The purpose of the invention was to develop a training device that allows acquiring sense of water immediately after workouts with it.The possible embodiment comprise an elastic or stretching material with gaseous medium between water and sportsman's palm and (or)
forearm, and at least one valve. The embodiment allows to create the artificial gaseous medium at the inner side of human hand and / or
forearm in water and to change its pressure and volume. The gaseous
medium pressure and volume are set for a sportsman to change his psychosomatic sensations and lead to changes in
mechanics and dynamics of the sportsman strokes in water.The invention with gaseous medium assists swimmer to improve his ability to sense water. If pressure of gaseous medium is properly selected there is an effect of vanishing support during execution of strokes. The effect occurs due to properties of fluent gaseous medium in elastic / stretchy material. Shape of the gaseous medium is very responsive to propulsive forces during
underwater part of a
stroke. The gaseous medium deformations by water streams / flows cause feedback to swimmer hand, arm, and brain about applied forces. Interactive
perception of water through the vanishing gas support assists swimmer to find right
mechanics and dynamics of strokes that correspond with the current factors influencing swimming. In other words the device assists in development of human physical qualities required for increase in efficiency of applying hand's (or arm's) force during
underwater part of strokes. A sportsman recalls the developed
mechanics and dynamics right after workout with the device and its doffing.