Corsets are widely used in the management of spinal cord injury (SCI) patients. Their use provides a certain amount of rigidity to the trunk which may help some patients to maintain posture; they also may contribute when used in combination with contention to reduce orthostatic hypotension. Last, they may reduce dyspnea and improve respiratory tolerance while sitting. Indeed, patients with recent SCI worsen their respiratory function in the sitting position secondary to the hypotonia of abdominal muscles which places the diaphragm in a lower and less efficient position. The use of a corset rigidifies the abdominal wall and therefore improves the diaphragm contraction's efficiency leading to an improvement of vital capacity (VC) and a reduction of dyspnea in the sitting position. But although some patients continue to use a corset overtime, others discontinue its use. We recently observed that corset users presented an improvement of VC with corset use proportional to the improvement of VC observed in the supine position while patients who had discontinued its use did not exhibit a reduction of VC between the supine and the upright position suggesting that they presented a more rigid abdominal wall.