ACL Injury Prevention Series 6 out of 8

How to Prevent ACL Injury – Video Course #6


Hey guys, Dr. Shawn Rennick from Action Sports Clinic. We are continuing on with our ACL preventative exercise routines.

This exercise we are going to do is the squat or it’s called the air squat, but this is an exercise you can do just with the body weight or you can use a kettle bell or you can use a barbell but for the purposes of  what we are going to demonstrate today we are just going to use an air squat with just body weight.

So, to set this up what we want to do is, first of all we want to start off with Sofia’s feet just right around a little bit wider than hip width and we want the feet turned out slightly, maybe 3-5 degrees in external rotation.

What she is going to do is she is going to line this up where she puts pressure on big toe, the outside and the heel, so there is even pressure in those 3 spots. We call that the tripod foot.

Air Squat (Body Weight)…

So from this position here, what she is going to do is she is going to apply a little bit of pressure outward, like she is trying to spread the ground open. What that does is that it engages her glutes.

Ok, so as she does that, that is her set up. She has her tripod foot, she is externally rotating and engaging her glutes.

Next thing she is going to do is she is going to take a breath in and then she is going to sit back and pivot , she is going to hinge in her hips like that and she is going to keep her head up.

That’s good, this is perfect, so here you can see she is sitting back and she is going to break ninety degrees with her knees, we are trying to get her as low as she is comfortable.

If she has a significant knee injury or something, maybe she won’t feel comfortable going below ninety and that’s OK.


None of the information in this article is a replacement for proper medical advice. Always see a medical professional for advice on your individual injury.

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We specialize in the practice of Sports Medicine and provide services related to Sports Therapy, Chiropractic Care, Physical Therapy, Massage as well as off the shelf and custom Prosthetics & Orthotics.
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Do you provide custom brace solutions?
Yes, Dr. Rennick is qualified by the world’s top orthoepedic brands to develop custom bracing solutions for many conditions.
What Brands does Action Sports Clinic Carry?
We carry brands from the worlds top manufacturers including Donjoy, Össur, CTi, Bauerfeind, Thuasne and more.

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Monday          9:00 am - 5:00 pm
Tuesday         9:00 am - 5:00 pm
Wednesday   9:00 am - 5:00 pm
Thursday       9:00 am - 5:00 pm
Friday             9:00 am - 5:00 pm
Saturday       Closed


639 5 Avenue Southwest Suite 130
Calgary, Alberta T2P 0M9

Action Sports Clinic