Effect of adaptive seating on pulmonary function of children with cerebral palsy.

The vital capacity (VC), forced expiratory volume in one second (FEV1) and expiratory time (ET) of eight cerebral-palsied children aged between five and 12 years was measured, when seated in a regular sling-type wheelchair and in an adaptive seating system. The results showed a 57.7 per cent increase in VC, a 51.6 per cent increase in FEV1 as a percentage of VC, and a 55 per cent increase in ET in the adaptive seating system compared with the standard wheelchair. These results have important implications for speech, sitting for prolonged periods and prevention of hypoxia and pulmonary hypertension.