Muscle mechanoreflex mediates vasoconstriction in inactive limb in rats
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- Endo Masako Y
- Department of Exercise Science and Physiology, School of Health Sciences, Prefectural University of Hiroshima
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- Hayashi Naoyuki
- School of Health and Sport Sciences, Osaka University
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- Koba Satoshi
- School of Health and Sport Sciences, Osaka University
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- Morizono Yuka
- Department of Exercise Science and Physiology, School of Health Sciences, Prefectural University of Hiroshima
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- Ueoka Hatsumi
- Department of Exercise Science and Physiology, School of Health Sciences, Prefectural University of Hiroshima
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- Fujihara Chizuko
- Department of Exercise Science and Physiology, School of Health Sciences, Prefectural University of Hiroshima
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- Fukuba Yoshiyuki
- Department of Exercise Science and Physiology, School of Health Sciences, Prefectural University of Hiroshima
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Abstract
We determined whether, stimulation of mechanosensitive receptors in active muscle (muscle mechanoreflex activation) induces vasoconstriction in the contralateral non-active muscles. In mid-collicular decerebrated rats (n = 9), we measured the blood flow of the left iliac artery when the right Achilles tendon was stretched by 300 g for 30 seconds (s) to stimulate mechanoreceptors in the triceps surae muscles. The stretch significantly increased the mean arterial pressure (MAP: +20 ± 3%, peak increase from baseline; mean ± SEM) and decreased the vascular conductance (VC) in the left iliac artery (–9 ± 1%, averaged over the stimulation period). After cutting the left sciatic nerve, the stretch did not significantly change the VC (+5 ± 1%), while it significantly increased MAP (+13 ± 3%, peak). In conclusion, the muscle mechanoreflex plays a role in mediating vasoconstriction in the contralateral limb via sympathetic activation.
Journal
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- The Journal of Physical Fitness and Sports Medicine
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The Journal of Physical Fitness and Sports Medicine 2 (3), 381-384, 2013
The Japanese Society of Physical Fitness and Sports Medicine
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Details 詳細情報について
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- CRID
- 1390282680393327104
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- NII Article ID
- 10031179365
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- NII Book ID
- AA12573156
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- ISSN
- 21868123
- 21868131
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- NDL BIB ID
- 024738421
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed