The F series simba muchina, F90 imwe Dual station fitness machine, kureva kudzidzisa Prone Leg Curl uye Leg Extention pamushini mumwe chete. wakagadzirwa neakanaka, nyore kugadzirisa ankle pad uye shin pad kubva panzvimbo yakagara. Iyo pazasi-the-ibvi shin pad dhizaini inofambisa yakakodzera gumbo curl fomu. Vanoita maekisesaizi vanogona kupinza nyore nyore kuwedzera-pahuremu nekusundidzira kuri nyore kwerevheti kuti uwedzere mutoro webasa.