Which of the following activities should patients avoid during a trial period to prevent lead migration?

During a trial period for devices such as spinal cord stimulators, it is crucial to prevent lead migration to ensure proper functioning and efficacy of the device. Engaging in activities such as bending, lifting, twisting, or exposure to water can significantly increase the risk of lead migration. These movements can cause unnecessary stress or strain on the device and its leads, potentially leading to displacement from their intended position.

On the other hand, while staying seated for long periods might not be ideal for overall health or comfort, it does not pose the same immediate mechanical risk as the activities listed in the correct answer. Similarly, walking short distances and using stairs are typically considered safe, as they do not usually involve the same degree of physical strain that might lead to migration or dislocation of the device leads. Therefore, avoiding bending, lifting, twisting, and exposure to water is essential for protecting the integrity of the implanted leads during the trial period.