Ключевые слова: 2018, active, activity, arena, athlete, ball, body, bulgaria, competition, competitive, concentration, cup, fast, fivb, flexibility, game, goal, group, international, jump, league, male, man, men, motion, nations, net, performance, player, playing, professional, serbia, sofia, sport, sports, strength, strong, team, team play, teams, tournament, volley, volleyball, volleyball nations league, win, world,