Ключевые слова: 20s, 30s, athlete, ball, caucasian, challenge, coach, competition, competitive sport, concentration, court, determination, female, holding, indoors, instructions, instructor, male, man, mid adult, millennial, mixedrace, net, playing, practicing, professional sport, sport, sports activity, sports clothing, sports event, sports team, sports training, sports venue, sportsperson, standing, team sport, teamwork, togetherness, volleyball, volleyball competition, volleyball net, woman, young adult,