The daily routine of changing clothes and underclothes for patients undergoing physical therapy can sometimes be a problem. Clothes of the patients need to be changed several times a day, for example, when going outdoors and for other functional and social purposes. Changing clothes can be a problem for patients, depending on the kind of clothing, the patients' posture, and the method for changing clothes. Detaching, removing, or raising and lowering of clothes can also be a problem for patients, depending on whether the patient is lying down, sitting, or standing. This poses the question: How do physical therapists guide patients regarding changing clothes and underclothes? This study examined the operations of detaching, removing of clothes, and raising and lowering of underclothes. The study observed the normal operation of changing underclothes, using healthy people as subjects. The participants were videotaped. Additionally, the participants' centers of pressure (COP) were determined using a stabilimeter, and electrical muscle activity of the supporting leg was monitored by surface electromyography.