Analysis: David Ferrer – Inside Out Forehand

CLICK HERE TO VIEW ANALYSIS David Ferrer Complete Movement Analysis – Inside Out Forehand

This article is the second complete movement analysis following on from the Maria Kirilenko Movement Analysis done previously.  This time I take a look at David Ferrer’s inside out Forehand. Once again I try to consider the tactical

David Ferrer

David Ferrer (Photo credit: Wikipedia)

situation/intention in the analysis as this provides some context.

The purpose of these articles is to highlight that the analysis doesn’t stop with single process and must consider all.  In addition the aim is to increase awareness of the body and it’s functions and relate to tactics and vice versa.

Consider the possibility that the effectiveness of a particular tactic may be due to a limitation in the body.

I hope you enjoy!

The Tennis Engineer

CLICK HERE TO VIEW ANALYSIS David Ferrer Complete Movement Analysis – Inside Out Forehand

 

Kyle Edmund Vs Jonny O’Mara

Alongside Andy Murray the wonderful opportunity of watching the future of British tennis in the junior boys singles presented itself at Wimbledon yesterday (Wednesday).   Truth be told I was making a beeline for court 14 where Kyle Edmund and Jonny O’Mara were 3 all first set.

Maybe at this point your expecting some kind of sledging as to why these lads are never going to make it and that they will just end up on the scrap heap.  Maybe the media might do that but not here.

U.S. Open Juniors Sunday, Sept. 4, 2011

U.S. Open Juniors Sunday, Sept. 4, 2011 (Photo credit: Wikipedia)

The tennis, in my opinion was entertaining and of a high standard.  Kyle strong, very strong off the forehand wing with an incredible amount of racket head speed available.  Coupled with a strong first serve his tactics will be simple and effective. Jonny not as powerful but when in rallies looking like he had the potential to compete and he made a go of it at least.  More that could be said of 3rd seed Zerev who pulled out with a so called shoulder problem at 4-0 down in the third.

The tennis engineer is interested in the human body and the bio-mechanics of tennis and here in lies the reason for this post.   I have been alluring to the idea that the there is some relationship between where joints sit and muscle tensions in the human body which results in imbalances and hence sub optimal output.  Where there is an imbalance the joints and muscles cannot and I really mean cannot, move through an action efficiently and effectively and there is a knock on throughout the whole system.  This may or may not be a cause of future injury but if not an injury risk there is still more possibility in producing better strokes, coping with tougher situations and executing tactics.

So I turned my attention to Jonny as it was clear in his gait there were some quirks.   Not bad at this point until he turned to face his coach who was sat in front of me.  Here is where I saw the tennis players stereotypical shoulder drop on the hitting side.  Not only that as I followed this through the system it was clear that Jonny’s left hip was also hiked higher than his right and often this is coupled with a rotation to the right (right handed).  His gait when he walked away had an obvious flexion to the hitting side also which is characteristic with the previous observations. Not at the expense of Jonny but I was delighted but the question arose in my mind of what can I do about it?

Well, nothing, at the moment.  Immediately after the match I was thinking about talking to the coach but chose against it probably for the best as a few seconds later I was surrounded by Greg Ruesedski, Martin Weston and some other guy who I recognized.  While many asked Greg for photos I called my colleague to tell him the good/bad news about the match I just seen.

So, now hypothetically want can be/needs to be done with Jonny?  Well, in my opinion and according to alot of research Jonny’s posture and joint alignment is only causing him to under perform regardless of the other traits of tennis.  His body is simply not optimal therefore his fantastic ground strokes could be BETTER! not only that he could deal with higher pace and higher levels, he could grow in confidence and he could execute his tactics effectively and more repeatedly.

So step 1 is to re educate, re engineer his body to accept the range of motion and the intended functions of the joints.  Remember, the body wasn’t designed with tennis in mind and therefore we should respect the actual function of the body and restore these defaults.  That is not to say that the tennis posture is the way it  is because it should be because it shouldn’t!

Step 2 then is then to educate the body to function properly within tennis stroke production movements.  Coupling all joint actions to the end result.  This relies on heavy input on the technical model used by the coach/coaches.

Step 3 maintain and improve.

The Tennis Engineer is not a fitness trainer or S&C coach but a tennis coach specialising inhuman  movement and the aim of the approach is to give the best chance to the player to perform at maximum!

Coming soon: The Tennis Players posture article

Please feel free to message me with questions or share this with any parties that may have interest.

I hope this asks some questions and prokes thought.

Best

The Tennis Engineer.

 

 

 

 

 

 

 

 

 

 

Analysis: Maria Kirilenko – Defensive Backhand

CLICK HERE TO VIEW ANALYSIS -> Maria Kirilenko Movement Analysis

With Maria Kirilenko doing so well at the French Open this year it seemed fitting to share this analysis of her in a defensive situation on the backhand.

Maria Kirilenko

Maria Kirilenko (Photo credit: Carine06)

As with many tennis players Maria has had a fair share of injuries and even in this image sequence she wears a knee bandage/support.  The question for me is why has her body got to this point?  Of course there will be injuries but optimizing the body to perform the actions that are required can drastically reduce the injury potential whilst maximizing the output.

Only a few minutes ago Maria called the trainer for a lower back issue in the first set of her match with Azarenka.  Commentators also mentioned that yesterday she had a shoulder issue.  Coupling this with a possible knee problem in this analysis the question inflates to whether these are isolated injuries are they in fact interlinked and the injury is just moving around the body as one is addressed?

I believe it is that later and that to truly solve Maria’s issues the body function must be considered as a global entity and that areas of limited movement and/or dysfunctional posture will impact the possibilities at other joints in the system.

This could mean, for example, that poor hip function could lead to a rotator cuff injury as the shoulder works harder to achieve the output than it needs to.

As I have eluded to in past posts all performance process (tech,tact, phys,ment) are linked and influence each other.  Therefore all must be considered in analysis although assumptions maybe made it is closer to the truth if all are considered.

CLICK HERE TO VIEW ANALYSIS -> Maria Kirilenko Movement Analysis

In the analysis I include some training exercises related to the areas that have been considered aimed at developing the patterns and enhancing performance.  It must be said that the exercises alone will serve this purpose although it is important to understand , as in the case of Maria Kirilenko, that the function of the body and the adopted postures must not carry limitations and the transmissions of forces are efficient and seamless.  I suggest and recommend that this is addressed prior to implementing any training program.

CLICK HERE TO VIEW ANALYSIS -> Maria Kirilenko Movement Analysis

 

I hope you enjoy the analysis and please contact me if you are interested further or have any questions.

Regards,

the Tennis Engineeer

CLICK HERE TO VIEW ANALYSIS -> Maria Kirilenko Movement Analysis

Creating a System – Physical Model

This post aims to give a simple overview of the considerations in a tennis related physical model.  This is not S&C or “fitness” based but links in with the previous parts of the tennis system.  S&C is a field in its own right that is out of the scope of this series but works on the premise that whatever is achieved in the gym MUST translate to the court otherwise it is all in vain.

so with that said lets consider our previous models of Tactics and Technique.  these areas are linked, of course, and one cannot happen effectively without the other.  Where I come in, is a step further, to ask the question of the functionality of the body in chasing success in the Tech/Tact model.

The logic, thus far, states that the Tactical outcome and it’s effectiveness relies on technical competency but what does technique rely on?  Good racket skills?  Footwork?  ball tracking, decision making, anticipation?  yes all of these but also we are asking the body, the complete musculo-skeletal system, to perform the action that is required.

Many coaches consider the term “bio-mechanics” and also consider developing strokes from the ground up but how many consider the actual “bio-mechanics” in terms of how forces are transmitted through the body and how the joints interact?  It is this that is missing from many sporting arenas and make life difficult for both player, coach and support staff (S&C).

The first question really is to consider whose responsibility it is for working with this area and in my opinion it is the responsibility of the coach to understand the bodies functionality, how it likes to work (optimally) and what is being asked of the body in the differing tech/tact relationship.

Now, in order to define the model one must consider each of the major joints in the body and how they interact through stroke production whilst being aware of what situation (tactically) you are dealing with.  A defensive forehand has a different bio-mechanical requirement than the “controlling” forehand and is further differing depending on the opponent  and ball characteristics.   This could get very detailed (unnecessarily) and un-practical.

Therefore, in considering the bodies functionality it makes sense to understand the general capabilities of the key joints (feet, hips/pelvis, spine) and how they link into your key tactical/technical situations.

I will be posting some analysis articles considering the complete system in the next few days (maybe today for the first one) so be sure to check those out if this has sparked interest.  Previous posts in this series can be accessed from the links below.

Please contact me with any questions and I am in the process of creating workshops for any level of coach who is interested in the bio-mechanics of tennis.   Continue to develop yours and your players tennis story!

Regards,

The Tennis Engineer,

 

Previous parts of the “Creating a System” series

Creating a System 1 – Tactical Intentions.

Creating a System 2 – Technical Model.

Creating a System 3 – Training Load.

Thought of the Day – Important Feet

well, this is in regards to our two wonderful feet and the server lack of attention to them!

how many coaches referred to “loading up from the legs” or something similar and wondered why it is difficult for some?  Now, of course there are many reasons but consider the foot for a second.  When, you flex the knee what happens to the foot?  when you hop on one foot and flex the knee what happens to the foot?

The foot flattens (or pronates) which is a way of allowing the knee to flex and subsequently load the rest of the body.  Also it loads (or stretches) the muscles required to move the foot out of this position through to full extension at the hip (the foot here has fully supinated).  Isn’t this what we as coaches want for our players when hitting ground-strokes? (or in fact any shot that requires some knee flexing).

For the thought of the day bit consider what would be the output of a players shots if they had difficulty in flattening the foot in the first place or if they had “flat” feet and therefore could not use the supination muscles effectively?

Here in lies the real key to maximum output on stokes!

Enjoy,

Questions just pop me and email!

 

 

Thought of the Day

Injuries can be caused in particular action, for example when serving or hitting a forehand.  Treatments must consider that it is this action that caused the injury and therefore has the potential to do so again.  In re distributing tensions in the body to alleviate the pain the offending action must be re integrated with new efficiency and capability.

Slipping and Sliding

With the clay court season upon us and the count down to the French Open beginning it is interesting to consider how to move on clay.  My view is that we should not encourage sliding on clay even though it is possible.  I have also heard the opposing view also that says sliding is advantageous and an effective way to move on clay.

I am not saying that there will be no sliding at all but my observations have lead me to believe that sliding is for emergencies only and that the time involved in decelerating the slide and re balancing to recover is time lost.

Watching the likes of Nadal and Ferrer on the clay it is evident that there is a preferred movement style consisting of

Rafael Nadal, Master Series Monte Carlo 2007

Rafael Nadal, Master Series Monte Carlo 2007 (Photo credit: Wikipedia)

shuffles where balance is continually maintained.  Recently, on my trip to Sanchez-Casal it was confirmed to me that moving in balance is the ideal and the one they will train for and sliding is not taught.

The physical demands of playing on clay are high with not only the style of play attacking the an/aerobic systems but also the stress on the rest of the body.  We use the vibrations generated from the foots impact with the floor to create power/force and the aim of the body is to transfer as much of this as possible, seamlessly through to impact.  The lower frictional force between the surface and the shoe causes a quest for force and in addition challenges balance with the body working harder to manage itself.

Does this increase the tension/compression in the body?  I don’t truly know but I can feel the effects of this environment on various parts of my body when training and it is tough.   This feeling suggests to me that the fluidity of movement and the transfer of forces within the actions are of up most importance in producing effect play but also in staying healthy in training.  Force leakage will be magnified and compensations will occur.

Ensure bodies are balanced and transferring force effectively, prepare the body for this and challenge it to organize itself in the most efficient manner and you will see success on the dirt.

Applying Pressure Vs. Defend/Rally/Attack

Hi All,  Firstly to those who read Tactical Movement thank you and thank you for the great feedback also.  I have written this as post publishing Tactical Movement as some interesting thoughts came up and I wanted to share this mind field with you all.  Enjoy!

Applying Pressure Vs. Defend/Rally/Attack

I am sure that many coaches have done some variation of the “defend, attack and rally” drill and the purpose of this is not to dispel its use but to offer some thoughts as to ways to make the best out of it.

I have used this exercise from a player perspective, i.e. the player who is choosing to rally, attack or defend and also where from the opponent perspective where the player considers what his/her opponent is doing.

With young players the wording and their connotations have caused me a few issues along the way.  The word attack is the primary offender as to very young players they associate this with ball speed.  Attacking tennis must be played hitting the ball faster, and in many cases causing errors and quite drastic ones at that after all the work they have put in to create this “attacking” opportunity.  Similarly defending is considered to be slower than rally and that rally is medium, again all related to ball speed.

Rally by definition is a ball that keeps the opponent in a neutral position, ideally preventing “attacking” options and also not requiring any defensive mechanisms.  This suggests that two players can rally from neutral positions and that the ability to rally from many positions on the court, providing they maintain the opponent neutral is also rally.  As the competency of rally grows we end up with professional players rallying at extremely high levels which can be perceived as attacking play but really it is rally, just they are good at it.

With younger players there is obviously a wider rally potential and that the match up of players where one player rallies the other defends or a rally ball from one player is seen as an opportunity to attack, meaning that they are not rally balls at all.

This leads me to thinking that the desire for high quality rally balls is of great importance and not from single position but from all over the court (to include rallying on the move).

Time and Space

Tennis is really a game of time and space and controlling both parameters.   These two parameters appear in varying situations.

  1. The time available for a player to manage the space in which they must move and execute
  2. The time and space required to effectively recover
  3. The effect of this on the opponent

Example

Hitting into a space causes the opponent to have to manage a distance (space) in a certain amount of time.  If the space and time is managed well by effective reaction, court coverage and selected footwork then the player will be able to execute an effective shot maintaining rally.   If not then the player must adopt defensive techniques in order to solve the problem of lack of space and time.  The player must be able to create suitable time to recover.  Depending on the management of space and time the player will be able to exploit the space and time of the opponent who will have to manage their space and time to counter.

A player will be comfortable rallying in certain situations and at a certain level and will also have a programmed view on when it is possible to attack and similarly when to defend.  However, player’s choices of these may be contrary to our views.   A player may choose to defend when in fact they could rally and hit a more effective shot given that they had or could have the physical and technical competencies to support this new tactical desire.

There are times in a game where a player will utilise varying ball speeds, spins, flights etc in order to manage their space and time and also to have some impact on the opponent’s space and time.  All degrees of these can be used in any of the three situations although some will be more desirable than others. This is where pre conceived understanding of rally, attack and defend can cause problems.

In essence a player will resort to defending when they feel it is necessary and similarly attack.  It is worth considering whether when a player resorts to defence the player could rally and that surely the player would want to rally before defend where possible.  Also in considering attacking there are more options than just increasing ball speed.

The Pressure Scale

I have thought about using a pressure scale as opposed to Attack, Rally, and Defend in order to encompass more options within play.  In an ideal rally situation both players are 50/50 in pressure and arguably at zero pressure (or the centre of the scale).  A player can apply a pressure in numerous ways by exploiting the opponent’s space and time using a variety of ball speeds, spin, flight, direction etc.

In any instance a certain amount of pressure is applied to the opponent (simply because they now have to deal with and execute their tactics).  In rally the opponent’s goal is to play a shot that keeps the opponent neutral and hence brings their pressure back to 0.  The opponent will want to manage the space and time by covering court efficiently and within the given time frame created by the oncoming ball, apply a footwork pattern to firstly execute and secondly allow recovery, play a shot that allows appropriate recovery and cover the said court again efficiently.

Both players have fluctuated up and down the pressure by applying and feeling pressure.  There has been no need to defend and no player has been able to attack?  Simply pressure has been applied and managed.

Controlling points

Through the application and management of pressure which links seamlessly to the management of space and time which is underpinned by effective tactical movement players can understand how they can control points.

Points are constructed by searching for ways to increase the application of pressure.  When serving, there is chance for the server to apply pressure from the outset.  The returner aims to neutralise and the players will be somewhere on the pressure scale post these shots.  When both players are at the back of the court players will look to construct a point by testing the opponent’s space and time and when appropriate apply more pressure.  This could be through repeated shots to a weakness, playing the ball side to side, injecting pace, using angles and a whole lot more.

This suggests an overwhelming importance to consider rallying in a wider context and also to consider the other 2 situations (attack and defend) in more holistic way.  For example a player may finish the point with a drop shot having constructed the point through consistent rallying exploiting space and time.

Quality Factor

There is of course a variety of quality in play from mini tennis through to professional levels and therefore there becomes a quality factor that at all levels must be considered. Andy Murray’s rally ball is of a much greater quality than mine and within that match (if it were to happen) I would find it difficult (maybe impossible) to rally and apply pressure against him.  Similarly my rally ball will affect certain players in the same way.  The qualify factor dictates that a player can manage the space and time well enough to execute a stroke that manages the pressure and applies a certain required pressure to the opponent.

If two players are rallying but one can maintain a higher tempo than the other, the player with the lower tempo or lack of sustainability at the higher tempo, will break first through error or opportunities to apply pressure.

I am sure we have all seen a player who can get to ever ball and get it back with seemingly low quality but the other player makes the error first.  There could be a few reasons for this.  The player with the lower quality shot is managing their time and space well, although presenting opportunity for the opponent to apply pressure.  The opponent sees this opportunity but tries to apply pressure through pace and continually increases this pace until the error appears.  This, I would consider, to not be very smart play.  The player has neglected rally and assumed the old meaning of attack, instead of applying more and more pressure through direction, controlled pace and spin etc where undoubtedly the opponent would be forced to strive for higher quality or alter tactics.

A player will want to be able to inject pace into the ball in order to reduce time for the opponent and there is a time and a place for this as is there for any other shot.  It is the point of the shot and the way the space and time is managed that will affect the outcome.

Limitation model links

My limitation model suggests that the 4 performance factors (technical, tactical, physical, mental) each limit one another, the tactical factor being the one that provides purpose for the others.

Taking the rally concept the tactical outcome would be to be able to rally over increased distances and in varying court positions under certain degrees of pressure.

The considerations that follow are

  1. To what degree can the player do this?
  2. What techniques are working and which could do with some help?
  3. Is the player covering the court?
  4. Is the footwork choice appropriate?
  5. Does the player recover effectively and to an optimal position?
  6. Does the stroke keep the opponent neutral and apply sufficient pressure?

Although there is a racket requirement to handle to sending of the ball there is also a heavy movement and footwork requirement which precedes it.  In order to rally in such a wide context a player will need a host of physical ability including applying certain movement techniques and footwork patterns to achieve the tactic.  If players are doing this well then the racket skill can be optimised.  Ideally it is all done in conjunction at the same time.

Considering this in a holistic manner to include the 4 performance factors players will understand what it is they are trying to do and also understand the progressions that you employ as a coach to improve certain areas within the whole game.

Note on Mini Tennis

This idea can be worked on within mini tennis red, orange and green and of course full ball.  The idea being that if a player can rally from behind the baseline with a sponge ball can the player rally on the move?  Can the player manage the space and time on the red court?  Can the player use a variety of shots to manage pressure and apply pressure?

I believe that a player in mini red can do these things and that this is what will effectively allow players to reach high levels.  If a player struggles to manage space and time on the red court how can you justify moving to orange?

This last part on mini tennis is to put the logic of keeping children in the stages for as long as possible in order to fully develop the skill set and understanding of the wider game.  It is possible for a player to be behind the baseline, using a variety of shots to play the game, managing space and time and looking for ways to exploit space and time of the opponent.

Thanks for reading!

Technique is Movement Skill?

Hi again,

Ok so this might be a little different but then again it might just be blatantly obvious.

I am sure we have all heard, whatever your sport that there is a technical requirement in terms of execution of an action.  I know there is in tennis and that it is something that is prominent in many tennis sessions.  Personally I believe in functional technique on the tennis court as this allows a player to explore tactical options and execute theses tactics to a high level.  I also believe that technique is redundant in isolation and that there must be a desired tactical outcome that provides context for the technique.  I also believe that this extends to movement and footwork and all round physical attributes.

The thing is that there are degrees of tactical outcome that is available as a player develops their skills and understanding.  Take for example the simple tactical of moving your opponent. One can place the ball to move the opponent using simple “bunting” technique where the ball goes in the intended direction but the technique does not affect the ball in terms of spin etc and as a result applies small pressure to the opponent.  The same tactic can be executed with vicious spin, pace etc utilising angles that will apply maximum pressure to the opponent. In addition there are all the degrees of execution in between.

All the other factors (physical, technical, mental) limit the execution of the tactic so the coach must firstly show what the final result will look like and start the player on the road to reaching it.   In this post we are concerned with technique.

Many coaches have differing views on this and also coaches from a physical background also have input into developing athletes/players.  There is a view that a player must develop the technical skills (sports specific ) early and there is the alternative view in that fundamental movement skills should be the emphasis.

Here is my thought – isn’t technical development movement skill?

to elaborate take the “shape” of a ground stroke.  A player must learn to coordinate the swing path and the kinetic chain to produce the most efficient stroke.  Moving an object in this motion such as a football will educate the body in the desired execution.  Allowing players to hop, squat, rotate etc will also stimulate the appropriate sequences that will be required to execute the strokes.  Holding the racket and re producing the strokes also helps as does movements such as arm sprials and 3D stepping/balancing exercises.   In addition there must be some receiving/sending and as a tennis coach wanting tennis players I will use throwing and catching over the net along with drop feeds to be hit progressing to feeding over the net and rallying.  All this can occur within a single session and that over the a period of weeks players can develop movement skills and tennis technique which in essence is simply the moving of the body in a set way.  Any human is capable of moving the racket in the “right” way.

Once the player has developed the basics and the coach is refining and introducing more complexity one should not forget that the movement skills will really help in the learning of new skills and dealing with greater complexities.  Taking a 360 approach, including body motions, footwork, movement and racket skills (in context) players will become rounded in competency.

Good luck to all..