Live2Train
New member
^^^^ This.
I don't know how you guys think you are managing to isolate 1 minor part of your chest.
First of all, you have the pectoralis major and the pectoralis minor unless you're somehow different than the rest of us. Muscle fibers DO NOT span the entire length of a muscle, as one single muscle fiber. Muscle fibers are actually segmented and joined with other muscle fibers/segments to form a long ensemble that will eventually link both attachments together.
Each strip/segment of a muscle fiber is selectively linked to its own set of motor axons. This means that not only are muscle fibers really divided into shorter segments aligned in series, BUT THAT EACH SEGMENT HAS ITS OWN SOURCE OF ACTIVATION. You can't isolate say the inner chest, but you can emphasize the inner chest. In the Muscle and Fitness magazine [september 29, 2008 - Page 200] There is an interview with Phil Heath the man himself. He clearly states that he used the ISO press machine and cable cross-overs to fill out his inner chest. He mentions that the key is to squeeze through the entire movement and you can feel it in the middle chest. I would love for you to tell him that he is full of shit. Also, Charles Glass one of the top trainers in the entire world has videos where he talks about the "inner chest". So yes, you can tear more muscle fibers in different parts of the chest with different movements. Have you even done any research to back up this claim, or do you just post shit to post it?