“…However, it is easy to overlook because the physical motor deficit caused by hemiplegia is prominent and the change in respiratory function that occurs after stroke may not cause acute respiration disease. Furthermore, stroke causes physical disorders accompanied by decreased flexibility and muscle weakness, and asymmetric breathing is caused by an increase in sensitivity to carbon dioxide and a decrease in voluntary breathing, which can change respiration control [19][20][21].Since respiration is one of the most important functions for human life, patients' functional ability must be assessed, to diagnose disease and to investigate the prognosis with cardiopulmonary function measurements.Aging can change sensorimotor processing, and the older neuromuscular system is weakened by 40% compared to normal healthy adults [22].Generally, stroke, which occurs in the middleaged and older population, is a neurological disorder and shows diverse symptoms such as decreased sensorimotor function, perception, cognition, verbal function, and psychological disorder. Moreover, many patients have permanent disability without the recovery of function [23].…”