Kuwonjeza kumbuyo ndi ntchito yolimbitsa thupi yomwe imagwiritsidwa ntchito popanga mphamvu zam'mbuyo zomwe zimayang'ananso ma hamstrings ndi glutes.The Hammer Strength Pin Loaded Selection Back Extension ndi gawo lofunikira pakuphunzitsira mphamvu.Pali njira yoyambira yosinthira magawo asanu pazokonda zamtundu uliwonse, lumbar pad imathandiza ogwiritsa ntchito kupeza malo ozungulira, ndi malo awiri osatsetsereka a phazi lokwanira masikelo onse.