Which statement indicates a need for further instruction on body mechanics?

The statement about lifting using back muscles indicates a need for further instruction on body mechanics because it reflects a fundamental misunderstanding of safe lifting techniques. Proper lifting emphasizes the importance of utilizing larger muscle groups, such as those in the legs and arms, rather than relying on smaller, more vulnerable muscles located in the back. Using the back muscles can increase the risk of injury, particularly in healthcare settings where manual lifting is common.

In contrast, the other statements highlight safe practices. Asking for help promotes collaborative efforts and reduces the strain on an individual's body. Using legs and arms to lift aligns with the principle of leveraging powerful muscle groups while minimizing the risk of injury. Maintaining a wide base of support is crucial for stability and balance during lifting, which protects both the person lifting and the patient being moved. These practices reflect an understanding of body mechanics that helps ensure safety in lifting and positioning patients.