The ability of the diver
to control the psychological activity under water is quite important for
the protection of his life and health. That is why one must have a good
psychological preparation to ensure his or her psychological alertness.
A diver's psychological alertness is determined by the status of his own
cognitive abilities – the qualities of the attention, perception, thought,
memory, and prediction of deeds and situations. Here are various methods
to train one's psychological alertness.
Regulation of Muscular Tension
conscious loosening of the muscles, the neuro-psychological tension decreases
considerably. The muscles of the arms, the back, the legs and those of
face are gradually slackened one by one. The loosening should be done 2
to 3 times for about five minutes.
Regulation of Breathing
It is necessary to decrease
the frequency of breathing and increase the duration of exhaling. After
inhaling, the air is held in the lungs for a few seconds and then is slowly
exhaled. This exercise should be done 10 to 12 times.
Idea-motor exercises are
used when a beginner learns how to work with set number 2. The possible
actions in a situation, story or instruction are mentally “done”. The effectiveness
of the idea-motor training depends on the ability of the student to concentrate,
and also on the clearness and the completeness of notions – the elements
of movement, succession, co-operation, etc.
By means of psycho-physical
relaxation, the tension before entering the water can be removed
and physiological functions can be mobilized. Quick wittedness and concentration
of thought are obtained by cautious guidance. The physiological mechanisms
are based on the effect of speech on the muscular and other systems in
the organism. The conscious regulation of the muscular tension and the
effect of the paradoxical phase in the brain cortex are reduced.
The relaxation is performed
with closed eyes and relaxed body. The muscles of the limbs and the torso
are slackened. Consequently, a notion of heaviness, calm breathing, rhythmic
pulse, warmth of body, and coolness of the forehead are triggered. Relaxation
takes 5 to 20 minutes.