Taekwondo - from the performance model, to the tatami

What are the mechanisms that allow the athlete to perform one or more bandalchagi? What allows him to manage three rounds while maintaining a good technical quality and expression of power?
And when do we do "tubs"? Round trip the entire length of the tatami, dubandalsan, dolyochagi or any other technique...Why do I do it? Sure, the technique but physiologically, what am I working on? What type of stress am I administering to the neuromuscular system and what adaptation am I trying to stimulate? What are the motor skills of taekwondo? ...and stretching? Heating?
The manual has the aim of giving the answers to these and other questions, in informative terms, with the maximum possible simplification to provide the athlete, the aspiring technician and the technician who approaches taekwondo training, without of the minimum basic knowledge of sports physiology (a frequent condition in the initial phase of taekwondo teaching), which is essential to optimize training aimed at performance. So forgive me those who have profound knowledge of sports physiology, for the sometimes reckless simplifications; it's a way to promote your work.
Furthermore, the intention is to provide a practical and quick reference information tool for the coach of all specialties (fighting, forms, freestyle). It is a text for athletes who simply want to understand what they are doing and why, since awareness and understanding produce better results and increase the feeling between athlete and coach. The bibliography, in addition to providing information on the sources used to write the article, represents a list of reading and study suggestions to delve deeper into sports training, an extremely vast and constantly updated subject.
It is not an article that contains instructions for performing a kick, a block, a jump; it is a text that introduces the principles of training, planning and organization of sports work on the tatami and aims to allow an initial rationalization and an initial in-depth analysis of the aspects linked to the performance of taekwondo. All the arguments relating to the work on the tatami are the result of my ruminations, while everything else can be found in the texts indicated in the bibliography; I could have reported all the studies relating to the arguments proposed but it didn't seem useful to me since the manuals proposed in the bibliography collect them all and argue them as appropriate, presenting everything that is needed, in an understandable and easy-to-consult manner, unlike the papers scientific ones that need a bit of a handle.