Tennis Elbow

Currently, many tennis players have that nagging pain in the elbow during training. Studies show that the elbow injury is one of the most prevalent among those practicing tennis players mostly aged between 41 and 60 years.^1.

This referred pain may be a warning. There are high chances of you being with "Tennis Elbow" , the famous elbow pain. Tennis Elbow has the most appropriate name "lateral humeral epicondylitis", and is characterized by inflammation of the tendons of the muscles that are located on the back of the hand and forearm, which fall at the end of the arm bone called the lateral epicondyle ( figure 1).

                                                 Figure 1

Often, their presence is associated with repetitive and mostly inadequate technique a few hits. Improper movement that generates the elbow injury is almost always the backhand, especially as performed with one hand. This scam involves the movement of wrist extension, and strong muscle contraction in the posterior region of the hand and forearm, and resulting in localized inflammation ( Figure 2 ) .

                                          Figure 2

                                                                     www.discountmedicalsupplies.com

The main complaints are pain in Elbow Tennis (outdoor) lateral elbow and extensor muscle of the forearm region. With the onset of pain , some measures must be taken to neutralize and subsequently cure the inflammatory process:

• 1° Home: First, you should stop playing for a few weeks and looking for a specialist in the area (orthopedic) so that it can pass the necessary recommendations.

• 2° Muscle Strengthening: After medical clearance, look for a rehabilitation center with trained professionals to help you strengthen all the muscles of the arm, protecting against possible injury.

• 3° Suitable materials: preferably oversizes for rackets, those with the head higher than the conventional racket because they more easily drive the ball to the other side, reducing the burden on the arm. Also, consider using strings with lower than conventional voltage. This type of stringing deforms over the ropes at the time of impact , reducing the effort at the time of the hit, which in turn reduces arm strain.

A very important point is to be strengthened "stop" playing when notice any pain in the elbow region. I see many players playing, even early in the inflammatory process, and only stop playing when the pain is too great. This leads to a very large inflammatory process, take several months for recovery .

So do not forget, when you notice a dull pain in the elbow area, stop playing and consult a medical expert to give all necessary guidelines.

More information

Email: jefferson.jcc@hotmail.com

References

1. JM Guedes . Injuries in competitive tennis players . Rev. Bras . Cienc . Sport. 2010:31(3):217-229 .

Change in direction of base blows

When watching tennis matches among practitioners of the sport, especially beginners, I realize that there is much indecision by them at the time of driving the ball into the opponent's court. They bounce cross and parallel balls without any criteria. The right choice to direct the balls in parallel or cross has a very important value in the outcome of a match. There are some criteria for the correct choice, such as: What is the hit probability of a coup in parallel and cross? What is the purpose in directing the ball to such a place?

Initially, the height will comment on the network. The network is highest at the ends (107,0) in the center and lowest (91.4 cm). Thus, the ball directed towards the cross undergoes a lower network, increasing the margin of accuracy in relation to the parallel, which involves a higher network (figure 1)

Figura 1

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Now, when you play against your partner pay attention to the path that the ball is up the other side of the court. Compared with the parallel, directed the ball to cross takes a longer route to reach the opponent's home field line. With this, the ball has more time to fall and therefore bouncing inside the court. Therefore, considering probability of hit, the ball is directed to cross over safely (Figure 2)

Figura 2

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And what happens when you " delay " a scam ? When you delay a scam trying to drive to the parallel , your ball will probably leave the hall . However, when you delay a scam trying to drive cross probably your ball will fall in center court . This causes the index errors in parallel is greater every time delay a blow.

Note : The term means delayed make contact the ball behind the body.

As we can see , the probability of error are higher in parallel compared to the crusade. During a tennis match , the ball changes the back of the court , 70 % to 80 % of the balls are directed to cross . The other 20 % to 30% are directed towards parallel .

The change of direction in parallel , is usually performed when the player goes to the definition of a point or to change the direction of the ball to throw it more vulnerable opponent's blow .

This makes us think that when a blow is well conducted in parallel with quality, the chances of winning are greater point . However , many errors occur in parallel . Most of these errors are not caused by technical failure of a coup , but by a wrong decision at the time of execution of the coup . The following tips will comment on probability of success in cross and parallel .

 .

Tip 1 : When your opponent throw a deep ball, a chance to slow the ball is larger. If you choose to play on the ball in parallel , the chances of error increase even more . So , with deep balls coming from the opponent , look them in the crusade returns . When the ball comes shorter , you 'll have more time and can risk a coup in parallel .

Tip 2 : Another difficult to run the ball parallel is the low balls . Think , if the network is higher in the black ball and the opponent comes too low , the chances of error increase risk in parallel . Look pass the ball crossed and wait a ball closer to the waist line .

Therefore , the exchanges of the ball in the back court , give preference to cross balls . Look bounce these balls with good margin over the net , as will further decrease its rate of unforced errors . When you choose for the ball in parallel , wait a better ball not to give free points to your opponent.

More information

Email: jefferson.jcc@hotmail.com

Correct lifting the ball on serve

The serve is one of the toughest grounds to be performed by practitioners of tennis, and throwing the ball, commonly called by the players, is one of the most difficult movements to be performed, especially for beginners in the sport (figure 1)

                                         Figure 1                                                       www.esporte.uol.com.br

Before we talk a bit more about it , we use the word " high" in place of the word " release " since launch sounds like throwing the ball , and during the looting in " put" the ball above his head .

Building a good survey of the ball starts moving together of the members involved . Shoulder , elbow and wrist need to be stabilized . The elbow must be locked. A very common mistake made by students is elbow flexion when lifting arm . The grip must be firm , for movements with the wrist rotates the ball in the air , making the area an ideal spot on the placement of the ball . Often , that pivotal movement of the ball occurs because the student hold it with the palm of the hand , so the ball should be handled with the fingertips . Have watched it at the time that you are withdrawing your ball spins in the air ?

With total control over the ball , it's time to put it at some point. But where to direct the ball? What time playing it ? I suggest that , especially for beginners in the sport , placing the ball must be taken from the right side of the player , just ahead ( for righties ) .

                                    

Tip :

Put your racket on the ground with the handle pointing to your left foot ( for right-handers ) and the racket head pointing to the right Postinho the court. " Elevate " the ball above his head as if performing a service and try to make the ball fall on the strings of the racket . If done correctly , the ball will fall exactly on the right a little bit ahead .

Regarding the height of the ball , I suggest that the increase is made to a height that matches the maximum extension of the dominant limb ( who wields the racket ) . The ball must be at speed 0 (hang in the air ) on contact . Many players do strength and end up " throwing " the ball too high . This hinders the pace of withdrawal, plus bat a ball down .

More information :

Email : jefferson.jcc@hotmail.com

References

1.      Treuherz RM , A. Cornejo Tennis - Techniques and tactics of play, ed 1 , New York: Alaude , 2006.

Adequate control of blood pressure in hypertensive tennis players

Looking for tennis practice is growing among the population, especially for those that want to improve quality of life as well as prevent and control diseases acquired during life.

Most of the tennis practicing population has some disease and hypertension is the most prevalent. It is considered one of the main risk factors to incite cerebrovascular accident (CVA) and acute myocardial infarction (AMI).

Currently, sport treatment is one of the most non-pharmacological more recommend by doctors to monitor the disease progression. However, it is not enough to just get on the court and play, there are some basic precautions before starting the sport.

It is very important to be properly medicated. Physiologically, during tennis practice, blood pressure rises according to the intensity. As the hypertensive individuals without medication already have high blood relaxing pressure, during the exercise it will increase even more and can result in a more serious problem. Due that, if for some reason the person did not take the medicine, it is not recommended to practice tennis. Table 1 presents the diagnostic classification of blood pressure (above 18 years old) according to the V Brazilian Guidelines on Hypertension Arterial

                                  

                                    Table 1. Diagnostic classification of hypertension

                           Source: V Brazilian Guidelines of Hypertension 2006

Another important caution is with the excess inside the court, especially with very intense workouts. High intensity workouts elevate blood pressure even more  and take care is always welcome. Some precautions like avoid running into unnecessary balls that are far out of reach, stop for few minutes when the heart beats are very fast and give a breather after a very long point may help control the intensity during workouts.

For more information:

Email : Jefferson.jcc@hotmail.com

References

1. Negrão CE, Barreto AC . Exercise cardiology . Athlete of the cardiac , 3rd edition, 2011.

2 . V Brazilian Guidelines on Hypertension , 2006.

Artigo que escrevi para a Revista Tênis de novembro/2013 sobre tênis de campo e obesidade

Galera praticante de tênis de campo, mais um artigo que escrevi para a Revista Tênis sobre tênis de campo contra a obesidade. Espero que gostem!

Características das Tecnicas Foot-up e Foot-back na Realização do Saque no Tênis de Campo

      O Saque é um dos fundamentos mais decisivos no resultado final de uma partida, tanto para os jogadores amadores como para os jogadores profissionais. No entanto, da mesma maneira que o saque tem um poder enorme durante uma partida, a biomecânica do saque é a mais complexa e difícil de ser executada dentre todos os fundamentos. Por esse motivo, as equipes de treinamento têm dado cada vez mais importância ao fundamento saque.

      Um dos aspectos mais importantes do saque é a condução das pernas. É a partir dos membros inferiores que é gerado a transferência de corpo para a bola. Existem duas técnicas diferentes para a realização do saque (Figura 1)

 Figura 1:Técinica Foot-back e Foot-up.                        www.ludgerobraga.com

1.   Foot-back (pés separados): Técnica que consiste em manter a distância inicial entre os membros.
2.     Foot-up (pés juntos): técnica que consiste na aproximação entre os membros inferiores durante a execução do saque.

      Fazendo uma comparação entre as duas técnicas, quando falamos em pico de força vertical, isto é, quanto de impulso para cima o corpo pode atingir, a técnica Foot-up possui maior força vertical comparado com o a técnica Foot-back. Com isso, o ponto de contato raquete-bola do sacador será maior para a técnica Foot-up.

      Com essa característica biomecânica, podemos direcionar determinada técnica para o jogador. Jogadores com baixa estatura podem se beneficiar utilizando a técnica Foot-up. Pelo fato dessa técnica aumentar a força vertical, eles podem aumentar a altura do ponto de contato raquete-bola, conseguindo um melhor aproveitamento de saque.

        No entanto, é importante ressaltar que essas mudanças na biomecânica do saque levam algum tempo para surtir resultados. Além disso, o jogador precisa se sentir a vontade com a nova técnica. Muitos jogadores tem facilidade em realizar algumas técnicas e dificuldade em outras, devendo por na balança até que ponto essa mudança possa gerar algum benefício. Se o jogador sente-se solto e com um movimento livre a mudança com certeza é bem vinda.

         Importante frisar que essas dicas são para jogadores que já possuem bastante vivência no esporte. Jogadores iniciantes precisam trabalhar outros aspectos do saque inicialmente, principalmente a elevação da bola e o movimento coordenado de todos os seguimentos do corpo trabalho no saque.

Bom treino,

Pro° Jefferson Cabral.

Referências

1.  Neto LB, Serrão JC, Amadio AC. Estudo de características dinâmicas e cinemáticas do saque no tênis - Comparação entre duas técnicas.

Backhand com uma ou duas mãos, qual escolher?

       Quando um aluno inicia no tênis, além de aprender todos os fundamentos, é preciso escolher de que maneira quer aprender o backhand (esquerda para os destros). Existem duas formas para realizar o backhand, são elas; com uma mão ou com as duas mãos. Para ajudar na escolha, será comentado as principais vantagens e desvantagens dos dois estilos.

Backhand com uma mão: As principais vantagens desse estilo são a sensação de golpear a bola de uma forma mais “solta”, certa facilidade em golpear com slice e o maior alcance sobre a bola se for comparado com o backhand de duas mãos. Já as principais desvantagens é a falta de firmeza para devolver bolas muito rápidas, principalmente em devoluções de saque, o fato de não poder atrasar o golpe e a dificuldade em golpear bolas altas.

        Backhand com duas mãos: As principais vantagens desse estilo são a maior firmeza para rebater bolas muito rápidas, principalmente nas devoluções de saque, o auxílio da mão não dominante, ajudando principalmente a compensar quando rebater uma bola atrasada e a facilidade em golpear bolas altas. Já as principais desvantagens são a sensação de estar “preso” durante a realização do golpe por estar utilizando o braço não dominante durante a batida, certa dificuldade em golpear com slice e o menor alcance sobre a bola se for comparado com o backhand de uma mão, tendo que intensificar o trabalho de pernas para sempre estar próximo da bola.

           Como dito anteriormente, tanto o backhand com uma e duas mãos tem suas vantagens e desvantagens. Não existe um critério para a escolha de um estilo ou de outro. Penso que, o fator de maior relevância é em que estilo sente mais a vontade.

No entanto, o aluno pode seguir algumas dicas para ajudar na sua escolha. A maioria dos homens adultos escolhem o backhand com uma mão, pois quase todos sentem-se mais soltos, com o movimento mais livre durante a realização do golpe. Já as mulheres acabam tendo preferência pelo backhand de duas mãos por sentirem muito mais firmeza no momento do golpe, conseguindo gerar mais potência. Pessoas muito altas e com pouca mobilidade tem preferência pelo backhand com uma mão pela dificuldade em se movimentar pela quadra.

      Importante ressaltar que, muitos praticantes de tênis trocam de estilo com certa freqüência, não adquirindo evolução em nenhuma das formas. Procure escolher em definitivo o estilo que mais lhe agrada e acredite nele, principalmente quando estiver passando por uma fase ruim, pois é nesse momento que ocorre às mudanças de um estilo para o outro.

Bom treino,

Jefferson Cabral!

Referências

1. 1.    Ishizaki MT, Castro M. Tênis: Aprendizagem e Treinamento. 2006