Ключевые слова: active, activity, adult, aged, athlete, athletic, backhand, ball, catch, club, competitive, court, elderly, energy, fitness, forehand, full life, game, good physical shape, handsome, happy, health, healthy, hitting, hobby, leisure, lifestyle, looking, male, man, match, motion, old, outdoors, people, person, play, player, playing, process, professional, racquet, retirement, senior, sport, tennis, tennis ball, training, vitality, young at heart,