“…Musculoskeletal symptoms associated factors a) Perceived physical demands Statistical analysis of the data, similar to the other studies findings [28][29][30][31] , showed that perceived physical demands i.e., pulling/pushing heavy objects, moving/lifting/lowering heavy loads, repetitive motions with hands/wrists and bent or twisted posture of the trunk, were significantly associated with musculoskeletal symptoms in different body regions. In accordance with Addington's results 28) , there was no relationship between lifting or lowering and low back problem, while bending and twisting at the waist had association.…”