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STRENGTH AND TIME PARAMETERS OF THE WEIGHTED SQUAT IN POWERLIFTING (0.73 Mb, pdf) Read
Authors:
Pyanzin Andrey Ivanovich
Kostrukov Vyacheslav Vadimovich
Kochetov Maksim Andreevich
Annotation:

To date, in powerlifting, the selection of training means is often carried out only by a “collective opinion” and recommendations of experts on the advisability of their use.

The research purpose is to highlight the specific manifestations of strength and time parameters of movements in qualified powerlifters when performing different variants of a squat with weights.

Methods and organization of the research: literature analysis, tenzodynamometry, methods of mathematical statistics. The experimental research base is the sports school named after the Olympic champion V. Sokolov, Cheboksary. Testing of subjects was carried out in April 2022. The number of subjects included 9 powerlifters (1 category - Candidate for Master of Sports). The subjects performed three types of squats: with a barbell on the shoulders, on the chest, with chains (grip on the shoulders). A total of 27 measurements were carried out.

Results and their discussion. The graphs of the average group values of the vertical component of the ground reaction in three test exercises reflect noticeable differences in the dynamics of this indicator both in strength and in time. The dynamics of the vertical component of the ground reaction has a two-peak character. If the highest maximum of the first of strength is achieved during a competitive exercise, then the front squat has it at the level of 92%, and the chain squat – 74%. The biggest difference between the first and second strength peaks was noted in the competitive squat, in the front squat it is 76% of the competitive squat, and in the chain squat - only 16%. The time between the start of the lift and the achievement of the first strength peak in all three exercises is approximately the same. More noticeable are the differences in time between the first and second strength peaks when lifting, as well as between the first strength peak when lifting and the end of lifting. Here, the longest duration was noted in the competitive squat, and the shortest - in the front squat. The duration of these phases of motor action when using chains differs from the competitive squat to a lesser extent, but the differences are also statistically significant.

Conclusion. As a result of the comparative analysis of the strength and time parameters of motor actions, specific features were revealed that reflect the place of each exercise in the hierarchy of training means. The study of these characteristics, covering a wider range of training exercises, will allow for a more accurate assessment of their training potential.

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