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Effects of hyperventilation on corticospinal excitability of lower limb muscle during high-intensity exercise

Research Project

Project/Area Number 26350694
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Developmental mechanisms and the body works
Research InstitutionHokkaido University

Principal Investigator

Yunoki Takahiro  北海道大学, 教育学研究院, 准教授 (00352500)

Co-Investigator(Kenkyū-buntansha) 大塚 吉則  北海道大学, 教育学研究院, 教授 (70233187)
松浦 亮太  上越教育大学, 大学院学校教育研究科, 准教授 (10551278)
Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords呼吸 / 皮質脊髄路興奮性 / 高強度運動 / 随意呼吸 / 運動 / 呼吸筋疲労 / 呼吸努力 / 呼吸亢進
Outline of Final Research Achievements

The aim of this study was to determine the relationship between hyperventilation and corticospinal excitability of lower limb muscle during high-intensity exercise. Motor-evoked potentials (MEPs) induced by transcranial magnetic stimulation were recorded in the vastus lateralis during cycling exercise to assess the corticospinal excitability of lower limb. MEPs were increased by voluntary breathing condition (VB) during low-intensity exercise (30%VO2max). On the other hand, there was no significant difference in MEPs between normal breathing condition (NB) and VB during high-intensity exercise (70-80%VO2max). In endurance trained subjects, MEPs decreased significantly during high-intensity exercise in NB. However, such a decrease in MEPs were not shown in VB. These results suggest that some parts of breathing during high-intensity exercise are caused by activation of the breathing-associated cortical areas, increasing corticospinal excitability of lower limb muscle.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report

Research Products

(3 results)

All 2017

All Presentation (3 results)

  • [Presentation] 吸気筋疲労が活動肢の皮質脊髄路興奮性に及ぼす影響2017

    • Author(s)
      波多野慶, 白川和希, 柚木孝敬
    • Organizer
      第25回日本運動生理学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 下肢における筋収縮強度と皮質脊髄路興奮性の関係に随意呼吸が及ぼす影響2017

    • Author(s)
      白川和希, 波多野慶, 柚木孝敬
    • Organizer
      第25回日本運動生理学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 外部死腔付加と組み合わされた運動トレーニングが運動時の換気応答に及ぼす影響2017

    • Author(s)
      川島将人, 徐成竹, 柚木孝敬
    • Organizer
      第72回日本体力医学会大会
    • Related Report
      2017 Annual Research Report

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Published: 2014-04-04   Modified: 2019-03-29  

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