It is a machine more specific than the previous ones; it is thought to shape the muscles of the lower limbs (legs).
Thanks to the way is having been made it is possible to work out muscles than with other traditional machines were very complicated, like the inner muscles of the legs: tibia or popleto muscle. The last one is very important to avoid injuries or pain in the knees due to is a muscle we use often but we hardly work out correctly. Until now the most common way to work out were lie down on the floor with heavy snickers on and complex rubbers system.
You can do almost the same exercises that the apparatus higher, but without the use or support or loops for hands, and the balance is critical. Pilates himself said that it was only for experts who wanted to do pilates at home.
Mainly focused on the work of legs, balance and breathing. Using the seat can be abdominal, as you can see in the video. But do not do it with his legs stretched as the companion video. The abdominal section of this page will explain in detail because they never have to do a job with abdominal legs stretched. While pilates classic follows (not all), making the abdominal this way, the new studies, and not so new, they claim that apart from working the abdominal run little risk of damage to the musculo-iliac psoa.