Dr. Stacy Sims

In professional sport, it's not as much as when we're looking at recreational sport. Because when we're getting into professional sport, we have specific warm-ups, especially for football, put out by FIFA to prevent ACL tear, to make sure that you are actually properly warmed up

and engaging the right muscles and learning how to stop pivot because it's a mechanism in action usually is a twisting angle. But if we're looking at more age group or grassroots sports, because people aren't aware of this Q angle, they aren't aware of the quad dominance, women haven't been taught again how to work with these new mechanics. Then we're seeing a greater incidence of ACL tear.

and engaging the right muscles and learning how to stop pivot because it's a mechanism in action usually is a twisting angle. But if we're looking at more age group or grassroots sports, because people aren't aware of this Q angle, they aren't aware of the quad dominance, women haven't been taught again how to work with these new mechanics. Then we're seeing a greater incidence of ACL tear.

Yeah, it's very high incidence. Yeah.

Yeah, it's very high incidence. Yeah.

It's all about being strong. So if we're looking at what is the biggest thing for ACL prevention, and I'll bring in one of my PhD students who's graduated, looked at... ACL rehab after surgery. And it comes down to the definitive difference between quad and hamstring strength.

It's all about being strong. So if we're looking at what is the biggest thing for ACL prevention, and I'll bring in one of my PhD students who's graduated, looked at... ACL rehab after surgery. And it comes down to the definitive difference between quad and hamstring strength.

So if we're looking at improving the strength capacity of the hamstrings, then it offsets some of the default strength that the quads are taking. So if we're able to balance it from being front-loaded to being more even-loaded, it comes down to how we were talking about distribution of forces through the knee with men being more linear and women having an angle.

So if we're looking at improving the strength capacity of the hamstrings, then it offsets some of the default strength that the quads are taking. So if we're able to balance it from being front-loaded to being more even-loaded, it comes down to how we were talking about distribution of forces through the knee with men being more linear and women having an angle.

Well, if we're able to take that angle and we can evenly distribute the load between the muscles of the hamstring and the quads of the front and the back, then it pulls the forces more centrally, which reduces the stress more. of one point of contact.

Well, if we're able to take that angle and we can evenly distribute the load between the muscles of the hamstring and the quads of the front and the back, then it pulls the forces more centrally, which reduces the stress more. of one point of contact.

So for developing the strength through the whole posterior chain, we're looking at glutes, we're looking at hamstrings, we're doing a lot of calf work, and we can develop that whole posterior part. It reduces the incidence of being pulled in one direction and the misalignment of forces. The other is the cutting motion where we're looking at lateral movement.

So for developing the strength through the whole posterior chain, we're looking at glutes, we're looking at hamstrings, we're doing a lot of calf work, and we can develop that whole posterior part. It reduces the incidence of being pulled in one direction and the misalignment of forces. The other is the cutting motion where we're looking at lateral movement.

So a lot of times when we're looking at warmups and you're observing on like kids sports, there's not a lot of lateral development. So if we're looking at prevention of ACL tear, we have to work a lot of the explosive lateral movements as well as jumping and single leg jumping. And these are things that aren't really done in grassroots.

So a lot of times when we're looking at warmups and you're observing on like kids sports, there's not a lot of lateral development. So if we're looking at prevention of ACL tear, we have to work a lot of the explosive lateral movements as well as jumping and single leg jumping. And these are things that aren't really done in grassroots.

But as we start to get more into professional sport, it's becoming more and more apparent that we have to do specific mechanism of injury prevention. So they're looking at the sport. We're a football player. We have a high incidence of ACL potential. So we have to really develop our posterior chain. We have to work on our power for our lateral movements, our step and our jump.

But as we start to get more into professional sport, it's becoming more and more apparent that we have to do specific mechanism of injury prevention. So they're looking at the sport. We're a football player. We have a high incidence of ACL potential. So we have to really develop our posterior chain. We have to work on our power for our lateral movements, our step and our jump.

So this is part of what FIFA has put in for the warm-up because there is such a draw. And as you were saying, that 33 women in the World Cup tore their ACL. Part of it is loading. Part of it is a little bit maybe overtrained before they go into the World Cup. But a lot of it has to do with this imbalance between the muscles and now having to address it.

So this is part of what FIFA has put in for the warm-up because there is such a draw. And as you were saying, that 33 women in the World Cup tore their ACL. Part of it is loading. Part of it is a little bit maybe overtrained before they go into the World Cup. But a lot of it has to do with this imbalance between the muscles and now having to address it.

Yeah, for the most part. Because, I mean, a lot of the stuff when I was going through school, even now, textbooks. So I was standing in the metro in D.C. a few months ago and there was a young girl who has just gotten into exercise physiology and I overheard a conversation saying,