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The Study on the Comparison of Muscle Function Performance of Pull-down and Pull-up Movement on Different Fixed Conditions

Author: LiuYongZai
Tutor: LuoDongMei
School: Beijing Sport University
Course: Human Movement Science
Keywords: Working conditions Surface electromyography Sitting drop - down Chin-up Grip distance Load
CLC: G804.2
Type: Master's thesis
Year: 2010
Downloads: 114
Quote: 0
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Abstract

Force in each sport based on scientific strength training, has been the concern of coaches, athletes and sports researchers. At present, foreign strength training to explore more from the combination of strength training exercise, muscle morphological factors, the muscles working conditions and the nature of the different names similar to the study and exploration of the differences in the structure of motor development muscle very rare. In addition, as elaborated in the various types of Human Movement Science Teaching Materials muscle movement effect is mainly due to the palpable touch of the living body, the body of anatomical single muscle electrical stimulation and paralysis of certain muscles function loss projection results and very general description. In this paper, the actual strength training needs of two sitting drop-down and pull-up strength training routine action, for example, 15 of the Beijing Sports University bodybuilding professional subjects different loads and grip from the pulling action test anatomical analysis of the technical action principle, the use of the means of sEMG analysis, the same under different operating conditions mover muscles EMG time domain, the discharge timing indicators for analysis. The major findings are as follows: (1) at different fixed under the conditions of muscles its degree of importance, the closer the fixed point is more obvious. Prompt seated drop-down focus exercise stretch shoulder muscles; chin-up-on exercises elbow muscles. (2) motor unit to raise the absolute number and relative proportions of the working conditions, the action of the concentric and eccentric session showed far fixed operating conditions relatively large. Tip relatively consistent small load, chin-up training is better than sitting drop-down. (3) grip distance increases, the large difference appears under different operating conditions can be more muscle; the load increases, less impact on the operating characteristics of the muscle under different working conditions. Get the best training effect, but if by the grip distance increases should be chin-up; pulling action can be selected depend on the increasing load. (4) the discharge timing of the muscle under the conditions of different fixed having large individual differences; the smaller influence the grip distance change of the discharge timing, the influence of load changes on the discharge timing. Tip chin-up or drop-down posture training effect of the same action, the increased load better than the grip from the increase.

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