Kinetic link

FiveFrameSwing said:

Curious what your point is with this video. Do you view this as how the core works in the swing? Is this guy trying to whip is hips? Does he or you think that is the objective in the swing?

Click to expand...

This was used on BBD to describe the "pulse". How the core controls the swing. I thought TDS was the one who posted it, he said he wasn't, maybe it was Blue?

I don't think this happens in the swing. But like previously mentioned, looking at the definitions posted earlier, boy does seem like the way "Active Core" was defined.....

TDS said:

FP, I would lean on the serape effect which my understanding includes stretching in all the planes of motion (unified)...

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Thank you TDS. Listed below is a very brief description of the Serape Effect...

"The function of the serape
effect is to provide the muscles of
the core an optimal length-tension
environment for maximum force
production. The serape effect is
the result of the interaction of 4
pairs of muscles: the rhomboids,
the serratus anterior, the external
obliques, and the internal
obliques. "

Is it fair to say that the "core model" (not really sure what you call it) includes each of the muscle groups bolded above?

Spartans21 said:

This was used on BBD to describe the "pulse". How the core controls the swing. I thought TDS was the one who posted it, he said he wasn't, maybe it was Blue?

I don't think this happens in the swing. But like previously mentioned, looking at the definitions posted earlier, boy does seem like the way "Active Core" was defined.....

Click to expand...

Spartans,

As I have stated before, I doubt I understand the core movement pattern any better than you. Also, as stated, I am not a member of HI. I simply read on these sites with an open mind. I then swing a bat in order to 'feel' for myself. From my reading, the 'pulse' sounds a lot like the theory of Stretch-Shortening Cycles. Specifically, I would describe the 'pulse' as the "transitional period prior to the concentric contraction" mentioned below. I was a pretty hardcore weight lifter when I was in college, and similiar theories surrounding muscle activation were quite popular at that time. Maybe TDS or someone else familiar with his beliefs can confirm or deny my comments...

"What is the Stretch-Shortening Cycle (SSC)?
Athletes have been shown to jump 2-4cm higher during the countermovement jump (CMJ) than they can during the squat jump (SJ) (1). This is simply because the CMJ incorporates a pre-stretch dropping action when compared to a squat jump – which initiates the movement from a static position without the use of a pre-stretch (2). This pre-stretch, or ‘countermovement’ action is known as the stretch-shortening cycle (SSC) and is comprised of three phases (eccentric, amortization, and concentric). The SSC is described as a rapid cyclical muscle action whereby the muscle undergoes an eccentric contraction, followed by a transitional period prior to the concentric contraction (4). This muscle action is also sometimes referred to as the reverse action of muscles (5). The action of the SSC is perhaps best described as a spring-like mechanism, whereby compressing the coil causes it to rebound and therefore jump off a surface or in a different direction (Figure 2). Increasing the speed at which the coil is compressed or how hard it is pressed down (amount of force applied) will result in the spring jumping higher or farther. This is known as the ‘rate of loading’, and increasing this will often mean the spring will jump higher or farther. Therefore, a jump which incorporates a ‘run-up’ will often allow an athlete to jump higher or farther than a jump from a static position because of an increase in the rate of loading."

FP26 said:

Thank you TDS. Listed below is a very brief description of the Serape Effect...

"The function of the serape
effect is to provide the muscles of
the core an optimal length-tension
environment for maximum force
production. The serape effect is
the result of the interaction of 4
pairs of muscles: the rhomboids,
the serratus anterior, the external
obliques, and the internal
obliques. "

Is it fair to say that the "core model" (not really sure what you call it) includes each of the muscle groups bolded above?

Click to expand...

FP, one can call it what ever they would like.. Just pointing out the differences between movement patterns and its much more then style..