Scientific tsim coj tus qauv tsim nyog, yooj yim thiab dav saib mus rau chav tsev thaum zoo cov raj siv rau cov ncej zoo thiab sib sau ua ke kom muaj kev nyab xeeb thiab ua haujlwm ntev.Qhov kev txav mus los ua raws li lub hauv paus ntsiab lus ntawm ergonomics thiab scientifically faib zoo steel cables coj qib siab ntawm kev nplij siab. thiab kev nyab xeeb.
Shroud zoo kawg nkaus tiv thaiv cov neeg siv los ntawm qhov hnyav daim hlau thiab ntxiv txhim kho kev nyab xeeb kev siv.High-end bearings siv rau kev sib txuas coj smoother txav.Rasonably tsim handgrips nrog high degrees ntawm kev nplij siab ua rau nws yooj yim rau cov neeg siv rau exert lawv tus kheej thiab ces coj smoother txav.