In the beginning of the development of an intended science of movement behavior of disabled people there were a lot of uncertainties. Some help could be found in MEINELs conceptional ideas and also in the symptomatic descriptions in neurology and orthopedy. This paper tries to give systematics even of the motor-problems, but also of the movement-abilities of disabled. Showing some new experimental results of motor behavior, esp. of electromyografical measurements it is thought to bring the science of motor behavior of disabled to a next evolution-step, which helps to make a better practice in sports-therapy. In the beginning of the development of an intended science of movement behavior of disabled people there were a lot of uncertainties. Some help could be found in MEINELs conceptional ideas and also in the symptomatic descriptions in neurology and orthopedy. This paper tries to give systematics even of the motor-problems, but also of the movement-abilities of disabled. Showing some new experimental results of motor behavior, esp. of electromyografical measurements it is thought to bring the science of motor behavior of disabled to a next evolution-step, which helps to make a better practice in sports-therapy