This multiple case study relates to the field of sport psychology describing coach's tasks and skills. Good communication skills contribute to performance enhancement, personal growth, and good interpersonal relationship and also to positive training and motivational climate. The aim of this multiple case study is to use the Video Interaction Training method for working with coaches in order to develop their communication skills and consequently evaluate utility of this method. This study helps to increase the number of Video Interaction Training application areas and shows the direction how it is possible to educate coaches and improve their skills. Key words: Video Interaction Training, intervention, coach's skills, interaction

Title of thesis: Coaching activity in the volleyball training process for the young players category Aim of thesis: The aim of thesis is to find out, describe and evaluate volleyball coaching activity in the training process and during the match at young players category Method: To fulfill the research objectives, I used the method of interrogation using non-standardized questionnaire with closed, semi-opened and opened questions. The obtained data from the questionnaire were analyzed by the sum of the number of probands and their answers. The results were processed by conventional statistical methods, expressed in words, tables and graphs. Results: The results of the thesis showed both the opinions of the coaches, but above all their coaching practices or methods, which they apply during training process. In some cases it is difficult to determine whether the procerures are correct or not, but there are cases whet i tis obvious. We partially touched the problem of early specialization in young players category. Keywords: Volleyball Training of children and youth in volleyball Specialization of player's functions Coach's activities and character Player's character