Makina amphamvu a F series, F90 ndi makina olimbitsa thupi a Dual station, mwachitsanzo, kuphunzitsa Prone Leg Curl ndi Leg Extention pa makina amodzi omwewo. Mapangidwe apansi pa bondo a shin pad amathandizira mawonekedwe oyenera a mwendo. Ochita masewera olimbitsa thupi amatha kuphatikizira kulemera kowonjezera ndi kukankha kosavuta kwa lever kuti awonjezere ntchito.