Ключевые слова: acrobatics, action, active, adolescents, adrenaline, adventure trail, athlete, baby, balancing, bika trial, bike, bike rider, biker, bmx, cross, cycling, cyclist, driver, ekstimalny, exercise, extreme, final, fitness, freeride, freestyle, helmet, hobby, jump, jumper, mountain, movement, movement trick competition, obstruction, off, outdoor, peace, ramp, recreation, risk, speed, sports road, tire wheel, track, trick riding, wheel, youth,