Ключевые слова: active, adult, aging, athlete, ball, bright, caucasian, clothing, competitive, court, day, elder, equipment, exercising, fitness, focus, healthy, hobby, individual, lifestyle, lighting, male, man, motion, natural, occupation, old, one, only, outdoors, outfit, outside, person, player, playing, position, practicing, process, racket, racquet, retirement, senior, sport, stylish, sunlight, tennis, training, vitality, wear, white,