| Effects of submaximal exercise on blood rheology and sympathetic nerve activity. | |
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MedLine Citation:
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PMID: 20190425 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: To explore the acute effects of submaximal exercise on blood rheology and sympathetic nerve activity. METHODS AND RESULTS: The effects of exercise (20 or 80 Watts (W)) on blood rheology and sympathetic nerve activity were assessed in 10 healthy Japanese men. Blood sampling and heart rate variability (HRV) recording were performed during 20-min supine rest and standing ergometric exercise (20 W for 10 min, 80 W for 10 min) and recovery. Blood passage time across the microchannels (diameter, 7 microm) as a parameter of blood rheology, and the number of adhesive leukocytes on microchannel terraces as a parameter of leukocyte activation were measured. Sympathetic nerve activity was evaluated by plasma noradrenalin levels and the ratio of low-frequency (LF)/high-frequency (HF) by spectral analysis of HRV. Compared with values while supine at rest, significant increases in hematocrit, leukocyte count, noradrenalin level and blood passage time were seen after strenuous ergometer exercise at 80 W (P<0.01 each). The LF/HF ratio and nitric oxide metabolites tended to be increased with 80 W exercise. CONCLUSIONS: Strenuous exercise dynamically alters blood rheological parameters, probably by changes in hematocrit and sympathetic nerve activity. |
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Authors:
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Nahoko Ikeda; Takanori Yasu; Ken Tsuboi; Yoshitaka Sugawara; Norifumi Kubo; Tomio Umemoto; Kenshiro Arao; Masanobu Kawakami; Shin-ichi Momomura |
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Publication Detail:
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Type: Journal Article Date: 2010-02-27 |
Journal Detail:
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Title: Circulation journal : official journal of the Japanese Circulation Society Volume: 74 ISSN: 1347-4820 ISO Abbreviation: Circ. J. Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-03-26 Completed Date: 2010-07-15 Revised Date: 2011-02-18 |
Medline Journal Info:
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Nlm Unique ID: 101137683 Medline TA: Circ J Country: Japan |
Other Details:
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Languages: eng Pagination: 730-4 Citation Subset: IM |
Affiliation:
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First Department of Integrated Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Circulation / physiology* Exercise / physiology* Heart Rate / physiology Hematocrit Humans Leukocyte Count Male Middle Aged Nitric Oxide / metabolism Norepinephrine / blood Plasma Volume / physiology* Posture / physiology* Rheology Sympathetic Nervous System / physiology* |
| Chemical | |
Reg. No./Substance:
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10102-43-9/Nitric Oxide; 51-41-2/Norepinephrine |
| Comments/Corrections | |
Comment In:
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Circ J. 2010 Jul;74(7):1497; author reply 1498
[PMID:
20508378
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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