Effect of respiratory muscle training in hypoxia on endurance exercise performance

2016 Fiscal Year Final Research Report

• Project/Area Number: 26560348
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Sports science
• Research Institution: Nagoya University
• Principal Investigator: Katayama Keisho 名古屋大学, 総合保健体育科学センター, 教授 (40343214)
• Co-Investigator(Renkei-kenkyūsha): IWAMOTO Erika 札幌医科大学, 理学療法学科, 講師 (40632782)
• Research Collaborator: ITOH Yuka 名古屋大学, 大学院医学系研究科, 大学院生 ; GOTO Kanako 名古屋大学, 大学院医学系研究科, 大学院生 ; SHIMIZU Kaori 名古屋大学, 大学院教育発達科学研究科, 大学院生 ; TAKAO Kenji 立命館大学, 大学院スポーツ健康科学研究科, 大学院生 ; KASAI Nobukazu 立命館大学, 大学院スポーツ健康科学研究科, 大学院生 ; SUMI Daichi 立命館大学, 大学院スポーツ健康科学研究科, 大学院生 ; MORI Hisashi 日本学術振興会, 特別研究員 (90794298)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 呼吸筋 / 低酸素 / 運動パフォーマンス / 持久力 / 代謝受容器反射

Outline of Final Research Achievements

The purpose of the present study was to clarity the effect of respiratory muscle endurance training in hypoxia on respiratory muscle-induce metaboreflex. Collegiate male endurance runners assigned to a normoxic or hypoxic group. Before and after 6 weeks of respiratory muscle endurance training, cardiovascular response to an incremental respiratory endurance test was measured. Minute ventilation during the training increased progressively. Target SpO2 in the hypoxic group set at 80%. The change arterial blood pressure during the incremental respiratory endurance test reduced significantly after the training in both groups. No significant difference in arterial blood pressure during hyperpnoea was found after the training between the two groups. These results suggest respiratory muscle-induced metaboreflex is attenuate by respiratory muscle endurance training, but no additional effect appears when the training is performed under hypoxic conditions.

Free Research Field

運動生理学