Which activity is advisable for a client with chronic low back pain to manage symptoms effectively?

For a client with chronic low back pain, sitting with a lumbar roll or pillow is advisable because it provides essential support to the natural curve of the lumbar spine. This supportive posture helps to alleviate pressure on the lower back, promoting better spinal alignment and reducing discomfort. The lumbar roll helps to maintain the proper curvature of the spine, which can prevent the aggravation of pain symptoms commonly associated with prolonged sitting or improper posture.

In contrast, standing flat-footed for long periods can increase strain on the lower back, potentially worsening pain due to static positioning. Using a chair without lumbar support generally lacks adequate support for the lower back, which could also lead to increased discomfort or pain over time. Engaging in high-impact sports may further exacerbate existing pain and lead to additional injuries, as they involve repetitive stress on the spine. Hence, supportive sitting practices are much more beneficial for managing chronic low back pain than the other options.