What are the risk factors associated with manual material handling? List out some methods to prevent back injury in Manual Material Handling? 

Manual material handling refers to the process of moving, lifting, and transporting materials and objects by hand or using simple tools such as dollies, carts, or hand trucks. While manual material handling is a common activity in many workplaces, it can also pose significant risk factors for back injury and other musculoskeletal disorders (MSDs).

Risk factors associated with manual material handling include:

1. Awkward postures: Lifting or carrying objects in awkward postures, such as twisting the torso or bending at the waist, can put excessive stress on the back muscles and increase ____ ___ __________ _______ ______ ____ ________ ___ ___ ____ ___ _________.
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