AN IMPROVED HUMAN MODEL FOR USE IN THE STUDY OF SITTING POSTURES
A human modelling program has been extended to allow it to handle constraint rules. The improvements include those of modelling balance and posture as well as hand gripping. This model has been applied to studies of people with tetraplegia and in particular to their abilities to use a wheel chair. In this study a range of patients were investigated and significantly different postures were found dependent on the level of their spinal injuries. The models and rules can now be used to modify the individual wheel chairs to improve the posture and match the capability of the users.