Portable physical activity monitoring system for the evaluation of activity of the aged in daily life

Prevention of the accident is very important for the health management of the aged, and 24 hrs monitoring of health condition is desirable for this prevention. From this point of view we have developed a portable digital biosignal memory unit and studied its application for health care. In this study we've used this monitor unit and one 3-axis accelerometer set on a subject's waist and attempted to monitor his physical activity in daily life.