Thermoregulation during intermittent exercise in the heat

• Project/Area Number: 26882026
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Sports science
• Research Institution: Kobe University
• Principal Investigator: Amano Tatsuro 神戸大学, 人間発達環境学研究科, 研究員 (60734522)
• Project Period (FY): 2014-08-29 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 体温調節 / 発汗量 / 皮膚血流量 / 食道温 / 熱中症 / 間欠運動

Outline of Final Research Achievements

To investigate the characteristics of thermoregulation during intermittent exercise, 10 young male performed 50%VO2max cycling exercise (30 s exercise + 30 s rest and 180s exercise + 180s rest) for 60 minutes as well as continuous exercise for 30 minutes at the same exercise intensity. Results showed that the intermittent exercises do not affect the elevation of esophageal temperature while it reduces sweat rate and skin blood flow compared with normal continuous exercise at the same exercise intensity. We also revealed that muscle metaboreceptors activation which influence heat loss responses during intermittent exercise would modify both sweating and cutaneous vasodilation during passive heat stress. The influence of muscle metaboreceptors activation on sweating response seems larger than that of muscle mechanoreflex.

Research Products

• [Int'l Joint Research] University of uOttawa(Canada)
• [Journal Article] Determination of the maximum rate of eccrine sweat glands' ion reabsorption using the galvanic skin conductance to local sweat rate relationship (2016)
  • Author(s): Amano T, Gerrett N, Inoue Y, Nishiyasu T, Havenith G, and Kondo N
  • Journal Title: European Journal of Applied Physiology Volume: 未定
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Influence of forearm muscle metaboreceptors activation on sweating and cutaneous vascular responses during dynamic exercise (2016)
  • Author(s): Amano T, Ichinose M, Inoue Y, Nishiyasu T, Koga S, Kenny G, Kondo N
  • Journal Title: Am J Physiol Regul Integr Comp Physiol Volume: 309 Issue: 11 Pages: 1332-1339
  • DOI: 10.1152/ajpregu.00545.2015
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The Spatial Distribution of Absolute Skeletal Muscle Deoxygenation During Ramp-Incremental Exercise Is Not Influenced by Hypoxia (2016)
  • Author(s): Bowen TS, Koga S, Amano T, Kondo N, Rossiter HB
  • Journal Title: Advances in Experimental Medicine and Biology Volume: 876 Pages: 19-26
  • DOI: 10.1007/978-1-4939-3023-4_2
  • ISBN: 9781493930227, 9781493930234
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] ヒトの体温調節特性を生かしたスポーツウェアの開発 (2016)
  • Author(s): 天野達郎，島名孝次，堀川直幹，Nicola Gerrett，近藤徳彦
  • Journal Title: 臨床スポーツ医学 Volume: 33 Pages: 313-315
• [Journal Article] Modulation of muscle metaboreceptor activation upon sweating and cutaneous vascular responses to rising core temperature in humans. (2015)
  • Author(s): Amano T, Ichinose M, Inoue Y, Nishiyasu T, Koga S, Kondo N.
  • Journal Title: Am J Physiol Regul Integr Comp Physiol. Volume: 308 Issue: 12 Pages: 990-997
  • DOI: 10.1152/ajpregu.00005.2015
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Sweating response to passive stretch of the calf muscle during activation of forearm muscle metaboreflex in heated humans (2014)
  • Author(s): Amano T, Ichinose M, Miwa M, Inoue Y, Nishiyasu T, and Kondo N.
  • Journal Title: American Journal of Physiology Regulatory, Integrative and Comparative Physiology Volume: 306 Pages: 728-734
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Muscle O2 extraction reserve during intense cycling is site-specific (2014)
  • Author(s): Spencer MD, Amano T, Kondo N, Kowalchuk JM, and Koga S
  • Journal Title: Journal of Applied Physiology Volume: 117 Pages: 1199-1206
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Muscle metaborefelx and heat loss responses during exercise and exercise training (2016)
  • Author(s): Tatsuro Amano and Narihio Kondo
  • Organizer: Human High Performance International Forum
  • Place of Presentation: 筑波大学
  • Year and Date: 2016-03-03
  • Int'l Joint Research / Invited
• [Presentation] 前腕部における筋代謝受容器活動が自転車運動時の熱放散反応に及ぼす影響 (2015)
  • Author(s): 天野 達郎，一之瀬 真志，井上 芳光，西保 岳，近藤 徳彦
  • Organizer: 第７０回日本体力医学会
  • Place of Presentation: 和歌山
  • Year and Date: 2015-09-18
• [Presentation] 運動時の体温調節特性と運動トレーニングがそれに及ぼす影響：筋代謝受容器活動に着目して (2015)
  • Author(s): 天野達郎
  • Organizer: 第29回 呼吸研究会および運動と循環研究会
  • Place of Presentation: 和歌山
  • Year and Date: 2015-09-17
  • Invited
• [Presentation] 運動時の体温調節特性と運動トレーニング効果 (2015)
  • Author(s): 天野達郎
  • Organizer: 2015年度生理人類学会夏季セミナー，体温調節研究部会
  • Place of Presentation: 京都
  • Year and Date: 2015-09-07
  • Invited
• [Presentation] Effects of forearm muscle metaboreceptors activation on sweating and cutaneous vascular responses during passive heating and cycle exercising in humans (2015)
  • Author(s): Amano T, Inoue Y, Nishiyasu T, Kenny GP, and Kondo N
  • Organizer: The 16th International Conference on Environmental Ergonomics
  • Place of Presentation: Portsmouth, United Kingdom
  • Year and Date: 2015-06-28
  • Int'l Joint Research
• [Presentation] 筋代謝受容器活動が安静温熱負荷時の熱放散反応に及ぼす影響 (2014)
  • Author(s): 天野 達郎，一之瀬 真志，井上 芳光，西保 岳，古賀 俊策，近藤 徳彦
  • Organizer: 第71回 日本生理人類学会
  • Place of Presentation: 兵庫
  • Year and Date: 2014-11-01
• [Presentation] 局所発汗量と皮膚コンダクタンス関係から汗腺の塩分再吸収能力を評価する試み (2014)
  • Author(s): 天野 達郎，井上 芳光，西保 岳，近藤 徳彦
  • Organizer: 第69回 日本体力医学会
  • Place of Presentation: 長崎
  • Year and Date: 2014-09-19
• [Book] ニュー運動生理学Ⅱ (2015)
  • Author(s): 天野 達郎，近藤 徳彦
  • Total Pages: 7
  • Publisher: 真興交易
• [Book] 人間科学の百科事典 (2015)
  • Author(s): 天野 達郎，近藤 徳彦
  • Total Pages: 6
  • Publisher: 丸善出版