Biomechanical analysis of functional electrical stimulation on trunk musculature during wheelchair propulsion

Yang, YS and Koontz, AM and Triolo, RJ and Cooper, RA and Boninger, ML (2009) Biomechanical analysis of functional electrical stimulation on trunk musculature during wheelchair propulsion. Neurorehabilitation and Neural Repair, 23 (7). 717 - 725. ISSN 1545-9683

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Abstract

Background. The objective of this study was to examine how surface electrical stimulation of trunk musculature influences the kinematic, kinetic, and metabolic characteristics, as well as shoulder muscle activity, during wheelchair propulsion. Methods. Eleven participants with spinal cord injury propelled their own wheelchairs on a dynamometer at a speed of 1.3 m/s for three 5-minute trials. During a propulsion trial, 1 of 3 stimulation levels (HIGH, LOW, and OFF) was randomly applied to the participantĝ€™s abdominal and back muscle groups with a surface functional electrical stimulation device. Propulsion kinetics, trunk kinematics, metabolic responses, and surface electromyographic (EMG) activity of 6 shoulder muscles were collected synchronously. Kinetic, kinematic, and EMG variables were recorded during 3 time intervals (30 seconds each) within a 5-minute trial. Metabolic variables were recorded through the entire 5-minute trial. Results. Participants with HIGH stimulation increased their gross mechanical efficiency (P =.05) during wheelchair propulsion. No differences were found in shoulder EMG activity, energy expenditure, and trunk motion between stimulation levels. Conclusion. Functional electrical stimulation on the trunk musculature has potential advantages in helping manual wheelchair users with spinal cord injury improve propulsion efficiency without placing additional demands on shoulder musculature.

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Details

Item Type:	Article
Status:	Published
Creators/Authors:	Creators Email Pitt Username ORCID Yang, YS Koontz, AM akoontz@pitt.edu AKOONTZ Triolo, RJ Cooper, RA RCOOPER@pitt.edu RCOOPER Boninger, ML boninger@pitt.edu BONINGER
Centers:	Other Centers, Institutes, Offices, or Units > Human Engineering Research Laboratories
Date:	1 September 2009
Date Type:	Publication
Journal or Publication Title:	Neurorehabilitation and Neural Repair
Volume:	23
Number:	7
Page Range:	717 - 725
DOI or Unique Handle:	10.1177/1545968308331145
Schools and Programs:	School of Health and Rehabilitation Sciences > Rehabilitation Science and Technology
Refereed:	Yes
ISSN:	1545-9683
MeSH Headings:	Abdominal Muscles--physiology; Adult; Biomechanics; Electric Stimulation Therapy; Electromyography; Female; Humans; Kinetics; Locomotion; Male; Middle Aged; Muscle, Skeletal--physiology; Shoulder--physiology; Spinal Cord Injuries--physiopathology; Spinal Cord Injuries--rehabilitation; Thorax; Wheelchairs
PubMed ID:	19261768
Date Deposited:	15 Oct 2012 14:17
Last Modified:	02 Feb 2019 16:56
URI:	http://d-scholarship-dev.library.pitt.edu/id/eprint/15775

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