Ключевые слова: 60s, activity, american, athlete, ball, caucasian, competition, court, elderly, energy, equipment, european, exercise, french, game, german, hobby, learning, leisure, lifestyle, male, man, match, mature, motion, movement, net, ordinary, outdoors, pensioner, play, player, practicing, racket, racquet, recreation, retired, s3niorlife, senior, sport, sportive, sportsman, sportswear, teen, tennis, tournament, training,