Effect of work intensity on time delay in mediation of ventilation by arterial carbon dioxide during recovery from impulse exercise

Title:

Effect of work intensity on time delay in mediation of ventilation by arterial carbon dioxide during recovery from impulse exercise

Creator:

Afroundeh, R., Arimitsu, T., Yamanaka, R., Lian, C. S., Shirakawa, K., Yunoki, T., and Yano, T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:8e717efa-29ef-401a-a94e-b293e128ae3c
uuid:8e717efa-29ef-401a-a94e-b293e128ae3c
issn:0862-8408

Subject:

Fyziologie člověka a srovnávací fyziologie, větrání, ventilation, arterial CO2 pressure, impulse-like exercise, time delay, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

Time delay in the mediation of ventilation (VE) by arterial CO2 pressure (PaCO2) was studied during recovery from short impulse-like exercises with different work loads of recovery. Subjects performed two tests including 10-s impulse like exercise with work load of 200 watts and 15-min recovery with 25 watts in test one and 50 watts in test two. V . E, end tidal CO2 pressure (PETCO2) and heart rate (HR) were measured continuously during rest, warming up, exercise and recovery. PaCO2 was estimated from PETCO2 and tidal volume (VT). Results showed that predicted arterial CO2 pressure (PaCO2 pre) increased during recovery in both tests. In both tests, VE increased and peaked at the end of exercise. VE decreased in the first few seconds of recovery but started to increase again. The highest correlation coefficient between PaCO2 pre and V . E was obtained in the time delay of 7 s (r=0.854) in test one and in time delays of 6 s (r=0.451) and 31 s (r=0.567) in test two. HR was significantly higher in test two than in test one. These results indicate that PaCO2 pre drives VE with a time delay and that higher work intensity induces a shorter time delay., R. Afroundeh, T. Arimitsu, R. Yamanaka, C. S. Lian, K. Shirakawa, T. Yunoki, T. Yano., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2014 Volume:63 | Number:4

Harvested from:

CDK

Metadata only:

false