Influence of mesocycle (october) training effects at variance analysis of stabilometric indices of highly-qualified racing skiers

Objective: to estimate state of statokinetic stability (SKS) in racing skiers. Materials and methods: stabilometric platform that allows of estimating statokinetic stability of a human including vestibular, neuromuscular and psycho-physiological ones (MBN, Russia). Results: study of individual posturologic characteristics of racing skiers before and after microcycle training shows that loads influence stabilometric indices. We found out that in studied positions of head and body measurements in frontal and sagittal planes do not change considerably under the influence of applied loads of 1-4 areas of power. At that, there is decrease in pressure center (PC) speed, peak amplitude in frontal plane and statokinesiogram. Findings: meaning of stabilometric indices for localization of fatigue caused by muscular activity is to be further studied and interpreted. Use of respiratory tests with registration of PC fluctuations in different planes, PC speed and statokinesiogram area showed significant shifts of some indices: decrease in PC speed; decrease in statokinesiogram area; decrease of peak amplitude in frontal plane to a half and in sagittal plane almost to a third of initial value; increase in peak amplitudes in planes and increase in vibration frequency. According to D.V. Skvortsov (2007), balance in the main stance has more stable characteristics of amplitudes and frequencies of vibration, PC speed and statokinesiogram area.