Document Detail

Cardiorespiratory responses to arm cranking and electrical stimulation leg cycling in people with paraplegia.
MedLine Citation:
PMID:  10378909     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The purpose of this study was to assess the cardiorespiratory responses during arm exercise with and without concurrent electrical stimulation-induced leg cycling in people with paraplegia. METHODS: On separate days, 10 subjects with spinal cord injuries (T5-T12) performed either arm cranking (ACE), or simultaneous arm cranking + electrical stimulation-induced leg cycling (ACE+ES-LCE) graded exercise tests. RESULTS: During submaximal, steady-state exercise, ACE+ES-LCE elicited significantly higher VO2, (by 0.25-0.28 L x min(-1)) stroke volume (by 13 mL), and VE(BTPS) (by 9.4 L x min(-1)) compared with ACE alone. In contrast, there were no significant differences of submaximal HR, cardiac output, or power output between the exercise modes. At maximal exercise, ACE+ES-LCE elicited significantly higher VO2 (by 0.23 L x min(-1)) compared with ACE alone, but there were no differences in power output, HR, or VE(BTPS). CONCLUSIONS: These results demonstrate that during submaximal or maximal exercise there was a greater metabolic stress elicited during ACE+ES-LCE compared with during ACE alone. The higher stroke volume observed during submaximal ACE+ES-LCE, in the absence of any difference in HR, implied a reduced venous pooling and higher cardiac volume loading during ACE+ES-LCE. These results suggest that training incorporating ACE+ES-LCE may be more effective in improving aerobic fitness in people with paraplegia than ACE alone.
J Raymond; G M Davis; M Climstein; J R Sutton
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  31     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  1999 Jun 
Date Detail:
Created Date:  1999-08-30     Completed Date:  1999-08-30     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  822-8     Citation Subset:  IM; S    
Rehabilitation Research Centre, Faculty of Health Sciences, The University of Sydney, Australia.
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MeSH Terms
Cardiac Output
Cardiovascular Physiological Phenomena
Electric Stimulation
Exercise / physiology*
Heart Rate
Oxygen Consumption / physiology*
Paraplegia / physiopathology,  rehabilitation*
Spinal Cord Injuries / rehabilitation*
Stroke Volume

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

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