| Decreased muscle oxygenation and increased arterial blood flow in the non-exercising limb during leg exercise. | |
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MedLine Citation:
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PMID: 20204819 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We evaluated arterial blood flow, muscle tissue oxygenation and muscle metabolism in the non-exercising limb during leg cycling exercise. Ten healthy male volunteers performed a graded leg cycling exercise at 0, 40, 80, 120 and 160 watts (W) for 5 min each. Tissue oxygenation index (TOI) of the non-exercising left forearm muscle was measured using a near-infrared spatially resolved spectroscopy (NIR(SRS)), and non-exercising forearm blood flow ((NONEX)FBF) in the brachial artery was also evaluated by a Doppler ultrasound system. We also determined O(2) consumption of the non-exercising forearm muscle (NONEXV(O)(2mus)) by the rate of decrease in O(2)Hb during arterial occlusion at each work rate. TOI was significantly decreased at 160 W (p < 0.01) compared to the baseline. The (NONEX)V(O)(2mus) at each work rate was not significantly increased. In contrast, (NONEX)FBF was significantly increased at 120 W (p < 0.05) and 160 W (p < 0.01) compared to the baseline. These results suggest that the O(2) supply to the non-exercising muscle may be reduced, even though (NONEX)FBF increases at high work rates during leg cycling exercise. |
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Authors:
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Kiyoshi Shiroishi; Ryotaro Kime; Takuya Osada; Norio Murase; Kousuke Shimomura; Toshihito Katsumura |
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Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: Advances in experimental medicine and biology Volume: 662 ISSN: 0065-2598 ISO Abbreviation: Adv. Exp. Med. Biol. Publication Date: 2010 |
Date Detail:
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Created Date: 2010-03-05 Completed Date: 2010-03-26 Revised Date: 2010-05-14 |
Medline Journal Info:
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Nlm Unique ID: 0121103 Medline TA: Adv Exp Med Biol Country: United States |
Other Details:
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Languages: eng Pagination: 379-84 Citation Subset: IM |
Affiliation:
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Department of Judotherapy and Sports Medicine, Ryotokuji University, Chiba 279-8567, Japan. cafe@foot.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Arteries
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physiology* Bicycling / physiology Exercise / physiology* Exercise Test Forearm / blood supply Humans Leg / blood supply*, physiology* Male Muscle, Skeletal / metabolism* Oxygen / metabolism* Regional Blood Flow / physiology* Young Adult |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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