Standing Stability Evaluatioin Using a Triaxial Accelerometer
نویسنده
چکیده
A triaxial accelerometer is placed at the back of the subject at the height of the center of mass. Force plate data are collected simultaneously. Subjects stand in a comfortable position with eyes open, eyes closed and doing cognitive tasks; and with feet together with eyes open and closed. The cognitive tasks are: mathematical, auditory Stroop and memory. The force plate data are processed to obtain the center of pressure and from it the parameters of: mean radius, speed and frequency, and base of support. The same parameters are obtained from the combined accelerations vector projection on the floor, found from the triaxial accelerometer data. The mean angular velocity, angular acceleration and accelerations in the horizontal plane a t the level of the accelerometer are calculated. T-tests indicate that for most parameters the accelerometer measurements are able to distinguish between the different test conditions as well as the force plate (~10.05).
منابع مشابه
A Simple and Fast Method for Field Calibration of Triaxial Gyroscope by using Accelerometer
متن کامل
Standing Handball Throwing Velocity Estimation with a Single Wrist-Mounted Inertial Sensor
Background. It is well known that overarm throwing is one of the most performed activities in the handball. Shoulder and glenohumeral injuries incidence are high in handball because of both pass, and shooting activity was executed repeatedly in high angular speed. Objectives. This study set out to investigate the usefulness of inexpensive commercial inertial movement sensors for prediction of ...
متن کاملDetection of physical activity types using triaxial accelerometers.
BACKGROUND The aim of this study was to validate a triaxial accelerometer setup for identifying everyday physical activity types (ie, sitting, standing, walking, walking stairs, running, and cycling). METHODS Seventeen subjects equipped with triaxial accelerometers (ActiGraph GT3X+) at the thigh and hip carried out a standardized test procedure including walking, running, cycling, walking sta...
متن کاملPhysical activity recognition using a single triaxial accelerometer and a barometric sensor for baby and child care in a home environment
In this paper, we describe and evaluate an activity recognition system using a single 3-axis accelerometer and a barometric sensor worn on a waist of the body. The purpose of this work is to prevent child accidents such as unintentional injuries at home. In order to prevent child accidents in the home and reduce efforts of parents, we present a new safety management system for babies and childr...
متن کاملQuantitating physical activity in COPD using a triaxial accelerometer.
STUDY OBJECTIVE To determine the reliability, validity, and stability of a triaxial accelerometer for walking and daily activity measurement in a COPD sample. DESIGN Cross-sectional, correlational, descriptive design. SETTING Outpatient pulmonary rehabilitation program in a university-affiliated Veterans Affairs medical center. PARTICIPANTS Forty-seven outpatients (44 men and 3 women) wit...
متن کامل