2017年1月28日土曜日

Two Kinds of Different Hitting Mechanics (6)

Chapter6  ~Automatic Stride (This is NOT a no stride.)~

In chapter6, I want to write on the most basic style of the puncher-type mechanics, and I call it "automatic stride". In the experiment in chapter5 (figure1), I ordered the subject to swing directly from the loading position (frame2).          

figure1
 

Meanwhile, in the case of figure2 (movie1), the hitter tried to swing directly from the batting stance (frame1), and as a result, his front leg upped and then got down automatically.

figure2


movie1


I call this way of hitting "automatic stride", and it is definitely different from no-stride mechanics. Although it is easy to misunderstand because of being quick and short, there certainly is front foot's up and down in the automatic-stride mechanics. No-stride one is simply wrong technique, I think. See movie2, the examples of automatic-stride mechanics. 

movie2: automatic-stride hitters


Movie3 is the examples of hitters practicing the automatic stride based on my instruction. They are practicing it with the knowledge of how the mechanics works, and on that point, they are different from MLB's "wild" automatic-stride hitters in movie2. Since the "wild" ones do the automatic stride without theoretical understanding, they don't always do it ーsometimes they do no stride or leg kick.

movie3: automatic striders based on my instruction


As for system of the automatic stride, it is caused by the weight transfer due to APA. See chapter5 (figure3) again, when you tried to accelerate the bat, your lower half generated power automatically and it caused the weight transfer.

figure3 (from chapter5)
 

So, if you try to start the swing directly from the batting stance, your front leg will make a stride automatically as a result of the weight transfer due to APA. This is the system of the automatic stride. Figure4 is explaining that system.

figure4: system of automatic stride