Were established effective special jogging exercises, close in structure to run. Coaches have to worry about the development of speed-strength athletes and soon realized that to achieve high results in sprinting is not enough "safe" speed, but it is necessary and the ability to maintain it throughout the race. Thus emerged the concept of special or high-speed, stamina, to develop a sprinter began to apply not only to run short, but at long intervals, up to 400 and 600 meters, running a series and so on. It is known that even experienced runners can not run long at maximum speed. Therefore the main task of a runner at 200 meters has always been to maintain high speeds in the widest possible section of track. One means to accomplish this task trainers rightly regarded skill athlete to relax, to escape with the least expenditure of effort. That is why even in the first 50 years of this century, American experts have considered running for 200 meters, as consisting of the starting acceleration of free running and finishing efforts. The strongest sprinters of the world now capable of overcoming the 200 meters in full force, without reducing the running speed. Running the 400 meters - this is one of the most difficult types of athletic sports, as takes place in conditions of significant oxygen deficiency. It is especially great role of special endurance sprint. There was a time when running at 400 m were classified as middle distance and tried to overcome a range of more or less uniform pace, leaving a force to the finish. 400 m was considered a kind of intermediate distance, and especially not ready for it. The main task in preparing a runner at 400 meters is the first generation of general and special endurance while maintaining high levels of speed. One of the principal means of training is re-running series on intervals of up to 600 meters.
Running on the middle and long distance.