The Evaluation of Ground Reaction Force (GRF) Graphics Acquired During Some Daily Activities

摘要

Due to the gravity, we constantly maintain contact with the ground, and in this process, interactions occur between the body and the ground. According to Newton's 3 Law of Motion (Law of Reaction), for every action, there is an equal and opposite reaction. The reaction force exerted to the body by ground is specifically called the ground reaction force (GRF). Measuring the GRF with insole mats is more useful and objective than the force platforms. In this method, it is possible to get data from more than one step in one single trial. Our purpose in this study was to demonstrate the gait graphics taken from some daily activities and to evaluate the GRF during stair ascent and descent. The data taken from the measurements of 10 subjects' (5 males, 5 females) stair ascent and des cent were analyzed and discussed.