Ключевые слова: activity, artificial leg, artificial limb, athlete, athletic, cardio, caucasian, disability, disabled, equipment, exercise, exercise bicycle, exercise bike, fit, fitness, gym, handicapped, indoor, leg, limb, male, man, mechanical, muscles, muscular, people, person, physical impairment, prosthesis, prosthetic, side view, spinning bike, sport, sporting, sportive, sportsman, sporty, stationary bicycle, technology, training, working out, workout, young, youth,