| Project/Area Number |
21700653
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Sports science
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| Research Institution | Shinshu University |
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Principal Investigator |
KAMIJO Yoshi-Ichiro Shinshu University, 大学院・医学系研究科, 助教 (40372510)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | 圧反射性皮膚血管拡張 / 皮膚交感神経活動 / 皮膚血流量 / 血液量 / 心周期 / 暑熱トレーニング |
|---|
| Research Abstract |
It is well known that plasma volume (PV) expansion induced by heat acclimation enhances cutaneous vasodilation in hyperthermic humans. On the other hand, we have found that there was a component synchronizing with cardiac cycle in 1.1-1.3s latency after a given R-wave, which increased with the increase in esophageal temperature, and the increase was significantly suppressed by hypovolemia. In the present study, we have proved that an increase in the synchronizing component in hyperthermia was enhanced by PV expansion with heat acclimation, and the enhancement might be associated with an enhancement of cutaneous vasodilation in hyperthermia after heat acclimation.
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