Recently, physical exercise has been investigated as an important preventive therapy for arteriosclerotic diseases. But, in contrast to this point of view, exercise also has a negative aspect : it may provoke an ischemic attack in people with a history of coronary artery disease, if the exercise level is excessive. The number of people who intend to promote health by exercise has gradually increased.
　Thus, the present task is how to monitor their daily physical activity in order to provide information to maintain health. A new device which monitors body movement, heart rate, and systemic blood pressure for 24 hours, has been degigned and tested. Two kinds of accelerometers to measure body movement are employed. The first is a one-dimensional-accelerometer, the other is a three-dimensional one. The accuracy and usefulness of these two devices were investigated.

DESCENTE SPORTS SCIENCE Vol.14/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE