Ключевые слова: adult, background, banister, careful, city, concept, descending, descent, downstairs, equipment, exercise, finger, grabbing, hand, handhold, handrail, hold, hospital, interior, ladder, lean, leaning, lifestyle, man, metal, modern, people, person, rail, railing, rest, rising, safe, safeness, safety, secure, security, silver, stability, staircase, stairs, stairway, steps, street, support, transition, tunnel, upstairs, urban, walk,