APEX PWR  |  Athlete Angle + PT Feature  |  Vol. 75

Athlete Training in Tigard, Oregon: The Strength Threshold Every Parent of a Female Youth Athlete Should Know

Every parent of a youth athlete has seen it happen. A fast plant, a sharp cut, a collision in the penalty box, and suddenly a season is over. For female youth athletes, the math behind those moments is not as random as it looks.

A study published in BMJ Open Sport and Exercise Medicine followed 225 youth athletes in Sweden, ages 15 to 19, across soccer, basketball, hockey, handball, skiing, and floorball. Researchers measured lower-body strength using a 1-rep max barbell squat, then tracked traumatic knee injuries, including ACL tears, through high school. What they found should change how every parent in the Portland metro thinks about their daughter's summer training plan.

The study was flagged most recently by Dr. Paul Gamble PhD, a well-respected strength and conditioning researcher, in an Instagram research review posted April 6. His framing of the underlying problem is sharp: rapid growth, higher training loads, and a lack of formalized, regular, high-quality strength training creates a perfect storm for young female athletes. The research backs him up.

What the Study Actually Found

One squat threshold, cleanly measured, dramatically separating the injured from the uninjured. That is the kind of finding that should change training decisions, not just generate a round of social media posts.

Why the Gender Split Matters

During adolescence, girls gain lower-body strength more slowly than boys do. That is normal physiology. What is not normal, and what creates the perfect storm the study keeps pointing at, is what adolescent female athletes are asked to do on top of that slower strength curve.

Rapid growth periods. Higher competitive training loads. Year-round club schedules. Early sport specialization. Back-to-back games and weekend tournaments that pile fatigue on athletes who do not yet have the lower-body strength base to absorb the forces. Less strength plus more demand equals higher odds of injury. The 9.5x number is what that equation looks like in a peer-reviewed journal.

The good news is that the same study points at the solution. Strength is trainable. Lower-body strength above a measurable threshold is associated with dramatically lower injury odds. That is the piece of this parents can actually do something about.

It also tracks with a broader body of research. The landmark paper by Hewett and colleagues in the American Journal of Sports Medicine identified neuromuscular control and valgus loading as significant predictors of ACL injury in female athletes, and that line of research has consistently shown that structured strength and neuromuscular training programs reduce ACL injury rates in young female athletes. The 2017 study above is the latest in a long chain pointing at the same solution.

Why This Is an Athlete Training in Tigard, Oregon Conversation

Here is the reality for the local parent. The local sports environment in Tigard, Portland, Beaverton, and Lake Oswego is competitive. Club teams start young. Year-round play is normalized. Most youth athletes in the Portland metro are not getting formalized strength training anywhere inside their sport. School teams do not usually offer it at the level the research calls for, and most club programs do not either.

That is exactly the gap APEX PWR was built to fill. For nearly 12 years, our youth sports performance training program has focused on building the strength, speed, power, and resiliency that translate to any sport, because those are the physical qualities that hold up against high-demand competitive schedules and reduce injury risk at the same time.

Our approach is straightforward. Strength-based programming. Measurable targets. Professional coaching under the same roof as our sports physical therapy team, so nothing gets lost in the handoff. We serve youth athletes across every major sport in the area, from soccer and basketball to football, volleyball, baseball, lacrosse, hockey, and track.

Sports Science Assessment: Building From Data, Not Guesses

The Summer Window Closes Fast

Parents ask every year when the right time is to start. The honest answer is almost always now, because the off-season is where the most meaningful athletic development happens. Training volume is not fighting against a competition schedule. Athletes can build a real base. Progress stacks.

For most APEX athletes, summer looks like 8 to 12 weeks of consistent strength, speed, and power development before fall tryouts and preseason. That is the window where a female youth athlete can move from below the strength threshold the research identifies to comfortably above it. That is also the window where a returning athlete can rebuild the base she lost during a long competitive season, and where a new athlete can establish a training habit she carries forward.

Sports seasons come back whether the work got done or not. The difference between the athletes who break out next year and the ones who keep getting injured is usually decided in May, June, and July.

The PT Feature: Already Injured? Start There.

Not every reader of this article has a healthy athlete right now. Some of you are sitting across from a daughter in a knee brace, a son recovering from a sprain, or an athlete in that frustrating middle zone where physical therapy has ended but they are not ready to compete again. We built APEX for that athlete just as much as the healthy one.

Our sports physical therapy team uses a strength-based rehabilitation model. That means alongside the pain management, mobility work, and sport-specific movement retraining, we are actively loading tissue and rebuilding strength throughout the rehab process. Dr. Josh Davis, DPT, CSCS, OCS puts it plainly:

That framing matters because it changes the endpoint. The traditional model of physical therapy gets an athlete out of pain. The APEX model gets them out of pain and physically stronger, which is what protects them when they return to sport. Our physical therapists and sports performance coaches operate in the same 10,000 square foot facility, which means an athlete can transition directly from rehab into return-to-sport training and then into performance programming without changing providers, changing facilities, or losing continuity.

We say this carefully, because we are not interested in overclaiming. It is common for our injured athletes to come back stronger than they were before the injury. That is not guaranteed for every case. But with the right rehab dose, a real strength training plan, and a team that owns the full path from first PT session to first game back, it is a realistic goal, not a marketing line.

Injury Risk Reduction, Honestly Framed

A quick note on language. Most coaches, parents, and players search for "injury prevention," and the content world has followed. We understand that. But we are careful at APEX to talk about injury risk reduction, not injury prevention, because no program can prevent every injury. Sports have inherent risk. What strength training, measurable benchmarks, quality coaching, and appropriate load management can do is move the odds meaningfully in an athlete's favor. That is the work.

The 2017 study is one data point in a long line of evidence saying the same thing. A female youth athlete with a 1RM squat meaningfully above bodyweight is playing a different risk profile than one below it. That change is trainable. That is what your summer is for.

What a Parent Can Do This Week

• Look at your athlete's summer schedule and carve out 8 to 12 weeks of protected strength training space
• If your athlete has never had a formal strength assessment, book one. Baseline data changes the conversation.
• If your athlete is returning from injury, start with sports physical therapy. We rebuild strength, then transition to performance.
• If you are choosing between sport practice and summer strength training, the research strongly supports prioritizing strength training in the off-season.
• Find a training environment with professional coaching and objective measurement. Vibes are not a plan.

The Bottom Line

The research on female youth athletes and knee injury risk is about as clear as research in this space gets. Strength matters. Strength is trainable. Strength training for female youth athletes is protective, not optional. The parents who internalize that, and find their daughters a real training environment this summer, are shifting the odds meaningfully over the next year and the next five years of her athletic life.

If that is the direction you want for your athlete, we are here. Youth sports performance training, sports science assessment, sports physical therapy, all under one roof in Tigard, Oregon, serving the greater Portland metro. Summer is the window. Let's use it.

The APEX Team

Related Resources

• Youth Sports Performance Training in Tigard, Oregon
• Sports Science Assessment & Athlete Testing
• Sports Physical Therapy in Tigard, OR
• Youth Speed & Agility Training
• 1-on-1 Personal Training
• Strength Training for Athletes: The Foundation Principle (AAv74)