I-1.Uyilo lwe-arm-pressing back muscle trainer ihambelana ne-ergonomics, enokunciphisa uxinzelelo kunye nokubonelela abalolongi ngokuzinza okuphezulu kunye nokulawula.
2.Xa isihlalo sigxiliwe, ukwandiswa kwegxala kunciphisa, okuphucula ukuzinza kunye nokunciphisa uxinzelelo kwi-joint joint, ngokulandelanayo.