Which guideline for safe reaching is incorrect?

The guideline for safe reaching includes various techniques aimed at minimizing the risk of injury, particularly to the back. The assertion that reaching no more than 30 inches in front of you is incorrect because the recommended distance can vary based on the individual's body mechanics and the specific situation. In many cases, reaching further than 30 inches may be safe for some individuals if they maintain proper posture and alignment while doing so.

Maintaining a locked-in back position helps to stabilize the spine and prevent injury while reaching. Avoiding hyperextension of the back is crucial as this prevents strain on the spinal structures and reduces the risk of injury. Additionally, twisting of the back while reaching can put undue stress on the spine and lead to potential injuries, hence the importance of keeping the body aligned. Therefore, the 30-inch guideline is not a universal limit and is not consistently upheld in ergonomic practices, making it an incorrect guideline in this context.