| Cardiorespiratory responses to arm cranking and electrical stimulation leg cycling in people with paraplegia. | |
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MedLine Citation:
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PMID: 10378909 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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J Raymond; G M Davis; M Climstein; J R Sutton |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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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:
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Created Date: 1999-08-30 Completed Date: 1999-08-30 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 822-8 Citation Subset: IM; S |
Affiliation:
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Rehabilitation Research Centre, Faculty of Health Sciences, The University of Sydney, Australia. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Arm Cardiac Output Cardiovascular Physiological Phenomena Electric Stimulation Exercise / physiology* Heart Rate Humans Leg Male 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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