Abstract
Ten men with cervical spinal cord injury were studied using magnetometers to record surface motions of the chest wall during speech breathing. Individual speech breathing patterns reflected inspiratory and expiratory muscular sparing. Subjects compensated for expiratory muscle impairment by speaking at large lung volumes, presumably to take advantage of the higher recoil pressures available at those volumes. Similarly, subjects used larger lung volumes to increase loudness. Abnormal chest wall behavior was attributed in large part to loss of abdominal muscle function. Because of this, speech breathing in individuals with cervical spinal cord injury may be improved by the use of abdominal binders.
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