Emg Analysis Of Lying In Different Positions And Different Load For The Muscles

Strength training is a necessary means to increase muscle strength, it is important to decide upon a physical element of the performance, so the scientific training methods have become the core of muscle strength training, and by academics and sports teams attention.Training exercise on the bench, which mainly develop muscle strength, how is muscle synergy force, under different types of muscle contraction differences between the characteristics of which, exercise and even coaches who are vertical, said Commentaries. During strength training arrangements, there is no quantitative indicators load on the power to judge and evaluate training for coaches . Therefore, to determine which method most favorable to this action of muscle contraction in order to identify the most effective method of training.In this study, sEMG testing and simultaneous camera method to study the oblique, flat, three grades were lower oblique, three distance including wide, medium and narrow grip, 40% RM and 80% RM bench press load when the two main features the work of muscles and muscle coordination of law analysis, objective and accurate revelation of muscle contraction characteristics of the law, find out different positions and different load bench and specific features of the major muscles, to provide scientific training methods, so training rules to follow to find the best and most effective training actions, for sports practice, methods and means necessary.The results show that the pectoralis, deltoid toe, triceps is lying to make the initiative to promote muscle; and after the beam on the deltoid, brachioradialis muscle exercise effect was not obvious; and the different stages of grip and the load change from exercise effects on muscle are different, some significant differences. In a variety of positions, the combination of load and grip, the deltoid muscle before the beam changes a lot in the value of the maximum, that is, before the beam in the deltoid muscle in the horizontal push for the maximum stimulation ; followed by pectoralis major and Gongsan head muscle.(A)At the different stages of muscle exercise is different results. Specific differences are as follows:(1) The bits in italics: 40% RM the load of three types of grip from the bench, the training effect of each muscle are pushed from the stage better than the whereabouts of the stage; in the 80% RM the load of three grip bench press, training the muscles are pushed from the stage effects are better than the whereabouts of the stage.(2) The flat position: 40% RM from the load of three grip bench press, except after deltoid muscle bundles, brachioradialis muscle outside the training effect to other muscles are pushed from the stage better than the fate of phase; 80% RM load three types of grip from the bench, in addition to brachioradialis muscle other than the training of other muscles are pushed from the stage effects are better than the whereabouts of the stage.(3) The italic bits: 40% RM bench press load from three kinds of grips, in addition to beam after deltoid, brachioradialis muscle outside the training effect to other muscles are pushed from the stage better than the whereabouts of the stage; 80% RM load from the grip of three grip bench press, in addition to brachioradialis muscle other than the training of other muscles are pushed from the stage effects are better than the whereabouts of the stage.(B) Different grips from the different effects on different muscle exercise. With the grip distance increasing, the pectoralis major, biceps more dynamic muscle function to exercise original, contraction also significantly increased the value of electromyographic changes were also significantly increased by increasing the training stimulus; deltoid ago change the value of electromyography beam gradually weakened. From the more narrow grip, the more suitable for triceps contractions stimulated by the greater forearm extensor. Specific differences are as follows:(1) The italic bits: 40% RM bench press the load width, hold before the beam method deltoid, pectoralis major, under beam, the training of radial wrist extensor grip better than others, but narrow, hold law on the triceps, brachioradialis muscle training is better; 80% RM load bench press, biceps wide, hold training method better than other grip, while the narrow, hold method on the pectoralis major beam, triceps, deltoid toe, under the pectoralis major muscle bundle, extensor carpi radialis training is better.(2) When the flat position: 40% RM bench press the loadt, width, hold the beam method of pectoralis major, biceps, pectoralis major training under the beam was better than other grip, while the narrow, hold method, brachial triceps, deltoid anterior bundle, posterior bundle deltoid, extensor carpi radialis training is better; 80% RM bench press the load, width, hold method, biceps, pectoralis major training under the beam effect better than other grip, while the narrow beam, hold method on the pectoralis major, triceps, deltoid anterior bundle, brachioradialis muscle, extensor carpi radialis training is better.(3) The italic bits: 40% RM load bench press, wide beam, hold method under the pectoralis major, biceps training grip better than others, but narrow, hold method, triceps, pectoralis major on the beam, beam front deltoid, brachioradialis muscle, extensor carpi radialis training is better; 80% RM load bench press, biceps wide, hold training method better than other grip , while the narrow, hold other muscle training method is better.(C) The load of different effect on different muscle exercise. In this study, two kinds of load that is 40% RM and 80% RM contrast, the latter is twice the former, greater difference changes in the value of electromyography are the latter than the former, and there were significant difference P <0.05, reflecting the 80% RM load bench on the main muscle stimulation significantly greater than 40% RM,40% RM load bench push for major changes in muscle EMG value changes with the trend away from holding more concentrated, while 80 % RM load bench push for major changes in muscle EMG value changes with the grip axis exhibited greater fluctuation. Comparison of two weight showed that the relative load 80% RM, 40% RM load more suitable for lying to promote the contraction characteristics of the study is more appropriate setting of the training volume action.