A Mechanical model for flexible exercise bars to study the influence of the initial position of the bar on lumbar discs and muscles forces. - Kinda Khalaf; Masoud Abdollahi; Mohammad Nikkhoo; Maryam Hoviattalab; Mohsen Asghari; Sajad Ashouri; Seyedhassan Nikpour; Sedighe Kahrizi; Mohamad Parnianpour (EMBC, 2015)