Kuwonjeza kumbuyo ndi masewera olimbitsa thupi omwe amagwiritsidwa 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 zamitundu yosiyanasiyana, lumbar pad imathandiza ogwiritsa ntchito kupeza malo a axis of kuzungulira, ndi malo awiri osatsetsereka a phazi lokwanira misinkhu yonse.