Tennis is a network against the class of competitive projects, the game players take the network confrontation, running fast, running distance, which lasted a long time. Therefore, the requirements of tennis players responsive, the pace of moving fast, anxious, emergency stop, variable speed, explosive, good adaptability, and have good endurance. Tennis is an intermittent movement, consisting of a short period of time, a high intensity of continuous bout and subsequent rest periods. Tennis is a kind of aerobic, anaerobic exercise alternately to oxygen-free energy for the special ability, aerobic energy-based movement. Tennis game is characterized by strong exercise intensity, the total time is long and there is a certain intermittent period, its energy supply is characterized by the aerobic energy supply of sugar and anaerobic glycolysis for energy supply, the movement of sugar as the main energy supply, Sugar demand is greater. Therefore, the athletes before the sugar reserve is sufficient to affect the race is one of the important factors. An important means of raising the amount of sugar reserves before the match is a meal (high sugar diet). In order to maximize the storage of energy material, tennis players need to pay special attention to the food structure before the game, the scientific diet is the use of high sugar, low fat, appropriate protein, rich in vitamins and minerals. The following are the same as the " The high sugar diet of the tennis player before the game refers to the need to meet the needs of high sugar intake by increasing the intake of staple food and its variety, such as bread, bread, noodles and other pasta is preferred; High quality protein, such as fish, shrimp, eggs, milk, etc. (excellent quality, high utilization); to minimize the intake of fat, need to pay special attention to control the intake of saturated fatty acids, such as butter, animal fat, ; At the same time, in order to ensure adequate consumption of vitamins and minerals, should be fruit and vegetables as the main source, the species to be rich, vegetable cooking to be made in the form of salad, to avoid excessive cooking oil and long cooking , To avoid the destruction of vitamins. The tennis player should arrange a meal for 2-4 hours before the exercise, which can significantly increase the content of muscle glycogen and glycogen, and avoid the insulin effect caused by eating near the game. The decomposition effect of the body. The following are the same as the " In the course of tennis competition, most of the venues set out in the outdoors, the athletes in the course of the game through a lot of perspiration to regulate body temperature, which will lead to dehydration and mineral loss, so the scientific rehydration can effectively reduce the body fatigue, Energy, to prevent excessive loss of electrolyte in the body. In the course of the game fluid should be selected exercise drinks, the standard is: low permeability solution, containing energy - sugar (usually glucose, sucrose, oligosaccharides or medium chain starch, content of 4% -8%), not Containing carbon dioxide, a certain amount of vitamins and functional substances (such as taurine, etc.), with a small amount of electrolyte; rehydration temperature is best controlled at 10-17 ?, so in addition to lower body temperature function, the taste is also conducive to drinking ; The principle of rehydration is in the intermittent period of each session a small number of times to drink, to avoid a large number of rehydration of the gastrointestinal tract and cardiovascular system caused by the burden of the general amount of fluid per hour in about 800ml, according to weather conditions to adjust , The higher the temperature can be increased by adding the frequency and the appropriate increase in the number of drinking water to achieve the athlete's body fluid balance, to avoid the adverse effects of dehydration on athletic ability. At the same time during the rest can also be ingested high energy digestible energy glue, energy rods as energy supplements, the use of short rest period to quickly add energy to meet the needs of the follow-up game. The following are the same as the " The tennis game uses a cycle or knockout system, and the athlete is ready to start the next game after the end of a game. The most important part is the nutritional supplement. 30 minutes after the game, the body is very sensitive to the nutritional supplements, the absorption rate is generally higher than about 50%, and at this time most of the blood distributed in the muscles, gastrointestinal blood flow less, after a short period of time Not suitable for dietary supplement, should be replaced by the form of rehydration. Immediately after exercise to add the role is to promote the rapid recovery of the body, so at this time to restore the beverage should be selected sugar - electrolyte - protein hypertonic beverage, sugar and protein in the beverage to 4: 1 best to a small number of times for the principle, Do not drink, to protect athletes after the movement of sugar, protein and body fluid rapid recovery. (Eg white bread, oatmeal, pasta, etc.) can be selected because of the high glycemic index (GI) of the high glycemic index (GI), because of the high dietary structure of the high glycemic index (GI) GI diet has a high blood sugar and insulin response, which can quickly increase glycogen recovery. After exercise for the rapid repair of protein, need to pay attention to high-quality protein intake, such as beef sauce, eggs, fish and so on. Fruits and vegetables are the main source of minerals and vitamins, should pay attention to eating a variety of fruits and vegetables to meet the body of various vitamins and minerals needs. Tennis before the game, the middle and later nutrition, every step is essential, before the game need to reserve sufficient energy for the athletes; the game can be rehydration and other means to prevent dehydration, add energy, delay fatigue; after the game should be adopted Reasonable nutritional supplement program, so that the body quickly restored to ensure the follow-up game status. Sports nutrition is the basis for material assurance of tennis matches, requiring coaches and athletes to attach great importance.
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