2693C0.106591 23.4604 0.000174843 23.719 0.000712933 23.9885C0.00125102 24.2579 0.1087 24.5161 0.299487 24.7064C0.48414 24.8891 0.745334 24.9943 1.01514 24.9943H1.02088C1.29164 24.9933 1.55283 24.8872 1.73366 24.7026L12.5 13.9293L23.2702 24.7055C23.4606 24.8948 23.7151 25 23.9849 25C24.1183 25.0004 24.2505 24.9744 24.3738 24.9235C24.4971 24.8727 24.6092 24.798 24.7035 24.7037C24.7979 24.6094 24.8726 24.4974 24.9235 24.3742C24.9744 24.2509 25.0004 24.1188 25 23.9855C25 23.7149 24.8948 23.4596 24.7034 23.2712L13.9342 12.494Z" fill="white"/> </svg> <div class="micromodal__inner"> <div class="micromodal__inner-content"> <div class="video-box"> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#001D41"></path> </svg> </div> </section> <section class="text-variations divider-on " style='background-color:#001D41'> <div class="page-container text-variations__container " data-aos="fade-up"> <div class="title title--dark title--center-al text-variations__title w725 dark-bg"> <h2><strong>What is a nonconcussive impact?</strong></h2> </div> <div class="desc-simple text-variations__desc w725 dark-bg "> <p>A nonconcussive impact is simply a hit to the head that does not result in a diagnosed concussion. A <a href="https://concussionfoundation.org/concussion-resources/what-is-concussion/">concussion</a> is a type of traumatic brain injury that results in signs that are observable (loss of consciousness, loss of balance, disorientation) or symptoms that are felt (headache, dizziness, double vision, amnesia, feeling foggy). Most head impacts do not cause signs or symptoms of concussion, and therefore are nonconcussive.</p> <p>Examples of these types of impacts include most tackles and collisions on the football field; headers in soccer; checks or collisions with the boards or other players in ice hockey; and body checks in lacrosse.</p> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#E9EFF1"></path> </svg> </div> </section> <section class="intro-primary divider-on " style='background-color:#E9EFF1'> <div class="page-container" > <div class="primary-list"> <div class="primary-list__item reverse multiply"> <div class="primary-list__media-block"> <div class="primary-list__image-wrap primary-list__image-wrap-4-1 "> <img width="666" height="716" src="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Soccer-Header-2-e1723491773264.jpg" class="attachment-full size-full" alt="" decoding="async" srcset="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Soccer-Header-2-e1723491773264.jpg 666w, https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Soccer-Header-2-e1723491773264-279x300.jpg 279w" sizes="(max-width: 666px) 100vw, 666px" /> <div class="primary-list__before-dec" data-speed="0.001" data-parallax='{"y" : 30, "smoothness": 30}'> </div> </div> </div> <div class="primary-list__text-block" data-aos="fade-up"> <div class="primary-list__desc " > <h2><strong>Do nonconcussive impacts damage the brain?</strong></h2> <p>Yes, scientific evidence suggests some nonconcussive impacts cause subclinical traumatic brain injury (TBI). A subclinical TBI does not cause classic concussion signs or symptoms, but can cause changes to brain biomarkers, imaging, or function.</p> <p>Think of it this way: the human brain has around 86 billion neurons – what are the odds that you’d feel one neuron being injured? We don’t know how many neurons need to be injured to result in signs or symptoms – or where in the brain neurons need to be injured to result in specific symptoms.</p> <p>You can think of CTE like an overuse injury. Baseball pitchers who throw too much eventually might need “Tommy John surgery” due to all the microtrauma that leads to wear and tear on a ligament in their elbow. They never had a big injury to the elbow, but it wore out all the same.</p> <p>CTE may be occurring the same way – it’s not a single injury that causes the disease, but instead accumulation of microtrauma from thousands of hits over years. The big difference is that we’ll never have a surgery that will fix your brain, so it’s important to try to prevent CTE by limiting exposure to head impacts – just like pitch counts in baseball help prevent elbow injuries.</p> </div> </div> <div class="micromodal" id="video-modal-4-1" aria-hidden="true"> <div class="micromodal__overlay" tabindex="-1"> <div class="micromodal__container" role="dialog" aria-modal="true" aria-labelledby="video-modal-4-1-title" > <div class="micromodal__content"> <svg class="micromodal__close" data-micromodal-close width="25" height="25" viewBox="0 0 25 25" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M13.9342 12.494L24.7034 1.72066C24.8934 1.52984 25 1.27155 24.9998 1.00236C24.9996 0.733175 24.8927 0.475029 24.7024 0.284466C24.3217 -0.0941846 23.651 -0.0960967 23.2664 0.286378L12.5 11.0597L1.72983 0.283509C1.34713 -0.0941845 0.676448 -0.0922723 0.29566 0.285422C0.201144 0.379504 0.126324 0.491458 0.0755652 0.61475C0.0248066 0.738041 -0.000873638 0.870202 2.26789e-05 1.00352C2.26789e-05 1.27508 0.105266 1.52942 0.29566 1.71779L11.0649 12.4931L0.296616 23.2693C0.106591 23.4604 0.000174843 23.719 0.000712933 23.9885C0.00125102 24.2579 0.1087 24.5161 0.299487 24.7064C0.48414 24.8891 0.745334 24.9943 1.01514 24.9943H1.02088C1.29164 24.9933 1.55283 24.8872 1.73366 24.7026L12.5 13.9293L23.2702 24.7055C23.4606 24.8948 23.7151 25 23.9849 25C24.1183 25.0004 24.2505 24.9744 24.3738 24.9235C24.4971 24.8727 24.6092 24.798 24.7035 24.7037C24.7979 24.6094 24.8726 24.4974 24.9235 24.3742C24.9744 24.2509 25.0004 24.1188 25 23.9855C25 23.7149 24.8948 23.4596 24.7034 23.2712L13.9342 12.494Z" fill="white"/> </svg> <div class="micromodal__inner"> <div class="micromodal__inner-content"> <div class="video-box"> </div> </div> </div> </div> </div> </div> </div> </div> <div class="primary-list__item multiply"> <div class="primary-list__media-block"> <div class="primary-list__image-wrap primary-list__image-wrap-4-2 "> <img width="5432" height="3621" src="https://concussionfoundation.org/wp-content/uploads/2024/08/chris-chow-zVmuTzhmvXY-unsplash-min.jpg" class="attachment-full size-full" alt="" decoding="async" srcset="https://concussionfoundation.org/wp-content/uploads/2024/08/chris-chow-zVmuTzhmvXY-unsplash-min.jpg 5432w, https://concussionfoundation.org/wp-content/uploads/2024/08/chris-chow-zVmuTzhmvXY-unsplash-min-300x200.jpg 300w, https://concussionfoundation.org/wp-content/uploads/2024/08/chris-chow-zVmuTzhmvXY-unsplash-min-1024x683.jpg 1024w, https://concussionfoundation.org/wp-content/uploads/2024/08/chris-chow-zVmuTzhmvXY-unsplash-min-768x512.jpg 768w, https://concussionfoundation.org/wp-content/uploads/2024/08/chris-chow-zVmuTzhmvXY-unsplash-min-1536x1024.jpg 1536w, https://concussionfoundation.org/wp-content/uploads/2024/08/chris-chow-zVmuTzhmvXY-unsplash-min-2048x1365.jpg 2048w" sizes="(max-width: 5432px) 100vw, 5432px" /> <div class="primary-list__before-dec" data-speed="0.001" data-parallax='{"y" : 30, "smoothness": 30}'> </div> </div> </div> <div class="primary-list__text-block" data-aos="fade-up"> <div class="primary-list__desc " > <h2><strong>Are nonconcussive hits the same as subconcussive hits? </strong></h2> <p>We no longer use the term subconcussive because we believe it is misleading. The prefix sub- implies impacts less than concussion and has led to experts talking about the “repeated smaller head impacts” as a risk factor for CTE and other outcomes.</p> <p>But a new analysis of published data led by CLF neuroscientists has revealed that most concussions are not the hardest head impacts experience by athletes. Studies have shown that the average concussive impacts are around the 90th percentile of acceleration experienced by an athlete over a season.</p> <p>To say it another way, if a football player experiences 1,000 head impacts in a season, and they are diagnosed with one concussion, they likely experience up to 100 nonconcussive impacts harder than the concussion. Football players are rarely diagnosed with a concussion every season, and one study of college football players showed that for every concussion experienced, a player experiences 340 head impacts of greater magnitude.</p> <p>This is why CLF encourages using the term nonconcussive rather than subconcussive. While “repeated smaller head impacts” are discouraged, we should really be focused on minimizing the “repeated bigger head impacts.”</p> </div> </div> <div class="micromodal" id="video-modal-4-2" aria-hidden="true"> <div class="micromodal__overlay" tabindex="-1"> <div class="micromodal__container" role="dialog" aria-modal="true" aria-labelledby="video-modal-4-2-title" > <div class="micromodal__content"> <svg class="micromodal__close" data-micromodal-close width="25" height="25" viewBox="0 0 25 25" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M13.9342 12.494L24.7034 1.72066C24.8934 1.52984 25 1.27155 24.9998 1.00236C24.9996 0.733175 24.8927 0.475029 24.7024 0.284466C24.3217 -0.0941846 23.651 -0.0960967 23.2664 0.286378L12.5 11.0597L1.72983 0.283509C1.34713 -0.0941845 0.676448 -0.0922723 0.29566 0.285422C0.201144 0.379504 0.126324 0.491458 0.0755652 0.61475C0.0248066 0.738041 -0.000873638 0.870202 2.26789e-05 1.00352C2.26789e-05 1.27508 0.105266 1.52942 0.29566 1.71779L11.0649 12.4931L0.296616 23.2693C0.106591 23.4604 0.000174843 23.719 0.000712933 23.9885C0.00125102 24.2579 0.1087 24.5161 0.299487 24.7064C0.48414 24.8891 0.745334 24.9943 1.01514 24.9943H1.02088C1.29164 24.9933 1.55283 24.8872 1.73366 24.7026L12.5 13.9293L23.2702 24.7055C23.4606 24.8948 23.7151 25 23.9849 25C24.1183 25.0004 24.2505 24.9744 24.3738 24.9235C24.4971 24.8727 24.6092 24.798 24.7035 24.7037C24.7979 24.6094 24.8726 24.4974 24.9235 24.3742C24.9744 24.2509 25.0004 24.1188 25 23.9855C25 23.7149 24.8948 23.4596 24.7034 23.2712L13.9342 12.494Z" fill="white"/> </svg> <div class="micromodal__inner"> <div class="micromodal__inner-content"> <div class="video-box"> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#001D41"></path> </svg> </div> </section> <section class="text-variations divider-on " style='background-color:#001D41'> <div class="page-container text-variations__container " data-aos="fade-up"> <div class="title title--dark title--center-al text-variations__title w725 dark-bg"> <h2><strong>How do we know nonconcussive impacts are dangerous?</strong></h2> </div> <div class="desc-simple text-variations__desc w725 dark-bg "> <p>In the last several years, research groups using helmet-mounted accelerometer devices have helped us understand how nonconcussive impacts add up to brain damage. This technology allows scientists to count how many hits an athlete takes over a period of time, how hard the hits are, and how much rest an athlete gets between hits. Scientists can use this information to compare athletes with lots of hits to athletes with fewer hits, or to people who haven’t been hit at all.</p> <p>Another benefit of this type of research is that it allows scientists to take out athletes who have had concussions, allowing them to focus only on the effects of nonconcussive impacts. By comparing athletes with lots of hits to athletes without hits, scientists can isolate the effect that hits have on a variety of different things, from an athlete’s memory and thinking ability to the strength of the physical connections in the brain. The picture is pretty clear: too many hits is not a good thing.</p> <p>Here’s what we’ve learned:</p> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#E9EFF1"></path> </svg> </div> </section> <div class="two-col-list-short-title-and-paragraph divider-on"> <div class="page-container" data-aos="fade-up"> <div class="two-col-list-t-p disable-last"> <div class="two-col-list-t-p__item"> <div class="two-col-list-t-p__left"> <div class="two-col-list-t-p__title"> <h2><strong>Nonconcussive head impacts are correlated with the presence and severity of CTE.</strong></h2> </div> </div> <div class="two-col-list-t-p__right"> <div class="two-col-list-t-p__desc desc-simple"> <p><a href="https://www.nature.com/articles/s41467-023-39183-0" target="_blank" rel="noopener">A study of 631 deceased football players</a> revealed that the odds of having CTE was related to the estimated number and strength of impacts to the head, but not related to the number of diagnosed, self-reported or family-estimated concussions.</p> </div> </div> </div> <div class="two-col-list-t-p__item"> <div class="two-col-list-t-p__left"> <div class="two-col-list-t-p__title"> <h2><strong>Nonconcussive hits hurt our memory and attention.</strong></h2> </div> </div> <div class="two-col-list-t-p__right"> <div class="two-col-list-t-p__desc desc-simple"> <p>Several studies have shown that athletes who suffer more nonconcussive impacts do worse on memory and attention tests than their teammates who suffer fewer hits.</p> </div> </div> </div> <div class="two-col-list-t-p__item"> <div class="two-col-list-t-p__left"> <div class="two-col-list-t-p__title"> <h2><strong>Nonconcussive hits damage the connections in our brain.</strong></h2> </div> </div> <div class="two-col-list-t-p__right"> <div class="two-col-list-t-p__desc desc-simple"> <p>Different areas of the brain are interconnected by bundles of wire-like brain cells, allowing them to seamlessly communicate. Using a technique called Diffusion Tensor Imaging (or DTI), scientists can see these connections, and measure their structural strength. Too many nonconcussive impacts can damage the structure of these wiry connections, making it harder for brain areas to communicate.</p> </div> </div> </div> <div class="two-col-list-t-p__item"> <div class="two-col-list-t-p__left"> <div class="two-col-list-t-p__title"> <h2><strong>Nonconcussive hits suppress brain function.</strong></h2> </div> </div> <div class="two-col-list-t-p__right"> <div class="two-col-list-t-p__desc desc-simple"> <p>Using a technique called functional magnetic resonance imaging, scientists can see how active different brain areas are during thinking or memory tasks. Studies in contact athletes have shown that athletes with more nonconcussive impacts have less brain activity than athletes with fewer impacts.</p> </div> </div> </div> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#001D41"></path> </svg> </div> </div> <section class="narrow-cta-or-sign-up-block narrow-cta-or-sign-up-block--type-signup-2 " > <div class="page-container"> <div class="narrow-cta-or-sign-up-block__signup-2-wrap narrow-cta-or-sign-up-block-signup-2-block" data-aos="fade-up"> <div class="narrow-cta-or-sign-up-block-signup-2-block__content-text"> <div class="narrow-cta-or-sign-up-block-signup-2-block__title"> <h2><strong>Sign up to stay informed</strong> on new research & treatments with the CTE Resources Newsletter</h2> </div> </div> <div class="narrow-cta-or-sign-up-block-signup-2-block__content-form"> <div class="narrow-cta-or-sign-up-block-signup-2-block__form"> <script type="text/javascript"></script> <div class='gf_browser_ie gf_browser_ie7 gform_wrapper gravity-theme gform-theme--no-framework form-sign-up_wrapper' data-form-theme='gravity-theme' data-form-index='0' id='gform_wrapper_24' > <div class='gform_heading'> <p class='gform_required_legend'>"<span class="gfield_required gfield_required_asterisk">*</span>" indicates required fields</p> </div><form method='post' enctype='multipart/form-data' id='gform_24' class='form-sign-up' action='/cte-resources/nonconcussive-impacts' data-formid='24' novalidate><div class='gf_invisible ginput_recaptchav3' data-sitekey='6Ld2VYAqAAAAABKW-yHIboRzpigXLY6GG4VCM4nT' data-tabindex='0'><input id="input_6355e9f8219e3236ccf116289a1460df" class="gfield_recaptcha_response" type="hidden" name="input_6355e9f8219e3236ccf116289a1460df" value=""/></div> <div class='gform-body gform_body'><div id='gform_fields_24' class='gform_fields top_label form_sublabel_below description_below validation_below'><div id="field_24_1" class="gfield gfield--type-email gfield--input-type-email gfield_contains_required field_sublabel_below gfield--no-description field_description_below hidden_label field_validation_below gfield_visibility_visible" data-js-reload="field_24_1" ><label class='gfield_label gform-field-label' for='input_24_1'>Email<span class="gfield_required"><span class="gfield_required gfield_required_asterisk">*</span></span></label><div class='ginput_container ginput_container_email'> <input name='input_1' id='input_24_1' type='email' value='' class='large' placeholder='Enter your email' aria-required="true" aria-invalid="false" /> </div></div></div></div> <div class='gform_footer top_label'> <input type='submit' id='gform_submit_button_24' class='gform_button button' value='Sign up' onclick='if(window["gf_submitting_24"]){return false;} if( !jQuery("#gform_24")[0].checkValidity || jQuery("#gform_24")[0].checkValidity()){window["gf_submitting_24"]=true;} ' onkeypress='if( event.keyCode == 13 ){ if(window["gf_submitting_24"]){return false;} if( !jQuery("#gform_24")[0].checkValidity || jQuery("#gform_24")[0].checkValidity()){window["gf_submitting_24"]=true;} jQuery("#gform_24").trigger("submit",[true]); 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background-size: cover; } .full-width-bg-txt-8:before { background-color: #001D41; opacity: 0.7; } </style> <section class="full-width-bg-txt full-width-bg-txt-8 centered" style=""> <div class="section-divider section-divider--top"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path fill="#001D41" d="M985.66,92.83C906.67,72,823.78,31,743.84,14.19c-82.26-17.34-168.06-16.33-250.45.39-57.84,11.73-114,31.07-172,41.86A600.21,600.21,0,0,1,0,27.35V120H1200V95.8C1132.19,118.92,1055.71,111.31,985.66,92.83Z"></path> </svg> </div> <div class="page-container full-width-bg-txt__page-container centered" data-aos="fade-up"> <div class="full-width-bg-txt__regular centered none"> <div class="title title--center-al centered full-width-bg-txt__title"> <h2><strong>How can we prevent<br /> nonconcussive hits?</strong></h2> </div> <div class="full-width-bg-txt__inner-content none"> <div class="full-width-bg-txt__desc-wrap none"> <div class="desc-simple"> <p>Limiting nonconcussive impacts is a great way to make sports safer. At the Concussion Legacy Foundation, we advocate for three pillars to reduce the number of nonconcussive impacts athletes are exposed to.</p> </div> </div> </div> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#fff"></path> </svg> </div> </section> <section class="ordered-blocks divider-on"> <div class="page-container"> <div class="order-block"> <div class="order-block__item"> <div class="order-block__inner-left"> <div class="order-block__image-wrap"> <img width="2048" height="2048" src="https://concussionfoundation.org/wp-content/uploads/2024/08/449792522_18359897929103145_2402299589142436284_n.jpg" class="attachment-full size-full" alt="" decoding="async" srcset="https://concussionfoundation.org/wp-content/uploads/2024/08/449792522_18359897929103145_2402299589142436284_n.jpg 2048w, https://concussionfoundation.org/wp-content/uploads/2024/08/449792522_18359897929103145_2402299589142436284_n-300x300.jpg 300w, https://concussionfoundation.org/wp-content/uploads/2024/08/449792522_18359897929103145_2402299589142436284_n-1024x1024.jpg 1024w, https://concussionfoundation.org/wp-content/uploads/2024/08/449792522_18359897929103145_2402299589142436284_n-150x150.jpg 150w, https://concussionfoundation.org/wp-content/uploads/2024/08/449792522_18359897929103145_2402299589142436284_n-768x768.jpg 768w, https://concussionfoundation.org/wp-content/uploads/2024/08/449792522_18359897929103145_2402299589142436284_n-1536x1536.jpg 1536w" sizes="(max-width: 2048px) 100vw, 2048px" /> <div class="order-block__count-box"> 01 </div> </div> </div> <div class="order-block__inner-right"> <div data-aos="fade-up"> <div class="order-block__main-title"> <h2><strong>Delay the introduction of contact (age-appropriate rules).</strong></h2> </div> <div class="order-block__main-desc desc-simple"> <p>Athletes who have longer careers in contact or collision sports suffer more nonconcussive impacts, and athletes who start earlier tend to have longer careers. By delaying the introduction of contact or collisions (through rule changes for youth divisions), we can limit the time an athlete has to accrue damage.</p> </div> </div> </div> </div> <div class="order-block__item"> <div class="order-block__inner-left"> <div class="order-block__image-wrap"> <img width="1000" height="667" src="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impact-Eliminate-Unnecessary-Contact.jpg" class="attachment-full size-full" alt="" decoding="async" srcset="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impact-Eliminate-Unnecessary-Contact.jpg 1000w, https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impact-Eliminate-Unnecessary-Contact-300x200.jpg 300w, https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impact-Eliminate-Unnecessary-Contact-768x512.jpg 768w" sizes="(max-width: 1000px) 100vw, 1000px" /> <div class="order-block__count-box"> 02 </div> </div> </div> <div class="order-block__inner-right"> <div data-aos="fade-up"> <div class="order-block__main-title"> <h2><strong>Eliminate contact where unnecessary.</strong></h2> </div> <div class="order-block__main-desc desc-simple"> <p>Research using Hit Counting devices has shown that in many sports, the majority of head impacts occur during practice. By altering drills and practice structure to eliminate contact when it is not completely necessary, we can chip away at the lion’s share of nonconcussive hits in sports without changing gameplay at all.</p> </div> </div> </div> </div> <div class="order-block__item"> <div class="order-block__inner-left"> <div class="order-block__image-wrap"> <img width="1000" height="667" src="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Modify-Contact.jpg" class="attachment-full size-full" alt="" decoding="async" srcset="https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Modify-Contact.jpg 1000w, https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Modify-Contact-300x200.jpg 300w, https://concussionfoundation.org/wp-content/uploads/2024/08/Nonconcussive-Impacts-Modify-Contact-768x512.jpg 768w" sizes="(max-width: 1000px) 100vw, 1000px" /> <div class="order-block__count-box"> 03 </div> </div> </div> <div class="order-block__inner-right"> <div data-aos="fade-up"> <div class="order-block__main-title"> <h2><strong>Modify contact where appropriate.</strong></h2> </div> <div class="order-block__main-desc desc-simple"> <p>Some practice contact is necessary for athletes in contact and collision sports to learn how to protect themselves and their opponents from serious injury. In these cases, limiting the repetitions to the minimum necessary to achieve particular learning points is a great way to prevent needless injury. A thoughtful approach to drills and practices can go a long way!</p> <p><a href="https://concussionfoundation.org/programs/education-advocacy/">Learn more about our education and advocacy programs</a> designed to prevent nonconcussive hits.</p> </div> </div> </div> </div> </div> </div> <div class="section-divider"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"> <path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="#E9EFF1"></path> </svg> </div> </section> <section class="three-tiles-w-related-block " style='background-color:#E9EFF1'> <div class="page-container" data-aos="fade-up"> <div class="title title--center-al title--dark three-tiles-w-related-block__title"> <h2><strong>You may also like</strong></h2> </div> <div class="tiles-w-related page-tile-grid-wrap"> <div class="page-tile-grid tiles-w-related__page-grid"> <div class="page-tile-grid__img-wrap"> <img width="1157" height="943" src="https://concussionfoundation.org/wp-content/uploads/2024/08/McKee-CTE.jpg" class="attachment-full size-full" alt="" decoding="async" srcset="https://concussionfoundation.org/wp-content/uploads/2024/08/McKee-CTE.jpg 1157w, https://concussionfoundation.org/wp-content/uploads/2024/08/McKee-CTE-300x245.jpg 300w, https://concussionfoundation.org/wp-content/uploads/2024/08/McKee-CTE-1024x835.jpg 1024w, https://concussionfoundation.org/wp-content/uploads/2024/08/McKee-CTE-768x626.jpg 768w" sizes="(max-width: 1157px) 100vw, 1157px" /> <span class="page-tile-grid__label" style="background-color: #1193D2"> Resource Center </span> <a href="https://concussionfoundation.org/cte-resources/what-is-cte/"></a> </div> <div class="page-tile-grid__body"> <div class="desc-simple"> <p>Learn about symptoms, risk factors, and what causes the neurodegenerative disease Chronic Traumatic Encephalopathy (CTE).</p> </div> <div class="page-tile-grid__btn-wrap"> <a class="btn btn--round" href="https://concussionfoundation.org/cte-resources/what-is-cte/" > <svg width="50" height="50" viewBox="0 0 50 50" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="25" cy="25" r="25" fill="#1193D2"/> <path d="M31.5303 25.5303C31.8232 25.2374 31.8232 24.7626 31.5303 24.4697L26.7574 19.6967C26.4645 19.4038 25.9896 19.4038 25.6967 19.6967C25.4038 19.9896 25.4038 20.4645 25.6967 20.7574L29.9393 25L25.6967 29.2426C25.4038 29.5355 25.4038 30.0104 25.6967 30.3033C25.9896 30.5962 26.4645 30.5962 26.7574 30.3033L31.5303 25.5303ZM19 25.75L31 25.75L31 24.25L19 24.25L19 25.75Z" fill="white"/> </svg> <div> <span>WHAT IS CTE?</span> </div> </a> </div> </div> </div> <div class="page-tile-grid tiles-w-related__page-grid"> <div class="page-tile-grid__img-wrap"> <img width="500" height="300" src="https://concussionfoundation.org/wp-content/uploads/2024/06/948079b9103c4ceeb77b3087b5e001fc.png" class="attachment-full size-full" alt="" decoding="async" srcset="https://concussionfoundation.org/wp-content/uploads/2024/06/948079b9103c4ceeb77b3087b5e001fc.png 500w, https://concussionfoundation.org/wp-content/uploads/2024/06/948079b9103c4ceeb77b3087b5e001fc-300x180.png 300w" sizes="(max-width: 500px) 100vw, 500px" /> <span class="page-tile-grid__label" style="background-color: #1193D2"> Resource Center </span> <a href="https://concussionfoundation.org/cte-resources/caregiving/"></a> </div> <div class="page-tile-grid__body"> <div class="desc-simple"> <p>Those struggling with suspected CTE aren’t the only ones who need support. View tools and resources for CTE caregivers.</p> </div> <div class="page-tile-grid__btn-wrap"> <a class="btn btn--round" href="https://concussionfoundation.org/cte-resources/caregiving/" > <svg width="50" height="50" viewBox="0 0 50 50" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="25" cy="25" r="25" fill="#1193D2"/> <path d="M31.5303 25.5303C31.8232 25.2374 31.8232 24.7626 31.5303 24.4697L26.7574 19.6967C26.4645 19.4038 25.9896 19.4038 25.6967 19.6967C25.4038 19.9896 25.4038 20.4645 25.6967 20.7574L29.9393 25L25.6967 29.2426C25.4038 29.5355 25.4038 30.0104 25.6967 30.3033C25.9896 30.5962 26.4645 30.5962 26.7574 30.3033L31.5303 25.5303ZM19 25.75L31 25.75L31 24.25L19 24.25L19 25.75Z" fill="white"/> </svg> <div> <span>CAREGIVING FOR CTE</span> </div> </a> </div> </div> </div> <div class="cta-tile-box tiles-w-related__cta-tile-box"> <p class="cta-tile-box__title"> Related </p> <div class="cta-tile-box__list"> <div class="cta-tile-box__list-item"> <a class="cta-tile-box__list-link" href="https://concussionfoundation.org/cte-resources/support/" target="_self"> <svg width="21" height="21" viewBox="0 0 21 21" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="10.5" cy="10.5" r="10.5" fill="#1193D2"/> <path d="M15.3536 11.3536C15.5488 11.1583 15.5488 10.8417 15.3536 10.6464L12.1716 7.46447C11.9763 7.2692 11.6597 7.2692 11.4645 7.46447C11.2692 7.65973 11.2692 7.97631 11.4645 8.17157L14.2929 11L11.4645 13.8284C11.2692 14.0237 11.2692 14.3403 11.4645 14.5355C11.6597 14.7308 11.9763 14.7308 12.1716 14.5355L15.3536 11.3536ZM5 11.5L15 11.5L15 10.5L5 10.5L5 11.5Z" fill="white"/> </svg> <span>CTE Support & Resources</span> </a> </div> <div class="cta-tile-box__list-item"> <a class="cta-tile-box__list-link" href="https://concussionfoundation.org/clf-email-preferences/" target="_self"> <svg width="21" height="21" viewBox="0 0 21 21" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="10.5" cy="10.5" r="10.5" fill="#1193D2"/> <path d="M15.3536 11.3536C15.5488 11.1583 15.5488 10.8417 15.3536 10.6464L12.1716 7.46447C11.9763 7.2692 11.6597 7.2692 11.4645 7.46447C11.2692 7.65973 11.2692 7.97631 11.4645 8.17157L14.2929 11L11.4645 13.8284C11.2692 14.0237 11.2692 14.3403 11.4645 14.5355C11.6597 14.7308 11.9763 14.7308 12.1716 14.5355L15.3536 11.3536ZM5 11.5L15 11.5L15 10.5L5 10.5L5 11.5Z" fill="white"/> </svg> <span>CTE Resources Newsletter</span> </a> </div> <div class="cta-tile-box__list-item"> <a class="cta-tile-box__list-link" href="https://concussionfoundation.org/cte-resources/what-is-cte/" target="_self"> <svg width="21" height="21" viewBox="0 0 21 21" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="10.5" cy="10.5" r="10.5" fill="#1193D2"/> <path d="M15.3536 11.3536C15.5488 11.1583 15.5488 10.8417 15.3536 10.6464L12.1716 7.46447C11.9763 7.2692 11.6597 7.2692 11.4645 7.46447C11.2692 7.65973 11.2692 7.97631 11.4645 8.17157L14.2929 11L11.4645 13.8284C11.2692 14.0237 11.2692 14.3403 11.4645 14.5355C11.6597 14.7308 11.9763 14.7308 12.1716 14.5355L15.3536 11.3536ZM5 11.5L15 11.5L15 10.5L5 10.5L5 11.5Z" fill="white"/> </svg> <span>What is CTE?</span> </a> </div> <div class="cta-tile-box__list-item"> <a class="cta-tile-box__list-link" href="https://www.facebook.com/groups/cteresources" target="_blank"> <svg width="21" height="21" viewBox="0 0 21 21" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="10.5" cy="10.5" r="10.5" fill="#1193D2"/> <path d="M15.3536 11.3536C15.5488 11.1583 15.5488 10.8417 15.3536 10.6464L12.1716 7.46447C11.9763 7.2692 11.6597 7.2692 11.4645 7.46447C11.2692 7.65973 11.2692 7.97631 11.4645 8.17157L14.2929 11L11.4645 13.8284C11.2692 14.0237 11.2692 14.3403 11.4645 14.5355C11.6597 14.7308 11.9763 14.7308 12.1716 14.5355L15.3536 11.3536ZM5 11.5L15 11.5L15 10.5L5 10.5L5 11.5Z" fill="white"/> </svg> <span>CTE Resources Facebook Group</span> </a> </div> <div class="cta-tile-box__list-item"> <a class="cta-tile-box__list-link" href="https://concussionfoundation.org/cte-resources/science-of-cte/" target="_self"> <svg width="21" height="21" viewBox="0 0 21 21" fill="none" xmlns="http://www.w3.org/2000/svg"> <circle cx="10.5" cy="10.5" r="10.5" fill="#1193D2"/> <path d="M15.3536 11.3536C15.5488 11.1583 15.5488 10.8417 15.3536 10.6464L12.1716 7.46447C11.9763 7.2692 11.6597 7.2692 11.4645 7.46447C11.2692 7.65973 11.2692 7.97631 11.4645 8.17157L14.2929 11L11.4645 13.8284C11.2692 14.0237 11.2692 14.3403 11.4645 14.5355C11.6597 14.7308 11.9763 14.7308 12.1716 14.5355L15.3536 11.3536ZM5 11.5L15 11.5L15 10.5L5 10.5L5 11.5Z" fill="white"/> </svg> <span>The Science of CTE</span> </a> </div> </div> </div> </div> </div> </section> </main> </div>  <footer class="page-footer" role="contentinfo"> <div class="page-footer__container page-container"> <div class="page-footer__top-content"> <a class="page-footer__logo" href="https://concussionfoundation.org/" rel="home" aria-label="concussion" > <img width="210" height="57" 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