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VIBRATION LOADING IN HIGH-SPEED WINTER SPORTS (ALPINE SKIING, SKI-CROSS, BOBSLED)

A. A. LUBYAKO, YU. S. TOLSTOV, A. G. RUSIYA, E. M. SOLOVYOVA RESEARCH CENTER FOR HEALTH RESORT TREATMENT AND REHABILITATION OF FEDERAL MEDICAL-BIOLOGICAL AGENCY OF RUSSIA, SOCHI, RUSSIA
Research of frequency of mechanical fluctuations and physical activity of alpine skiers, ski-cross skiers and bobsledders showed that an overload on the route can reach 15g with a frequency of mechanical vibration up to 50 Hz. Their strict linear dependence on the speed of movement on the route is thus established. On the basis of the conducted research the conclusion is drawn that vibration loading makes powerful, if not the main, part of extreme physical impact on an organism of the professional athlete, who is engaged in mountain skiing, ski-cross and bobsled. It is claimed also that vibrationsduring high physical activities can be can cause of vibration illness, affecting the urinogenital sphere, knee joints, a backbone, muscles of a shin and a hip.
Keywords: 
mountain skis, ski-cross, bobsleigh, bobsled, overloads and mechanical fluctuations, vibration illness.