Is bradycardia with diving reflex cardiovascular risk index?

2014 Fiscal Year Final Research Report

• Project/Area Number: 25560376
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Applied health science
• Research Institution: Kokushikan University
• Principal Investigator: KAWANO Hiroshi 国士舘大学, 文学部, 講師 (40508256)
• Co-Investigator(Renkei-kenkyūsha): SAKAMOTO Shizuo 早稲田大学, スポーツ科学部, 教授 (00266032) ; GANDO Yuko 独立行政法人国立健康・栄養研究所, 健康増進研究部, 研究員 (60613932) ; KONISHI Masayuki 早稲田大学, スポーツ科学部, 助教 (10711187)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 潜水反射徐脈 / 循環器系疾患リスク / 加齢

Outline of Final Research Achievements

First, we determined whether there is circadian rhythm for bradycardia with diving reflex. Our study found lower heart rate to diving reflex in morning than that in daytime and early-evening, suggesting that it is necessary to consider circadian rhythm when performing diving reflex.
Second, we determined effect of aging on bradycardia with diving reflex. The results of the present study indicated that bradycardia with diving reflex in older was lower compared with that in young men. That is, diving reflex bradycardia is affected by aging. Therefore, this suggests that diving reflex bradycardia may be cardiovascular risk index.

Free Research Field

運動生理学