Napadá vás nějaká knížka, kde by byly cviky s kettlem rozepsané nějak podobně podrobně? Vím, že o otm knížky v angličtině jsou, ale jak si ji člověk nemůže vzít do ruky a prolistovat jestli je to ono, ak je to nahouby :-(
There are swings and then there are swings.
This doesn't match with what I've experienced at all.
To me it feels like when done correctly with "hard style" form, from the starting position (ie. The silver back) when you snap the kb back between your legs you are loading the hamstrings, while at the same time engaging your lats to "anti-shrug" and maintain good spinal position by also engaging your back muscles.
You release the stored power in your hamstrings, firing your hips forward as you stand upright, gripping the floor with your toes and tensing your quads pulling your knees up. The hip drive throws the arms up and forwards, with your glutes and quads contracting. As the bell swings up and out the lats and back are continually under tension to hold correct posture, as are your shoulders which are packed to prevent them being pulled forwards.
At the top of the swing, your legs, glutes, abs are fully contracted, as are your back muscles. Your shoulders and traps are under tension and you will also feel it in your arms.
If you are doing one arm swings it also adds to the tension in your body as you fight the centrifugal force of the swing to prevent your torso rotating and keep your shoulders Square.
It should be obvious that this also works your grip (and the required musculature) like nobody's business.
Although you will see the kb "float" at the top of the swing it shouldn't be mistaken that the person swinging has relaxed at that point, their entire body will be under tension.
As the kb starts to drop, it is literally pushed down and back, with the same muscles engaged in the upward portion engaged to push / pull the bell back down between legs and behind the body. The lats are flared, shoulders packed, hamstrings loaded etc.
Do 100 swings like this (resting and testing your position whenever you can't maintain correct form or tension, this isn't crossfit after all ) and I'm positive that you will find your description doesn't appear to apply to the kb swing.
Now the Turkish getup is a whole other beast when it comes to being under tension throughout the whole movement, which can take 30 secs to a min to perform.