ClinicalAthlete Podcast
Episodes
Episode 134: Busting The Mystique of ExRx
12 Dec 2025
Contributed by Lukas
On this show, Quinn Henoch and Zak Gabor attempt to bust down the unnecessary mystique of exercise prescription. Have you ever felt like a topic is ju...
Episode 133: Nociception IS Necessary For Pain – Rethinking “Pain Science” w/ Asaf Klaf Weisman
28 Nov 2025
Contributed by Lukas
On this show, we welcome a very special guest Asaf Klaf Weisman. Asaf is a clinician and a researcher, who for the better part of the last decade has ...
Episode 132: A Third Path For The PT w/ MovementX
14 Nov 2025
Contributed by Lukas
On this show, Quinn Henoch and Zak Gabor welcome two special guests onto the show - Josh D’Angelo and Rich Ortiz of MovementX Josh is a co-founde...
Episode 131: Dungeons & Dynos w/ Chris Juneau & Jason Tuori
31 Oct 2025
Contributed by Lukas
On this show, Quinn Henoch and Zak Gabor welcome two special guests onto the show - Chris Juneau and Jason Tuori. Chris and Jason are two all-star phy...
Episode 130: Hooper’s Delight w/ Ramsey Nijem
16 Oct 2025
Contributed by Lukas
On this show, Quinn Henoch and Zak Gabor welcome a special guest onto the show - Ramsey Nijem who is the Director of Performance for the men’s baske...
Episode 129: A Better Perspective on Injury & Rehab
02 Oct 2025
Contributed by Lukas
On this show, Quinn Henoch and Zak Gabor riff on a few topics that all have to do with how we as providers, and how athletes view injury, rehab, and t...
Episode 128: Leveling Up The CA Provider Program
19 Sep 2025
Contributed by Lukas
On this show, Quinn Henoch and Zak Gabor discuss some major upgrades to our Clinical Athlete Provider curriculum - now, the thing is, these upgrades a...
Episode 127: MObiLiTy – What Is Even That?
05 Sep 2025
Contributed by Lukas
On this show, Zak and Quinn discuss the concept of “Mobility” and share how their thoughts and feelings about this topic have evolved over the las...
Episode 126: Dips Don’t Kill Shoulders + More Hot Takes
23 Aug 2025
Contributed by Lukas
On this show, we answer some of your questions about the challenges you’re facing with exercise prescription! We go over: “Overstretching”...
Episode 125: Everything You’d Ever Possibly Need to Know About Early to Mid Stage Management of ACL Rehab
08 Aug 2025
Contributed by Lukas
On this show, we welcome back the one and only Steph Allen from ACL Resolve to talk about . . you guessed it - ACL rehab! We go over a TON of t...
Episode 124: CSCS, OCS, Yada Yada Yummy Cert Salad!
25 Jul 2025
Contributed by Lukas
We get these questions a lot - “Should I get the CSCS cert?” “Should I get my OCS?” and the like. So, we thought we’d give our thoughts on t...
Episode 123: Catch Up w/ Zak & Quinn
11 Jul 2025
Contributed by Lukas
On this show, Quinn & Zak both hop on the mic for the first time in a few shows to catch up on all current Clinical Athlete and life happenings. It wa...
Episode 122: Q&A – Challenges With Your Exercise Prescription
27 Jun 2025
Contributed by Lukas
On this show, Quinn hops on the mic to discuss some of the challenges you shared with us about your exercise prescription plans. What to do when there...
Episode 121: Clinical Athlete Diary Solo Cast – “Can We Do More Volume?”
12 Jun 2025
Contributed by Lukas
On this show, Quinn hops on the mic solo to talk about that angst that athletes feel when they can’t train the way that they want. Why is it that we...
Ep 120: Clinical Athlete Diary Solo Cast – I’m Right Even When I’m Wrong
29 May 2025
Contributed by Lukas
On this show, Quinn hops on the mic solo to talk about “being wrong”. This topic was inspired by his own journal entry from high school that he re...
Episode 119: The Learner’s Arc
15 May 2025
Contributed by Lukas
On this show, Quinn and Zak discuss the “Learner’s Arc”. What are the friction points and advantages of being in different stages of your career...
Episode 118: A Life in Pro Tennis w/ Kayla Fujimoto Epperson
01 May 2025
Contributed by Lukas
On this show, we have an awesome guest - Kayla Fujimoto Epperson. Kayla is a Physical Therapist and has had a pretty epic journey through her profes...
Episode 117: Train Smarter, Not Longer – The Benefits of Minimum Effective Dose w/ Dr. Pak
17 Apr 2025
Contributed by Lukas
On this show, we are joined by someone we’ve been wanting to get on the Clinical Athlete podcast forever - Dr. Pak Androulakis-Korakakis. Dr. Pak,...
Episode 116: Clinical Athlete Diary Solo Cast: Don’t Change Everything
03 Apr 2025
Contributed by Lukas
On this show, Quinn hops on the mic solo to talk about how to manage your athlete’s plan when they have setbacks. The answer is that you must panic,...
Episode 115: KneeBola Starter Pack
20 Mar 2025
Contributed by Lukas
On this show Quinn Henoch, Steph Allen, and Zak Gabor discuss some of the exercises that they find themselves incorporating when managing knee issues ...
Episode 114: How to Build “Authority” in The Rehab Space
06 Mar 2025
Contributed by Lukas
On this show, Quinn Henoch and Zak Gabor discuss the idea of creating “authority” within the field. Many of you in our community are looking to de...
Episode 113: What’s Your Training Look Like?
20 Feb 2025
Contributed by Lukas
On this show, Quinn and Zak discuss what their own strength & conditioning and training programs currently look like. Part of being a “Clinical Athl...
Episode 112: Is PT School The Problem?
05 Feb 2025
Contributed by Lukas
On this show, Quinn & Zak discuss “the system” - the clinician educational system to be specific. Using our own experiences going through PT schoo...
Episode 111: Fails & Wins
24 Jan 2025
Contributed by Lukas
On this show I’m joined by fellow Clinical Athlete Co-Founder Zak Gabor, and we reflect on some of our most memorable clinical wins, AND, some of ou...
Episode 110: Clinical Athlete – Year in Review
02 Jan 2025
Contributed by Lukas
On this show, Quinn & Zak reflect on 2024. What a year it was… Tons of change and growth. And while we might be discussing things specific to Clinic...
Episode 109: Program Timeline & Phases – What do??
06 Dec 2024
Contributed by Lukas
On this show, Quinn and Zak discuss the challenges of structuring exercise and rehab plans. How long do we wait to reintroduce important elements...
Episode 108: Zak’s Journey
15 Nov 2024
Contributed by Lukas
A couple of episodes ago, we flipped the script a little bit with Zak interviewing Quinn on his background and life journey. On this show, Quinn ...
Episode 107: RPE and Autoregulation and Prognosis, Oh my!
31 Oct 2024
Contributed by Lukas
On this show, we discuss a couple of topics that often give providers a lot of friction - what exactly is “autoregulation” and how does RPE fit? ...
Episode 106: Quinn’s Journey
17 Oct 2024
Contributed by Lukas
On this show, the script gets flipped a little, and Zak interviews Quinn all about his journey from a young lad to what’s led him to where he is tod...
Episode 105: SuperTotal Extravaganza
29 Sep 2024
Contributed by Lukas
On this show, Quinn Henoch, John Flagg, and Jared Maynard hop on the mic together for the first time in a while, to discuss all things barbell sport a...
Episode 104: Complexity – What do?
19 Aug 2024
Contributed by Lukas
Quinn and Zak discuss some themes that have popped up while graduating our newest cohort of Clinical Athlete Providers - (1) is learning about complex...
A New Chapter
03 Jun 2024
Contributed by Lukas
It really is a new chapter for Clinical Athlete, and we could not be more excited to share with you! Quinn Henoch and Zak Gabor dive deep into Clini...
Episode 102: All Strength is NOT Created Equal
31 May 2023
Contributed by Lukas
This show is a recording of a CALU Journal Club that I led, on a paper titled: "Strength Classification and Diagnosis: Not All Strength Is Created Equ...
Episode 101: Improve Your Return to Sport Decision Making
02 Mar 2023
Contributed by Lukas
This show is a recording of a CALU Journal Club that we led on a paper titled: A Framework for Clinicians to Improve The Decision-Making Process in Re...
Episode 100: The Truth about Injury “Prevention” with Franco Impellizzeri
17 Feb 2023
Contributed by Lukas
It’s Episode 100!! One of our favorite people, Franco Impellizzeri and his team came out with a new paper titled, “Prevention versus risk reductio...
Episode 99: Clinical Files: A Runner With Hip Pain
28 Jan 2023
Contributed by Lukas
On this show, Steph Allen shares a case that she had, working with a avid trail runner with hip pain. It was a great discussion of her overall thought...
Episode 98: CALU Foundations 2.0
14 Dec 2022
Contributed by Lukas
This is a special show. I’m sitting down with my dear friend and Co-Founder of CALU and The Level Up Initiative, Zak Gabor, and we are talking abo...
Episode 97: Coach’s Corner
09 Nov 2022
Contributed by Lukas
Title: Episode 97: Coach’s Corner We’re back! It’s been a while but the ClinicalAthlete Podcast is coming back strong with a Coach’s ...
Episode 96: All Things Hip With Joanne Kemp
08 Jan 2022
Contributed by Lukas
On this episode we dive into the following topics with Joanne Kemp: Outcomes of hip arthroscopies for labral tears and FAI Statistics of hip...
Episode 95: CALU Plus
14 Dec 2021
Contributed by Lukas
During this special episode, Quinn Henoch and Zak Gabor are talking about some significant upcoming changes to the ClinicalAthlete Forum. After 6 ye...
Episode 94: The Student Shenanigans with Andrew Gillihan
26 Oct 2021
Contributed by Lukas
Welcome back to the ClinicalAthlete Student Shenanigans! On this week’s episode, we have Andrew Gillihan with a background of a Master’s in...
Episode 93: “Strong is Strong” with Bryce Krawczyk on the Nameless Series
13 Sep 2021
Contributed by Lukas
Wondering how the oh so famous Bryce Krawczyk feels about the misconceptions circling around the powerlifting world and what you should know if you’...
Episode 92: The CALU Clinical Files with Quinn and Steph
18 Aug 2021
Contributed by Lukas
Just to remind all you listeners, Quinn and Steph have started this new series to dive into the details about some of their own clinical cases. Q...
Episode 91: The Climbing Athlete with Natasha Barnes
30 Jul 2021
Contributed by Lukas
Are you a healthcare professional wanting to be more involved climbers? Are you a climber that is frustrated with injuries wanting to know how to get ...
Episode 90: The Student Shenanigans with Andrea Farmer
13 Jul 2021
Contributed by Lukas
Welcome back to the ClinicalAthlete Student Shenanigans! On this week’s episode, we have Andrea Farmer, current DPT student at the University of ...
Episode 89: Return to Sprinting with Dan Lorenz
26 Jun 2021
Contributed by Lukas
Have we been using objective measures to decide when patients can get back to sprinting or are we blindly following a timeline? Have our previous “p...
Episode 88: The CALU Clinical Files with Quinn and Steph
05 Jun 2021
Contributed by Lukas
Quinn and Steph are starting another NEW series on the ClinicalAthlete Podcast! Welcome to The CALU Clinical Files. To all you listeners (yes ...
Episode 87: The NEW “Nameless Series” with John and Jared
27 May 2021
Contributed by Lukas
Ever dive into the research for a whole weekend and then just had NoOoO idea how to apply it to your client on Monday morning? Or even better, you fig...
Episode 86: The Student Shenanigans with Logan Benjamin
18 May 2021
Contributed by Lukas
Welcome back to the ClinicalAthlete Student Shenanigans! On this week’s episode, we have Logan Benjamin, a chiropractic student and dad to a real...
Episode 85: Behind the Scenes of CALU Summit 2021 with Founders Quinn Henoch, Steph Allen, and Zak Gabor
08 May 2021
Contributed by Lukas
What is the mission behind the CALU Summit, and why is it so special? In this episode, Quinn, Steph, and Zak go hard on what the CALU Summit is ...
Episode 84: Coach’s Corner- Inside Look with John
28 Apr 2021
Contributed by Lukas
In this part 2 of a 3 part series, John takes a turn to gets talk about his own training program and how he got through a recent "kneebola”. He di...
Episode 83: Resilience with Nick Hannah
21 Apr 2021
Contributed by Lukas
Be grateful, be kind, don’t judge and show compassion. This is what Nick is all about. Nick Hannah, a physiotherapist out of Canada, shares his ...
Episode 82: The Student Shenanigans with Mark Manera
14 Apr 2021
Contributed by Lukas
Welcome to the ClinicalAthlete Student Shenanigans! Chris, Megan and Derrick are officially taking the reins on meeting up with student clinicians to ...
Episode 81: Science to Practice: All Things Injury Modeling with Judd Kalkhoven- Part 2
01 Apr 2021
Contributed by Lukas
Judd Kalkhoven IS BACK for part two!! Judd is a PhD candidate, lecturer and researcher in exercise and sports science at the University of Techno...
Episode 80: Science to Practice: All Things Injury Modeling with Judd Kalkhoven- Part 1
25 Mar 2021
Contributed by Lukas
Tissue Mechanics? Athletic Injury? Conceptual Frameworks? PhD Candidate, lecturer and researcher Judd Kalkohoven out of Sydney, Australia gets on...
Episode 79: Coach’s Corner- An Inside Look with Jared
20 Mar 2021
Contributed by Lukas
On our previous Coach's Corner series, Quinn, John and Jared each broke down a case study. In this part 1 of a 3 part series, the team gets together ...
Episode 78: The Student Series with James Chung
05 Mar 2021
Contributed by Lukas
Wondering how communication and the environment affects how you learn to move? In this episode, PT student James Chung catches up with Chris ...
Episode 77: Science to Practice: All Things Isometrics with Dustin Oranchuk
11 Feb 2021
Contributed by Lukas
Yielding isometrics? Overcoming isometrics? Eccentric quasi isometrics? What do these look like, and how can they be applied in rehab and in training?...
Episode 76: Bridging the Gap: Academics, Clinical Practice, and Burnout with Brendan DeForge
27 Jan 2021
Contributed by Lukas
How do you manage the transition from a professional degree program, to practicing clinically? How do we the bridge the gap between what's taught in a...
Episode 75: The CALU Community: The merger that dreams are made of – with Zak Gabor and Steph Allen
10 Jan 2021
Contributed by Lukas
Big things are happening!! By now you've probably heard about Clinical Athlete and Level Up coming together to create one amazing community of passion...
Episode 74: Special Tests for the Shoulder. Not So Special? With Paul Salamh
28 Dec 2020
Contributed by Lukas
How special are special tests for the shoulder? Are they valid? Do they aid us in providing an accurate diagnosis? How important is it to actually hav...
Episode 73: The Student Series with Derrick Bark
18 Dec 2020
Contributed by Lukas
The student series is back! This week Chris and Quinn link up with chiropractic student Derrick Bark. Derrick shares his story of what drew him into ...
Episode 72: Jason Tuori – Footwear and the Running Athlete, Part 2
13 Dec 2020
Contributed by Lukas
The long awaited Part 2 of our discussion with Jason Tuori is here, and it's full of all kinds of brain gainzzz. This time, the conversation switches...
Episode 71: Jason Tuori – Footwear and the Running Athlete, Part 1
01 Dec 2020
Contributed by Lukas
You thought Clinical Athlete was all about strength sports? Think again! For all you runners out there, we've got you covered with the latest edition ...
Episode 70: Coach’s Corner – Behavior Change and Working With Challenging Athletes
20 Nov 2020
Contributed by Lukas
The final instalment in our Coaches Corner series is here! In this edition, Quinn details a case study about one of his athletes, and the crew chime...
Episode 69: The Student Series with Megan Broussard
13 Nov 2020
Contributed by Lukas
Our Journal Club Intern Megan Broussard is an absolute all-star! In this edition of our student series, Megan talks shop with Chris and Quinn on ...
Episode 68: Coach’s Corner – Managing Recurring Injury Flare Ups
05 Nov 2020
Contributed by Lukas
The anticipation has been killing you guys, hasn't it? The long awaited "Part 2" to the Coaches Corner series is here! It's like the original Star War...
Episode 67: Coach’s Corner – Back Pain at Lockout
24 Oct 2020
Contributed by Lukas
Clinical Athlete is going LIVE. Well..err, we were at least. A few months back we recorded a live episode, and a bunch of you amazing Clinical Athlete...
Episode 66: The Student Series with Geronimo Bejarano
12 Oct 2020
Contributed by Lukas
How do you keep up with new evidence as a student? How do you dig deep into clinical and critical thinking before even beginning patient interaction? ...
Episode 65: What Role Does Strength & Conditioning Play in Athletic Performance & Development? featuring Korey Van Wyk
02 Sep 2020
Contributed by Lukas
Korey Van Wyk talks to the ClinicalAthlete team about his experience in the field of Strength & Conditioning. From his days in a small school, to a l...
Episode 64: Two Communities, One Mission: Coming Together For Something Special
28 Jul 2020
Contributed by Lukas
This episode is a little different. As some of you may know, ClinicalAthlete has joined forces with The Level Up Initiative to put together a spe...
Episode 63: A Talk With World Class Powerlifting Coaches Matt Gary and Sioux-z Hartwig-Gary
24 Jul 2020
Contributed by Lukas
What are the guiding principles that new strength & conditioning professionals should focus on to give their best to their athletes? How do seasoned c...
Episode 62: “It’s the Quadz Until It’s Not The Quadz” Part 2: All Things Knee & Science with Erik Meira, PT.
18 May 2020
Contributed by Lukas
When it comes to treating the knee, what's important? Why does Erik say the quad is king? Does the hip matter? Can we 'change movement' to decrease ri...
Episode 61: “It’s the Quadz Until It’s Not The Quadz” Part 1: All Things Knee & Science with Erik Meira, PT.
17 Apr 2020
Contributed by Lukas
When it comes to treating the knee, what's important? Why does Erik say the quad is king? Does the hip matter? Can we 'change movement' to decrease ri...
Episode 60: The Case for Retiring Flexibility as a Major Component of Physical Fitness with Dr. Jim Nuzzo
16 Mar 2020
Contributed by Lukas
Is flexibility testing valid? What evidence is it even founded on? Should it be retired as a major component of physical fitness? Should we de-emphasi...
Episode 59: The Athlete’s Story: Training with a Chronic Injury and The Lessons Learned Along The Way, with Bryce Krawczyk
09 Mar 2020
Contributed by Lukas
This show is a bit unique. In this episode, we interview Bryce Krawczyk, who is an elite powerlifter. The topic of the discussion is the recurrent inj...
Episode 58: Let’s Talk Poop: Dispelling Myths About The Gut Microbiome with Dr. Gabrielle Fundaro, PhD
24 Feb 2020
Contributed by Lukas
Whether or not diet & nutrition is your expertise, you likely get questions from your athletes about the popular practices that are espoused, with gut...
Episode 57: Placebo in Sports Medicine & Athletic Performance with John Kiely: Part 2
03 Feb 2020
Contributed by Lukas
What is placebo? Is it a "real" phenomenon? Can we harness it for the athlete's benefit? Should we? We welcome world-renowned coach and lecturer John ...
Episode 56: Placebo in Sports Medicine & Athletic Performance with John Kiely: Part 1
27 Jan 2020
Contributed by Lukas
What is placebo? Is it a "real" phenomenon? Can we harness it for the athlete's benefit? Should we? We welcome world-renowned coach and lecturer John ...
Episode 55: Character Counts: Finding Purpose as a Clinician with Jackson Taylor (Part 2)
03 Jan 2020
Contributed by Lukas
Why did we choose our profession? How does our character impact our ability to succeed professionally? What are the actionable steps we can take to be...
Episode 54: Character Counts: Finding Purpose as a Clinician with Jackson Taylor (Part 1)
30 Dec 2019
Contributed by Lukas
Why did we choose our profession? How does our character impact our ability to succeed professionally? What are the actionable steps we can take to be...
Episode 53: The Lost Art: Rehabilitation and Training For The Performing Arts with Jacob Manley
09 Dec 2019
Contributed by Lukas
It's less common in the performing arts sphere to think about dancers and musicians as "athletes"; but physiology is physiology. We welcome onto the s...
Episode 52: Patellofemoral Pain: Clinical Practice Guidelines with Dr. Richard Willy (Part 2)
23 Nov 2019
Contributed by Lukas
We welcome onto the show, Dr. Rich Willy, PT, PhD for Part 2 of our interview! Rich is an assistant Professor at the University of Montana’s School ...
Episode 51: Patellofemoral Pain: Clinical Practice Guidelines with Dr. Richard Willy (Part 1)
09 Nov 2019
Contributed by Lukas
We welcome onto the show, Dr. Rich Willy, PT, PhD. Rich is an assistant Professor at the University of Montana’s School of Physical Therapy & Rehabi...
Episode 50: Kickass Rehab For Female Athletes with Ellie Somers, DPT
11 Oct 2019
Contributed by Lukas
We welcome onto the show, Ellie Somers, DPT. Ellie is the owner and head SheWolf for Sisu Sports Performance & PT in Seattle, WA, where she works to f...
Episode 49: Case Study: Powerlifter with Hip Pain
28 Sep 2019
Contributed by Lukas
We're back with the first installment of our case study series! In this episode, we discuss an athlete of John Flagg, who's been dealing with hip pain...
Episode 48: Training & Treatment of The Barbell Athlete
21 Sep 2019
Contributed by Lukas
The ClinicalAthlete crew is back! In this episode, we tackle the training and treatment needs of Barbell athletes. What are the key principles for sus...
Episode 47: Student Series: Staying Up To Date on The Literature with Nate Wong, SPT
07 Sep 2019
Contributed by Lukas
Keeping up with all the research that comes out can be a daunting task. What are some useful strategies to help? How do we make the information "stick...
Episode 46: Reconditioning The Injured Athlete: Principles > Methods with Jarred Boyd
31 Aug 2019
Contributed by Lukas
Why is it important to understand rehab and training principles rather than memorizing methods? What are the important principles, and how do we imple...
Episode 45: Reconciling Biomechanics with Pain Science with Greg Lehman
24 Aug 2019
Contributed by Lukas
Awareness of the 'science of pain' seems to have increased over the last several years (a good thing!). With the understanding that "psychosocial" fac...
Episode 44: Injuries in Powerlifting: Crunching The Numbers with Andrew Patton
17 Aug 2019
Contributed by Lukas
How prevalent are injuries in powerlifting? Is there a difference between male and female? Does having a pre-existing training limitation increase you...
Episode 43: Pain: Moving Beyond The BioPsychoSocial Model
11 Aug 2019
Contributed by Lukas
The biopsychosocial model is currently the gold standard with which we understand pain. However, are there limitations? Is it being misinterpreted? Ho...
Episode 42: The Rise of the Masters Athlete: Redefining what it means to be “older” with Christina Prevett
03 Aug 2019
Contributed by Lukas
Is training and rehab for our Masters athletes really that much different? What are the common misconceptions and legitimate considerations when worki...
Episode 41: Treating & Training The Endurance Athlete with Danielle Adler Kroot
27 Jul 2019
Contributed by Lukas
What are the important first steps for the beginner endurance athlete? How much do running biomechanics matter for performance and injury? How does on...
Episode 40: Overhead Lifting For Athletes with Marcos Soriano
19 Jul 2019
Contributed by Lukas
Are weightlifting overhead derivatives useful for athletes who are not competitive weightlifters? What do we really mean when we say force output, rat...
Episode 39: Cardiopulmonary Considerations in Orthopedic Rehabilitation with Rich Severin
12 Jul 2019
Contributed by Lukas
Why are vitals vital? Do orthopedic clinicians do an adequate job of screening the cardiovascular system? How can we do better? What does "breathing d...
Episode 38: The Nordic Hamstring Curl, Screening, and Injury Risk: What We Know with Dr. Nicol van Dyk
29 Jun 2019
Contributed by Lukas
What does the current evidence tell us about the effects of Nordic Hamstring Curl on injury rates? What does injury "prevention" really mean, and what...
Episode 37: Using Emerging Strategies in Powerlifting Programming with Mike Tuchscherer (Part 2)
21 Jun 2019
Contributed by Lukas
How do we minimize assumptions and simplify the powerlifting programming process? How do we maximize progress for the individual? How can we minimize ...
Episode 36: Using Emerging Strategies in Powerlifting Programming with Mike Tuchscherer (Part 1)
15 Jun 2019
Contributed by Lukas
How do we minimize assumptions and simplify the powerlifting programming process? How do we maximize progress for the individual? How can we minimize ...
Episode 35: Knee Function & Strength Differences Between Young Athletes Who Return to Prior Level and Those That Don’t after ACLR, with Matt Ithurburn, PT, PhD.
07 Jun 2019
Contributed by Lukas
Do young athletes who return to prior level of sport after ACLR have better knee function and strength when they are cleared, compared to young athlet...