The factor of individual difference of the magnitude of decrease in VO2max in hypoxia

2016 Fiscal Year Final Research Report

• Project/Area Number: 26750305
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Sports science
• Research Institution: Osaka Kyoiku University
• Principal Investigator: OGAWA Takeshi 大阪教育大学, 教育学部, 講師 (70451698)
• Research Collaborator: NISHIYASU Takeshi 筑波大学, 体育系, 教授 (90237751)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 低酸素 / 呼吸 / 呼吸筋 / トレーニング / 有酸素能力

Outline of Final Research Achievements

This project was aimed to clarified the mechanisms responsible for the individual difference of the magnitude of decrease in the maximal oxygen uptake (VO2max) in acute hypoxia, especially focusing the respiratory muscle activity. At first, regarding gender, female showed that the lower ventilatory respiratory muscle work efficiency and grater decrease in VO2max in hypoxia compared with male. Secondly, the magnitude of decrease in VO2max in hypoxia became smaller by enhancing the respiratory muscle strength with the respiratory muscles training. The present results suggest that the individual differences in the decrease of aerobic capacity in acute hypoxia is influenced by respiratory muscle activity. Moreover, it is possiblety that the respiratory muscle training could be applied for safyt altitude training.

Free Research Field

運動生理学