THE COMPLEX ANALYSIS OF BIOMECHANICAL INDICATORS OF CHEST PRESS COMPETITIVE EXERCISE AT ATHLETES OF VARIOUS QUALIFICATIONS WITH DAMAGE OF THE MUSCULOSKELETAL DEVICE
In the previous researches, the algorithm of the complex analysis of biomechanical indicators in powerlifting at athletes with damage of the musculoskeletal device (MD) was developed. Research objective now is the complex analysis of dynamics of biomechanical parameters of chest press competitive exercise at athletes of various qualifications with MD. Twenty-four athletes participated in an experiment. Kinematic (a vertical component of movement of a bar concerning the athlete's body, its speed and acceleration), and dynamic (force developed by the athlete in the field of a humeral belt and a basin) indicators at dispersal and braking of a bar were synchronously recorded, and mechanical work and its power were evaluated. Low-skilled athletes at bar dispersal have force, acceleration and speed increased, and at its braking these indicators became negative and came back to initial level. At highly skilled athletes, similar indicators were significantly higher, and time intervals decreased that provided increase in work and its power on average twice. Increase in force, acceleration and speed when overcoming force of terrestrial gravitation happens at the expense of mechanisms of intramuscular and intermuscular coordination and the sports technique. Time intervals allow quantitative estimation of studied indicators at dispersal and braking of a bar and correction of training process.