Ключевые слова: action, activity, adult, athlete, bicycle, bike, biker, blurred, business, caucasian, competition, competitive, concepts, cycle, cyclist, effort, endurance, exercise, fit, fitness, helmet, hobbies, human, ideas, indoors, lifestyles, men, motion, movement, outdoor, pedal, people, person, professional, race, rider, speed, sport, sports, sprint, sprinting, strength, sunglasses, track, training, triathlon, velocity, velodrome, wheel, young,