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Ischial tuberosity pressure distributions from a sample participant: (A) no directional change was observed between the testing condition of 15° tilt and 10° recline (light) and the testing condition of 25° tilt and 10° recline (dark); (B) a directional change of 90° was observed between the testing condition of 15° tilt and 30° recline (light) and the testing condition of 25° tilt and 30° recline (dark).
