The 800-meter race is a typical aerobic and anaerobic race. The requirements for aerobic energy supply and anaerobic energy supply are very high. Therefore, training should not only improve the function of the heart and circulatory system, but also enhance the ability of aerobic energy supply; It is also necessary to improve muscle working ability and enhance anaerobic energy supply ability.
The physiological function of variable speed running is firstly to increase the heart capacity and improve the heart's ability to pump blood to the circulatory system during running, so as to better provide blood for working muscles and improve aerobic metabolism, that is, to improve endurance.
The physiological function of interval running is to cause "excessive acidification" of muscle blood. In order to eliminate the influence of "over acidification" on muscle working ability, it is required to have a large amount of alkali reserves in the blood to play a neutralizing role. Athletes have the ability to better resist "over acidification" and lack of oxygen for a long time, so they improve their anaerobic energy supply ability, that is, speed endurance.
Sports candidates 800 meters training, the first stage mostly uses variable speed running training; In the second stage, variable speed running and interval running training are alternately adopted; In the third stage, interval running training is mostly used.
Extended data
Running skills
1, landing buffer
If you carefully observe other people's running, you will find that many people touch the ground with the sole of their feet and make a loud noise when they touch the ground. The correct action is that when running, the middle foot should land first, and the sole of the foot should not land. This is a kind of protection for ankles and knees to prevent periostitis.
Step 2 Shake the arm
Swing arm is to keep the balance and coordination of the body during running, so that the body swings more naturally and conforms to the rhythm of human movement. When swinging your arms, just remember not to put your elbows in front and your hands behind, and swing naturally with your steps.
3. Hold your head high and straighten your chest.
Running is to hold your head high, which is helpful to improve the respiratory and circulatory system of the human body and establish a normal memory state. Because your body constantly consumes energy during running, it is easy to get tired. At this time, if you can stand up your spine with your will, it is actually very simple for you to improve your hunchback.
Step 4 breathe
Breathing during running is profound and long. Generally speaking, you can breathe through the nose and nozzle, and you can breathe through the mouth and nozzle when your physical strength drops seriously.
5. Heart rate
Jogging, as a healthy aerobic exercise, should be distinguished from running fast. Generally speaking, the most suitable number of heart rate rhythms for physical exercise is (220- age) ×60%. You can measure the following items correctly while running.
6. Head and shoulders
Keep the head and shoulders stable. Keep your head straight forward and your chin slightly retracted, but don't bow your head. When running, relax your drooping shoulders first, then shrug your shoulders as much as possible, stop for a while, restore your original posture, and repeat.
7. Arms and hands
Hold your hands slightly, bend your arms about 90 degrees, and naturally swing back and forth. Be careful not to put your elbows on your forearms and your hands on your back arms.
8. Legs
Drive the calf with the thigh, and the knee joint should face the toes. Raise it to a reasonable height and then put it down. Repeat.
9. feet
Relax your feet and don't tighten your toes. When your feet are raised to 10 cm above the ground, you can put them down and repeat. Don't use too much force on the forefoot when the sole hits the ground, so as not to cause muscular calf.
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