| Cardiorespiratory responses to exercise distributed between the upper and lower body. | |
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MedLine Citation:
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PMID: 6863099 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present study examined the influence that distributing exercise between upper (arm crank exercise) and lower (cycle exercise) body muscle groups had on cardiorespiratory responses to constant power output (PO) exercise. Six male volunteers completed five submaximal exercise bouts of 7-min duration at both 76 and 109 W. The arm PO/total PO (% arm) for these bouts was approximately 0, 20, 40, 60, and 100%. At 76 W, O2 uptake (VO2) did not change (P greater than 0.05) from 0 to approximately 20% arm (approximately 1.30 1 x min-1) but increased with increasing percent arm values up to 100% (1.58 1 x min-1). At 109 W, VO2 increased throughout the range of 0 (1.70 1 x min-1) to 100% arm (2.33 1 x min-1). In general, minute ventilation (VE) and respiratory exchange ratio (R) increased with increased percent arm values at 76 and 109 W. The heart rate (HR) responses remained unchanged from 0 to 60% arm at both 76 and 109 W; however, between 60 and 100% arm, a 26-beats x min-1 increase was observed at 76 W (143 beats x min-1 at 100% arm) and a 45-beats x min-1 increase at 109 W (174 beats x min-1 at 100% arm). These data suggested that during upper body exercise, the increased VO2 associated with increased percent arm values was not accompanied by an elevated HR response when at least 40% of the PO was performed by the lower body. This might be attributed to a facilitated venous return and/or a decreased total peripheral resistance when the lower body was involved in the exercise. |
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Authors:
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M M Toner; M N Sawka; L Levine; K B Pandolf |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of applied physiology: respiratory, environmental and exercise physiology Volume: 54 ISSN: 0161-7567 ISO Abbreviation: J Appl Physiol Publication Date: 1983 May |
Date Detail:
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Created Date: 1983-08-11 Completed Date: 1983-08-11 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 7801242 Medline TA: J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1403-7 Citation Subset: IM; S |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Arm / physiology* Exercise Test Heart Rate Humans Leg / physiology* Male Oxygen Consumption Physical Exertion* Respiration* Respiratory Function Tests |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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