what's up everyone Morey Croson here from the performance lab of California and we're going
to do another breakdown here today really a speed breakdown primarily it's going to be on really how
to prevent hamstring injuries for you guys and really I think this could end up saving a lot of
people from having some type of hamstring problem just because it's such a easy area to focus on
that can end up really helping you out a ton when it comes to the deceleration phase and it's a the
two guys around the fastest 40s at the NFL Combine and I know there's a few breakdowns that we need
to catch up on but sent to it's the NFL Draft this patter sorry the NFL Combine this past week wanted
to be able to go over that see some of the the big benefits to these guys that have runs these fast
times as well as I think again more importantly make it so we can get some injury prevention
information so here we're gonna start with Perry Nickerson here you can see what what makes him a
very fast printer just like a lot of these guys is that he's able to really do a great job of
driving that getting that knee knee height up to hip height and then drive getting that extension
one what's most most important is when you get an extension with that knee really being able to
reach out in front of them you can see what that left-sided especially you could really reach out
in front of them really pull himself back there which is exactly what you need to be able to do
the the right side doesn't do as well you could probably get a more a little bit more extension
with that right leg and pull back a little bit better he kind of goes straight down with there
with that right leg and now extension that left and does a good job pulling back and getting his
body back underneath them you probably lands with this foot out a little bit in front of up there
with that it's also all actor he started kind of decelerating but now we're gonna get into what's
really most most critical here which is you know notice how when he's pushing off how he pushes
off he gets full extension see how gets to that that full triple extension within his legs as he's
running now his body's kind of used to that and it's a good distribution of course which is why
you know you were always promoting that triple extension he does the same thing here where he
gets into that triple extension with off that right leg boom boom gets all the way through on
that one then comes back to this left one here and first is how he adjust his spine right so here he
has the same kind of spine angle he has really good strong core all the way through you know
he's running through he feels strong now on this one he goes and starts to look up kind of releases
that core a little bit and then when he pushes out with this left leg he doesn't get as much of
a as strong of a push off so he never gets back into that triple extension which is where it all
kind of goes down so now he keeps that leg kind of locked in and now it's when you could even
see where he reacts where he's kind of like oh that that hurt there because as he's pushing off
he's really not maintaining those same mechanics so what the point of the the post is is let's go
in and see you know what what's making you what's making this this problem happened essentially what
it is is he never got to release or fully extend within that hamstring which then you know made
it so it stayed stayed tight they'd compressed and then that's what what caused the strain is
that you would want to get into that your muscle wants to get all the way into that extension well
also he loss of the full core stabilization the full hip stabilization because that's what the
core does is it it stabilizes the hips keeps it locked in so first he looked up and he lost the
control there and then he also didn't get in a full extension within the knee which were the
two combinations what made it so key and messing up that that that left hamstring there so just
to just really break down and really see you know what what is the cause there I mean it's
not anything that you know it definitely could have been been prevented and and I hope repair
that that he actually is able to see this videos and he knows you know going forward what would be
good strategy and deceleration which would really be keeping core control and starting to slow down
the legs rather than trying to rather than losing core control first and then trying to slow down
after that right so when we're going into any type of acceleration deceleration we really want
to do a good job of controlling our our overall core strength okay and you can see to the ends
of going after and kind of you know limping with that left hamstring so that would be what to work
on with with peri now we got Dante Jackson same type of thing here I mean does an excellent job
of getting those knees all the way up gets that extension or you can see how good he pushes off
the ground he gets a lot of air time there extends that leg pulls his foot underneath them and really
has some excellent mechanics mean look at how well he gets that foot up and drives back I mean he
Dante Jackson actually ran track at LSU so he's really really a fast guy which is you know what
what ends up you know making it a big difference when it goes to the NFL so but let's get into
what's happening here so same type of thing it's the same way when watch when he's pushing off here
off when he's done his left leg he pushes he gets into that extension he drives that foot right back
up as he's running now as he goes into and you'll be able to see the same the same different I mean
look at that excellent triple extension within the hip driving that heel right up back to the
butt but now on this left side as he's going instead of getting that that he'll drive notice
how he keeps that foot way back behind him there and just allows it to Thole extend so what perry
did was he tried to hold the hamstring to flex for too long a period of time well while the the sorry
about that well the what Dante Jackson did was he went and he extended too much and kept that
extension so he over stretch that hamstring and that's what made it can get the the injury right
so you could see probably right after a try after Atlanta goes into this big extension here let's
that leg get sucked back behind him that's where you know he ends up kind of coming up and feeling
it there which he probably immediately was kind of like ah crap I'd you know I know I know that
or I felt it you know I know maybe even knows what he what he kind of did there so what needs to be
really the emphasis on is you know when you're after your get done with your acceleration and
I said this before what you need to do is you need to maintain core stabilization then try
to you know keep those feet underneath you as you're going through deceleration you don't want
to become to wax and you're in your deceleration phase so especially all the guys that are running
you know like the 60 meters obviously 40 40 yard - hundred meter - after you you get done with the
race you don't want to just kind of let that core extend raise up with the with the shoulders raise
up with the spine and make that your deceleration phase instead what you really want to try to do is
lower that center of gravity keep that core locked on and that will make it so you can help resist
any type of hamstring problems you know after sprinting at high speeds and also even hamstring
problems as you're trying to you know decelerate get out of a cut if you're a football player
soccer player make sure you're really dropping those hips bending those knees and then able to
to move side to side from there rather than again raising up with spine that's when a lot of times
you end up having any type of hamstring problem is when you raise up with the spine don't have
great range of motion there so as always guys thanks for watching these videos you want to
help you on the injury prevention side as well as the overall performance side so this should
give some clarity into the prevention side if you have any questions about our online program go and
check that out we help you develop more speed and then a lot of times more importantly help you stay
healthy stay make it so your injury free which is going to be very really really important we want
to be able to assess your injury risk and be able to help you get through them before it actually
causes a a significant problem so a lot of a lot of value there you can also check out our ebook
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program go ahead and log on to or you can click the link below or you can send me an email at
morey@yourperformancelab.com as always thanks for watch the video and we will see you soon