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How Effective is ‘Injury Prevention’ Anyway?

In the United States alone, nearly 38 million youth and adolescents participate in organized sport.


Organized sport is the leading cause of injury in youth and adolescents.

Less awesome.

Here comes the confusing part…

Many studies have explored the benefits of injury prevention programs and proved their efficacy.

So why is adherence to these programs so incredibly low?

This is a frequently posed question in the world of sports medicine and rehabilitation. The risk of many sports injuries can be significantly reduced, yet there remains this disconnect that we have no control over injury. Too many of our athletes have the mindset, “it won’t happen to me” because of their lack of perceived control. I remember my 15-year-old self sitting in the front seat of my mom’s car on our way to soccer practice over a decade ago. She asked me what I would do if I got hurt and couldn’t fulfill my dream of playing professional soccer. I gave her the silent treatment after simply replying, “I’m just not going to get hurt.” Duh.

Welp. Spoiler alert: Mom was right. I got hurt over, and over, and over again. And it wasn’t until recently that I started to question why. I bought into three of the most popular and dangerous mindsets associated with sport. These mindsets are fatalism, invincibility, and acceptance. Fatalism is the idea that accidents happen, especially when engaging in inherently risky behavior like sport. Invincibility is a dangerous combination of denial and deflection, where an athlete thinks that injury won’t happen to them, and that if it does, is attributed to sheer luck rather than his/her (in)action. Sure, some injuries are just straight-up bad luck. But many of them can actually be avoided with the proper neuromuscular and strength training. The third mindset is acceptance, or the idea that pain is just a part of sport. Sport culture normalizes injury and often rewards athletes for ignoring and playing through pain or injury. While serenity and acceptance are wonderful attributes to embody, they should not be used as scapegoats when engaging in risky behavior. That would be like saying, “Well if I get smacked by a car while crossing this busy highway, it is what it is.” ……No. You stop and look both ways. You don’t just carelessly step out into traffic.

Fatalism, invincibility, and acceptance often cloud our judgement when it comes to implementing injury prevention programs. Many people even advocate for eliminating the phrase “injury prevention” and moving more towards and “injury reduction” mindset. I certainly see the validity in that verbiage, but also understand that essentially, we are talking about the same thing.

So, here are the facts:

Earlier this year, Webster and Hewett published an article where they pooled together data from various meta-analyses that looked at the effectiveness of ACL injury prevention programs with the intent of summarizing the results into one single source. They used five different databases and eight different meta-analyses. What they found was that there was an overall 50% reduction in the risk of all ACL injuries in all athletes (males and females) and a 67% reduction for non-contact ACL injuries in females. Read that again. FACT: ACL prevention programs reduce the risk of all ACL injuries by half in all athletes and non-contact ACL injuries by two-thirds in female athletes.

In July 2019, the American Journal of Sports Medicine published a similar clinical update. This article aimed to evaluate the common and effective components in ACL injury prevention programs and to develop an efficient, user-friendly tool that can assess the quality of such programs. In this systematic review and meta-analysis, the researchers looked at 18 studies with over 27,231 participants.  What they found was that programs targeting middle or high school-aged athletes reduced injury risk to a greater degree than did programs for college- or professional-aged athletes. They also found that ACL prevention programs are more effective when implemented throughout the sport season and not just simply in the pre-season.

They concluded that effective ACL injury prevention programs should include lower body strength exercises (specifically nordic hamstrings, lunges, and heel/calf raises) with a special focus on landing stabilization (jump and hold, drop and land). Injury prevention programs that include balance, core-strengthening, stretching, or agility are no more effective than programs that do not incorporate these components. All of the effective ACL injury prevention programs also included some sort of formal implementor training like instructional workshop, video, or brochure, where coaches or parents were trained in safe body mechanics. What good is an ACL injury prevention program if it is poorly instructed? The researchers came up with this awesome checklist that clinicians, coaches, athletes, and parents can use to gain insight on the quality of their current injury prevention practices. How much benefit are you getting from your current program?

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You might be wondering how long or how often you should perform your injury prevention program. Although Petushek et al. did not describe optimal dosing, the Journal of Orthopedic and Sports Physical Therapy did in their most recent update of clinical practice guidelines regarding exercise-based knee and anterior cruciate ligament prevention. The authors state that these programs should involve multiple trainings per week and that training sessions should last longer than 20 minutes, with a cumulative training volume of longer than 30 minutes per week.

Other general conclusions include:

  • ACL injury prevention programs do actually work
  • Programs should include certain strength exercises and landing drills
  • Programs should be performed both in- and out-of-season
  • Training sessions should be at least 20 minutes long with at least 2 sessions performed each week
  • Implementors should be trained in proper body mechanics prior to teaching these programs

For some reason, people don’t like hearing about injury prevention. Many just don’t buy into it. If you’ve made it this far (kudos and a sincere thank you), I’ve somehow tricked you into reading about a boring and controversial topic. Remember to always control the controllables. If you knew you could have prevented yourself or your child from sitting on the sidelines for 9-12 months, wouldn’t you?

If you or someone you know would like to be trained in ACL injury prevention implementation, feel free to head over to the contact page or send us a message at Thanks for reading, and until next time, be well.

*Special thanks goes out to Kelsey Griffith who eloquently presented on this topic during the 2018 Micheli Lecture: Psychology of Sports Injury and Rehabilitation at Boston Children’s Hospital in Boston, MA.*


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