Effect of respiratory muscle activation on cardiovascular regulation during exericse

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03079
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Sports science
• Research Institution: Nagoya University
• Principal Investigator: Keisho Katayama 名古屋大学, 総合保健体育科学センター, 教授 (40343214)
• Co-Investigator(Kenkyū-buntansha): 石田 浩司 名古屋大学, 総合保健体育科学センター, 教授 (50193321) ; 齊藤 満 愛知学院大学, 心身科学部, 客員教授 (80126862)
• Co-Investigator(Renkei-kenkyūsha): Saito Mitsuru 豊田工業大学, 名誉教授 (80126862)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 呼吸筋 / 運動 / 筋交感神経活動 / 筋代謝受容器反射

Outline of Final Research Achievements

In this study, we attempted to clarify the effects of respiratory muscle activation on cardiovascular regulation. Study 1: Significant increases in arterial blood pressure and sympathetic vasomotor outflow appeared during exercise with expiratory resistance. Study 2: The increase in arterial blood pressure (ABP) during hyperpnoea was lower in young men compared to men. Study 3: During leg cycling with inspiratory resistive breathing, sympathetic vasomotor outflow was increased, accompanied by an increase in ABP. Young women, compared with age-matched men, had less of an increase in ABP. These results suggest that the attenuated inspiratory muscle-induced metaboreflex during exercise in young women could be attributed, in part, to a lesser sympathetic vasomotor outflow.

Free Research Field

運動生理学