Frequency analysis of kinematics of racing wheelchair propulsion

Author

DiGiovine, Carmen P. ; Cooper, Rory A. ; DiGiovine, Michalle M. ; Boninger, Michael L. ; Robertson, Rick N.

Author_Institution

Dept. of Rehabilitation Sci. & Technol., Pittsburgh Univ., PA, USA

Volume

8

Issue

3

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

385

Lastpage

393

Abstract

The purpose of this study was to describe the frequency content of racing wheelchair propulsion motion data. The selection of the filter corner frequency in previous kinematic analyses of manual wheelchair propulsion was commonly based on gait literature. An estimate of the frequency separating the signal and the noise was determined to make recommendations for low-pass digital filters. The global (noncoordinate specific) cutoff frequency was 6 Hz. The directional cutoff frequencies were 5.1, 3.9, and 5.6 Hz, in the anterior-posterior, superior-inferior and medial-lateral directions, respectively. Recommendations for the corner frequencies of low-pass Butterworth digital filters based on the cutoff frequency are higher than the corner frequencies used in previous studies of manual wheelchair propulsion kinematic data. This study provides a foundation for the data reduction of manual wheelchair propulsion kinematic data that is independent of gait literature

Keywords

Butterworth filters; biomechanics; frequency-domain analysis; handicapped aids; kinematics; low-pass filters; medical signal processing; sport; 3.9 to 6 Hz; Butterworth digital filters; anterior-posterior; directional cutoff frequencies; gait literature; kinematics frequency analysis; low-pass digital filters; medial-lateral direction; noncoordinate specific cutoff frequency; racing wheelchair propulsion; superior-inferior; Cameras; Cutoff frequency; Ergonomics; Filters; Kinematics; Medical services; Motion analysis; Noise reduction; Propulsion; Wheelchairs;

fLanguage

English

Journal_Title

Rehabilitation Engineering, IEEE Transactions on

Publisher

ieee

ISSN

1063-6528

Type

jour

DOI

10.1109/86.867880

Filename

867880