Effects of hypoxia on muscle glycogen metabolism during exercise and recovery

• Project/Area Number: 25750340
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Sports science
• Research Institution: Juntendo University (2016); National Agency for the Advancement of Sports and Health (2013-2015)
• Principal Investigator: OSAWA TAKUYA 順天堂大学, COIプロジェクト室, 博士研究員 (70613496)
• Research Collaborator: TAKAHASHI Hideyuki 国立スポーツ科学センター, スポーツ研究部, 主任研究員 (00292540)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: グリコーゲン / 磁気共鳴分光法 / MRI / MRS / スプリント運動 / 睡眠 / 高所環境 / 自転車運動 / 低酸素 / スプリント / 全力スプリント / 筋グリコーゲン / 間欠的運動

Outline of Final Research Achievements

The aim of this KAKEN studies was to examine how hypoxia influenced the change of muscle glycogen during exercise and recovery. The study 1 elucidated that during the repeated-sprint exercise tests, the decrement rate of muscle glycogen tended to be lower under hypoxic than normoxic conditions. The study 2 revealed that the recovery rate of muscle glycogen during sleep after exercise was lower under hypoxic than normoxic conditions.

Research Products

• [Presentation] 低酸素環境は筋グリコーゲンの回復を遅延させるか？ (2016)
  • Author(s): 大澤拓也、高橋英幸
  • Organizer: 日本体力医学会大会
  • Place of Presentation: いわて県民情報交流センター
  • Year and Date: 2016-09-23