Research On The Affects About HDT Training To Archers' Electroencephalogram

Human's posture of standing upright is a remarkable mark which distinguishes from other animals. But since human beings began to upright walking, it caused quite a few disadvantages because of the force of gravity. Therefore someone put forward a proposal that people could improve their health by doing the handstand (low order head and inclined position with an angle of 90 degrees). The test target of this research is 24 in-service shooting and archery athletes. The research introduces the theories and methods about a variety of changes which human body may appear under the condition of weightlessness or stimulated weightlessness in the field of aerospace. It aims at probing into the athletes' recovery of the central function in competitive sports of shooting and archery. In this research, document search, experimentation, verbal report, questionnaire survey and mathematical statistics are adopted. The following are the results:The training of HDT can obviously improve the brain center function and the state of advanced brain function.1. In the training of HDT, the varying range of electroencephalogram index is obvious with the inclined angles between -60°and -90°. In the training of the both angles, the a frequency power rate in parts P3, P4, O1, O2 declined obviously. The change of the inclined angles and time expanding made the athletes' brain bloodstream speed slowly and also had a influence on the brain function in the parietal lobe and occipital lobe. Not being adapted to the change of body position, athletes may feel nervous and fear. It caused the frequency of brainwave to quicken and an obvious rise in frequencyβin parts F3, F4,T3, T4. Meanwhile a clear head, low energy factor, temporal lobe synchronization, frontal superiority, quiet degree, composite index, electroencephalogram (EEG) coherence function are also obviously declined. After the training of HDT, the athletes' brain indexes obviously raised compared to the state of sitting quietly before the training, especially the high wakeful degree, temporal lobe synchronization, frontal superiority and electroencephalogram (EEG) coherence function P3-P4. The research shows that the athletes' brain function recovered well. It also shows that the bigger the angular dimension of HDT is, the wider the changing range of electroencephalogram indexes is on condition that the sitting position is recovered.2. After 8-week training of HDT with the angle -90°, the athletes' SAS score, PSQI score, SCL-90 total score declined. It shows that the training can improve the sleeping, relieve the anxiety, ease the discomfort and bad mood by changing the brain bloodstream and nervous centralis function. With the training time expanding, the benign effect becomes more obvious. After the training, the brain function improved and the vegetative nervous system was adjusted better. It can help athletes get rid of the low spirit or bad mood, deal with variety of training problems and improve the ability when they face the competition pressure. It can promote the physical healthy and finally form a virtuous cycle, and make the central nervous system, vegetative nervous system, visceral system and psychological activity in good state.