Learn Leg Drive Technique that can Increase your Serve POWER...
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- Опубликовано: 21 янв 2022
- I'm going to show you how to add more power to your serve by having a proper leg load. This is something that everyone can do when you understand why you should be loading your back leg more in your serve. I think the drill that I'm going to show you for your leg load can add 10 - 15 more mph to your serve.
Kovacs institute. kovacsinstitute.com/
8 stage serve model -www.ncbi.nlm.nih.gov/pmc/arti...
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Loading and driving off the rear leg is important for pitchers, but even in pitching there are two different styles: "tall and fall" involving a big hip lean and less rear leg bend versus "drop and drive" with a deeper back leg load. The problem is that there are so many big servers that look like they are mostly loaded on the front leg; the rear leg drags into the pinpoint stance and stays up on the toe. So either you believe they could actually be serving even a lot bigger if they "did it right" or there is something going on that makes serving different than throwing. My theory is that the forward momentum in the pinpoint serve comes from a big hip lean and the legs primarily drive upward, which you can do off your front leg.
Thank you so much for covering this topic!!! There is way too much misinformation on the leg drive- this is refreshing. I will most definitely practice this next time I'm on court.
One of the very best instruction video on serve loading. Very well explained. I will work on it. Thanks Kevin :):)
Great tip. I didn’t realize I have been loading the wrong leg until you pointed it out.
Thanks Kevin. Great video! To the point and demonstrated nicely with your exercises.
This is very high level stuff. This is what Fed does. You can see the front foot off the ground until the swing almost.. GREAT COACH.
What an excellent explanation -
Bravo, excellent tip!
Great points Kevin
Energy efficiency is huge as it enables the player to maintain good control as well as last longer
The reduction in injury possibility is a extremely big one for me
The nuance of hip tilt is a very good catch in terms of explaining what is supposed to happen.
The throwing demonstration I am going to pinch immediately 😈
Some coaching notes for things not discussed here.
60-40 weight distribution is what supposed to happen. This is an ideal.
That being said, since >80% of recreational players predominately jump off their front foot/leg, a 60-40 split is going to have to feel like 80-20 or even 90-10 for a player to make a change.
In implementing this coaching methodology, it is important not to lose the role of the front foot, which is to produce good verticality in the leg drive. If you coach this often, you will experience players have a tendency to swing too much onto the back foot, and then forget to use the front foot, which results in balls going into the net a lot or not as much spin and the player is not contacting on the way UP ⬆⬆⬆ before the peak of their jump but contacting on the way down or worse not really getting up at all.
Probably the other thing to note that this is a radical change for most people in their timing and rhythm of their serve and takes a concerted effort to implement properly.
On the last 2 points I'm not holding this against you Kevin. The video will get too long when you start to get into the nuances.
One final note, Kevin you have inadvertently discovered a test for a poor throwing action (pronation, internal rotation) if a students front foot throw is the same as their back foot throw.
P.S.
I really wish the Fuzzy Yellow Balls Forum was still alive. I was posting about this in that forum in 2008
The ITF used to have quite a few good articles on mechanics back in the naughties, but now its all hidden behind pay walls or completely disappeared from the internet. 😿
What a fantastic lesson sir.. I tried it today and it felt soo good. My serve has changed overnight. Also most so called coaches avoid explaining this particular aspect which is kinda strange. I straightaway felt the connection between my back leg loafing up and the serving hand exactly just like you explained..i was loading off the front foot and landing on my front foot for years which was taking a roll on my knee and now I am able to generate raw power! But a lot of shadow practice is required to condition the mind to do it subconsciously.. Thanks a lot 🙏🙏🙏
Thank you! I needed this bad
great channel. wish I could play like I used to but have some injuries. still enjoy learning even though not likely gonna use the techniques.
This is excellent thank you
Very insightful.
While getting back leg load is a good thing, how much load varies with the type of server. Momentum servers like Kyrgios tend to load the back leg a bit less. He has incredible timing that allows him to get the most out of his load. Most people as you’ve noted will get the best results from focusing on getting a good back leg load, however it is important to not overdo it and get stuck at the bottom of the knee bend. Very few people can drive effectively out of a Sam Groth type knee bend.
It’s a shame this is not viewed as much as Intuitive’s back foot video. He is wrong you are right.
Kevin, I find that it helps my load whenever I think about very slightly lifting my front foot off the ground by the time I've completed my take-back...to the point where I can feel the increased tension in my rear quad while still maintaining my balance.
6:24 to 6:34 great overview/comparison of front leg vs rear leg loading.
You’re an AMAZING coach. Period!
Good coaching 👌
Great video! It made me think about pitching in baseball - a pitcher always pitches pushing off of their back leg, and that's where a ton of the power comes from. Of course there's a difference between the mechanics of a pitch and a serve which is what makes it seem less intuitive in tennis, but it makes sense that your back leg would give more power overall if you can learn to use it well.
Please rethink this. You might be making a mistake. All slow motion videos seem to show everybody leaning into the court with most of the weight on the front foot. Pinpoint servers seem to be able to push off with both but platform servers don’t seem to be getting much off the back if any. Look at slow motions of Djokovic. Tsitsipas is a platform server that look like he might be getting some of the back. Please rethink. Controversy on this one. With platform it would be right then left which might present a problem to the physics.
Correct, even Federer, Becker, Roddick, Sampras in slow motion it’s evident in their knee bend there’s more weight on the front foot
Kevin I think we are confusing between loading and pushing. At the trophy phase your body load (aka center of mass) is definitely on your front leg. However we push mainly by the back leg to trigger the kinetic chain like you described on the video and the front leg helped out a bit (maybe 80-20). My idea is that the back leg gives you kinetic chain and the front leg gives you forward momentum. And both contribute to your serve.
great video..more videos for the interesting tip of 6.32 ( hip)
Poderia fazer mais vídeos sobre saque (serve) , kick e slice!! Please!! 🙌🏻
Synchronized the pressure that each foot is exerting on a sensory at the instant the leg drive begins. This would be a really cool myth buster episode.
Just like there are platform and pinpoint stances, there are rear leg and front leg loaders. If you watch a djokovic serve slow motion video you will see that he doesn’t load his back leg more than the front. To the contrary, most of his weight seems to be on the front leg.
I think you can load the back on a platform stance if the toss is behind the baseline like an extreme kick serve toss. If the toss is into the court then it seems like most of the weight in on the front leg. Therefore, it seems like most of the drive is from the front leg.
Thank you
This makes sense. If you load your back leg for your groundstrokes, why shouldn't you do the same for your serve?
thank you
Momentum is shifting forward on the serve even as you are coiling. The weight shifts forward to a tipping point where you would fall over if you didn't hop or drive to catch yourself. Most of the thrust forward and up comes from the back leg. This is why it leaves the ground first. The front leg serves as a stop of that forward momentum and to keep you from falling on your face. If you time it right, you can actually feel the additional impetus to the racket head in that fall- catching hop.
I've read a LOT on the serve but this little paragraph is really on point. Added to my notes!
Good work
Very similar to the golf swing though in tennis would you recommend putting weight in your trail heel or forefoot in trophy position?
Very similar to the golf swing for power. Though in tennis you're not supposed to put your weight on your heel in trophy right?
Very good lesson! I ve noticed that too! That my right leg is coneted to my right arm! I use this approach in the serve too! Majority of the coaches say that in the serve you must drive with two legs focusing on the front foot. However, in my case, the power comes more naturally if I focus on generating the power from the back leg. I mainly use the front foot for balance and support, especially because it is more natural for me and puts less stress on my left foot that I injured my ankle years ago.
Kevin, great video. I realized that loading on the same side as your dominant arm is the key. That's why I switched to the platform stance. When I used the pinpoint, I couldn't get my weight on my back leg. 80% of my weight was on the my left leg and it was just not a great feeling especially on my knees. I believe you could transfer your weight to your back leg on pinpoint but this requires that you wait to gather yourself and explode upwards. Which really means a very high toss and then you lose your forward momentum. This completely nullifies the advantage of the pinpoint in the first place.
Great topic! Not sure why the 60/40 weight distribution on back leg is so controversial.
It feels quite natural with the platform stance. Cannot speak to the pinpoint stance as I've never used pinpoint. Have always used platform and the weight distribution at trophy has felt about 50/50. This 60/40 approach is a relatively minor modification that could yield significant results as Kevin personally attests... Rick Macci describes it as loading the back leg and throwing the right hip into the court.
great explanation - how about the placement of the toss? It makes me almost feel like the placement should not be inside the court, but rather on top of my head...
That depends on the type of serve you are looking to use
Good video but my question is if a player gets into the classic trophy position loading his legs properly how does a person avoid automatically loading the back leg?
If everything else is being done properly the body has no other choice.
Great Video. I've been asking this question for a long time. Thanks for explanation.
Then what about ATP pros who dont load on their back leg? You can see some players like Medvedev or Kyrgios barely have their back leg touching the ground.
If you bring your feet together in a pinpoint then it seems like it’s possible. When I look at Zeverev it looks like he is getting some leg drive from the back foot but I would think that it’s less than 50%. It would be nice to prove this with another source besides Dr. Kovacs. For the platform serve In the trophy pose when the servers head is at the lowest point and before the leg drive. It sure looks like most of the weight is on the front foot. Not sure this proves my point but maybe it does.
Such similar concepts as throwing a football/baseball
Not sure about this, I’m really conflicted with all the different opinions on it…I’ve been watching Kovacs videos but when you watch every server in history in slow motion, their weight appears more on the front foot in their knee bend regardless of stance..the right hip is loaded from their coiling but they all have both heels up and more weight over the front foot it looks…I would’ve thought 60/40 in favour of front leg by how it looks but I haven’t done the studies, just looking at what it actually looks like and what I feel but I have a pin point stance. I think people trying to load the back leg think ‘Put all my weight on back leg’ which is wrong and impossible…it’s more even than people think
nice controversial topic explanation... problem is when you focus on pushing off the hind leg causes the motion to be disjointed. how to you push of hind leg without thinking about it?
like a shot putter?
Platform distributes balance equally. The torso torque-shoulder dip loads the rear foot. Facing more square to the net greatly facilitates this. Ref. Becker the most biomechanically perfect server.
but most atp big servers, load on the front foot ..😢
Kevin. Please go back to this theory again. I think you could possible use the weigh transfer golf equipment at Cedar Ridge and have some local college players hit serves. I think an a impulse
I think an Impulse curve over time starting at the instant the leg drive begins until liftoff of both feet might help analyze the theory. The area under this curve might be the answerer The impulse curve is force on the Y and Time on the X. The difficulty’s might be there is a direction component that might get lost and may the weight of the person should be removed that might not be possible. Also Nikola Arabic is contradicting your claim but I think he’s wrong also. I think there is significant back foot leg drive from pinpoint but less than 50%. The is probably much less than 50% from platform. Another point is that when the back foot lifts off the impulse continues on the front foot. Maybe it’s small but maybe not. Please please please try to prove this. The head golf pro at Cedar Ridge would probably be happy to help you. I believed everting you ever said but this one sounds wrong.
Its difficult to hit flat serves and the ball doesnt skid,instead it jumps up...thats my experience..
5:00
It confuses me - does it contradict this ruclips.net/video/Lomfb5AcsK0/видео.html I find it hard to hit a toss that’s inside the court
I'd say no as Nick often uses oversimplified examples. Let's just say it like this, during your tossing action you should already be in a balanced position without having to shift your weight or balance while the tossing action happens.
Based on this your tossing action should happen while you're already somewhat loaded on your back leg and by the time is completed you're already "fully" loaded on your back leg.
For me specifically, I like to feel like if all my weight and loading is happening on my back foot which seems to work for me lol
External rotation not internal
hate correcting ppl in general, but why not lol.. his name is pronounced "Kovach"
Then Don't.
Most important is placement. Everybody wants to hit just harder. Nonsense.
Consistency beats both.
feet together or separate?