Tennis is a sport with ancient origins (some even date back to the Middle Ages), is also a very popular sport (and even much later) worldwide and in our country is the fourth largest number of practicing sport (it is preceded, in order, football, volleyball and basketball).
Tennis matches can be seen opposite two players (one on one, meeting singles) or four (two against two, doubles match). The court is practiced in a field divided in half by network challengers, placed in their own half. They are fitted with a paddle with which they must hit a ball. The aim of the game is to hit the ball in the court directing opponent trying to make sure that the challenger (or challengers in the case of a double’s match) is (are) able to retort or, in case of riveted, to force (force) to commit a foul.
Organizations managing the game of tennis at the international level are the ITF (International Tennis Federation or the organization whose members include more than 200 tennis clubs nationwide), the ATP Tour and the WTA Tour ITF manages the major events in tennis matches teams in the world (Davis Cup for men, for women and Fed Cup Hopman Cup for mixed teams) as well as the four Grand Slam tournaments, namely the so-called Australian Open, the French Open (Roland Garros tournament better known as) , Wimbledon and the U.S. Open. The ATP Tour (for men) and the WTA Tour (women) control instead most of the high-level professional tournaments.
Tennis ball and racket.
The golf game – The tennis court is a rectangle whose size varies depending on whether you play a singles match or a doubles match in the first case the measurements are 23.77 meters long and 8.23 meters wide in the second case the width is 10.97 meters while the length remains unchanged. As mentioned above the field is divided by a net suspended from a rope or a metal cable, the height of the net is slightly less than one meter (914 mm).
The lines that are located on the bottom of the playing field are called bottom lines, while those on the sides are called side lines. On the field, there are also two lines, known as bar lines, drawn between the side lines of the singular and located 6.4 m from the network by each of the two parts of the field. The tennis court can be dirt, grass, concrete or plastic.
The ball – The tennis ball is a rubber ball covered with a layer of felt, there are several types whose diameter is generally between 6.54 and 6.86 cm, the exception balls ” lens “, which are a bit larger (diameter from 7 to 7.30 cm). The weight of a ball is slightly less than 60 g.
The racket – Over time the tennis racket has undergone several transformations, the current ones are characterized by their remarkable lightness and strength. The technical requirements for the racquets are covered by the regulation of the various national organization’s tennis players.
An assessment Healthy.
Tennis is a wonderful sport, and many friends of the site ask us to deepen the assessment Healthy. To do this it is necessary to define a set of variables that characterize the utility of this sport for our health, because, as for football, and unlike running, cycling or swimming, do not practice it often enough and hard because both health-conscious a good choice.
The frequency – The availability of the field and the opponent can severely limit a decent workout plan; any sport acceptable health-conscious cannot be practiced in flashes.
The level of play – If it is low, it is very difficult to serve in some way because you spend 70% of the time to pick up the balls.
