The Effects of Balanced Seating Pressure on Pelvic Asymmetry in Under-Buttocks Pressure, Spinal Alignment, and Lower Back Pain: A Pilot Study
The goal of this clinical trial is to learn if the DaSuit® cushion helps reduce discomfort caused by sitting in adults with non-specific low back pain. It will also assess the safety and physical effects of using the DaSuit® cushion. The main questions it aims to answer are: 1. Does the DaSuit® cushion distribute the pressure evenly on both under-buttock pressure compared to a placebo cushion? 2. Does the DaSuit® cushion improve spinal alignment compared to a placebo cushion? 3. What discomfort or adverse events do participants experience when using the DaSuit® cushion? Researchers will compare the DaSuit® cushion to a placebo cushion (a look-alike cushion without therapeutic effect) to see if the DaSuit® cushion works to relieve sitting-induced discomfort. Participants will: 1. Use the DaSuit® cushion or a placebo cushion in a randomized order, with each sitting session lasting 10 minutes 2. Complete both conditions with a 10-minute washout period between sessions 3. Sit on a standardized wooden chair with a pressure sensor mat placed on the cushion surface 4. Keep a fixed posture with hips, knees, and ankles at approximately 90 degrees 5. Watch a 10-minute video on a tablet positioned 30-40 cm in front of them at a 5-10 degree downward angle to maintain a steady gaze 6. Undergo spinal imaging immediately after each session, maintaining the same seated posture 7. Report any discomfort or pain experienced during or after each session
• adults aged 20 to 50 years
• adults had low back pain non-specific but exacerbated by sitting with VAS score between 3-7
• body height between 150-180 cm
• BMI between 18.5-24
• a radiographically verified hemi-pelvic height discrepancy of ≥ 0.3 cm in sitting posture
• willing to participate and cooperate throughout the whole intervention session