An evaluation method of complex movement of the arm during walking based on gyroscope data and angle-angle diagram

The article focuses on a technique of gyroscope data processing and quantifying movement patterns of upper limb during walking. Four cheap gyroscopes were used. Using a novel method based on the trajectory length obtained by plotting shoulder and elbow joint angle vs. each other, provides information for a quantification of the complex arm movement as a whole in the sagittal plane. Two parameters for the evaluation of motion, the trajectory length (TL) and traditional range of motion (ROM), were used to analyze a simple rhythmical movement and identified application possibilities of the new parameter. The Pearsons correlation coefficient indicates very strong correlation between the TL and ROM (r>0.8) for both dominant and non-dominant upper limb. Also, the correlation between the body height and TL or ROM was studied. The correlation between the body height and TL or ROM was a negligible (r<;0.2). This shows the versatility of the proposed parameter.