TY - JOUR
T1 - Effects of lung volume and trigeminal nerve stimulation on diving response in breath-hold divers and non-divers
AU - Peng, Heng
AU - Oikawa, Satoshi
AU - Inai, Yuto
AU - Maeda, Seiji
AU - Akama, Takao
N1 - Funding Information:
The authors would like to thank the divers for their enthusiastic participation. The authors would also like to thank Editage (www.editage.com) for English language editing. The authors declare that they have no conflicts of interest.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/9
Y1 - 2022/9
N2 - Purpose: This study investigated the effects of lung volume and trigeminal nerve stimulation (TS) on diving responses in breath-hold divers (BHDs) and non-divers (NDs). Methods: Eight BHDs and nine NDs performed four breath-hold trials at different lung volumes, with or without TS, and one trial of TS. Haemodynamic parameters and electrocardiograms were measured for each trial. Results: During the TS trial, the total peripheral resistance increased more in BHDs. Breath-hold performed at total lung capacity showed a more pronounced decrease in stroke volume and cardiac output in BHDs. The decrease in heart rate and increase in total peripheral resistance were more pronounced in BHDs when breath-holding was performed with TS. Conclusion: The more pronounced diving response in BHDs was attributed to the greater increase in total peripheral resistance caused by TS. Furthermore, the lower stroke volume and cardiac output in BH performed at total lung capacity could also cause a more pronounced diving response in BHDs.
AB - Purpose: This study investigated the effects of lung volume and trigeminal nerve stimulation (TS) on diving responses in breath-hold divers (BHDs) and non-divers (NDs). Methods: Eight BHDs and nine NDs performed four breath-hold trials at different lung volumes, with or without TS, and one trial of TS. Haemodynamic parameters and electrocardiograms were measured for each trial. Results: During the TS trial, the total peripheral resistance increased more in BHDs. Breath-hold performed at total lung capacity showed a more pronounced decrease in stroke volume and cardiac output in BHDs. The decrease in heart rate and increase in total peripheral resistance were more pronounced in BHDs when breath-holding was performed with TS. Conclusion: The more pronounced diving response in BHDs was attributed to the greater increase in total peripheral resistance caused by TS. Furthermore, the lower stroke volume and cardiac output in BH performed at total lung capacity could also cause a more pronounced diving response in BHDs.
KW - Diving response
KW - Lung volume
KW - Trigeminal nerve stimulation
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U2 - 10.1016/j.resp.2022.103918
DO - 10.1016/j.resp.2022.103918
M3 - Article
C2 - 35550439
AN - SCOPUS:85130507469
SN - 1569-9048
VL - 303
JO - Respiratory Physiology and Neurobiology
JF - Respiratory Physiology and Neurobiology
M1 - 103918
ER -