Barbell club in the west, our principle is: "first try, and then find out its principles." I feel this is the right way to train. If you spend all your time for thinking about what method works and what does not work, you may miss the opportunity. As Nike's slogan said: just do it! If it is effective, well, then find out its principles. If it is invalid, ah, this is a kind of harvest.
   We spent 5 years to find the swing chain and the elastic mechanism with an effect. We have the power velocity curve and power curve of a number of individual studies. We have consulted Dr. Mel Siff, who, reading the Roman, Zatsiorsiky, Bompa and others works. After years of study, discussion, training, the following is my gain.
    Zatsiorsiky resistance to the definition of friendship is a special method used throughout the action and not just to provide a specific point on the resistance. Because the action of a number of joint angle and speed, the power of movement in a particular joint angle will be reduced. For example, in the barbell squat, you may be able to one quarter of squatting 500 pounds, but only your full squatting 300 pounds. Another common example is the standard barbell curl. The beginning is far greater than the power of the power of action vertices. Max Herz began in 1900, about trying to solve this problem, he invented the cam. Use the cam curve of the machine can be provided under the power of resistance.

Author: River supernatural power chain Co., Ltd
website: www.shenlichain.com
main product: swing chain、iron chain