Document Detail

Physiologic costs of computer-controlled walking in persons with paraplegia using a reciprocating-gait orthosis.
MedLine Citation:
PMID:  1929807     Owner:  NLM     Status:  MEDLINE    
Blood pressure, heart rate, oxygen uptake, cardiac output, and the surface electromyogram from key muscle groups in the upper body were measured in four subjects with paraplegia during ambulation using only a reciprocating-gait orthosis (RGO) and using an RGO with movement assisted by functional electrical stimulation (FES) of the hamstring and gluteus maximus muscles. These data were compared to data collected on four able-bodied control subjects during ambulation at matched speeds. Whether walking with FES and RGOs or walking with RGOs alone, subjects had an optimum gait speed at which efficiency was highest. For paralyzed subjects using FES, the optimum walking speed was approximately 1.5 mph (2.4km/hr); without FES, the optimum speed averaged about 0.75mph (1.2km/hr). Blood pressure, heart rate, oxygen uptake, and cardiac output were measured during ambulation with FES and were found to be higher than those of controls, but they were significantly lower than those in the paralyzed subjects in RGOs with no FES. Electromyogram studies showed that the activity in upper body muscles was much higher when walking in RGOs without FES than in RGOs with FES.
J S Petrofsky; J B Smith
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  72     ISSN:  0003-9993     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  1991 Oct 
Date Detail:
Created Date:  1991-11-06     Completed Date:  1991-11-06     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  890-6     Citation Subset:  AIM; IM    
Petrofsky Research Institute, Irvine, CA 92718.
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MeSH Terms
Cardiac Output / physiology
Electric Stimulation Therapy
Gait / physiology*
Isometric Contraction / physiology
Orthotic Devices*
Oxygen Consumption / physiology
Paraplegia / rehabilitation*
Therapy, Computer-Assisted*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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