I-Fusion Pro Series Back Extension inomklamo wokuhamba ngezinyawo onamarola alungisekayo angemuva, okuvumela ojimayo ukuthi akhethe ngokukhululekile uhla lokunyakaza.Ngesikhathi esifanayo, i-Fusion Pro Series ilungiselela iphuzu le-pivot lengalo enyakazayo ukuze ilixhume nomzimba oyinhloko wezinto zokusebenza, ithuthukise ukuzinza nokuqina.