Relationship between oxygenation in inactive biceps brachii muscle and hyperventilation during leg cycling

Title:

Relationship between oxygenation in inactive biceps brachii muscle and hyperventilation during leg cycling

Creator:

Ogata, Hisayoshi, Arimitsu, T., Matsuura, R., Yunoki, T., Horiuchi, M., and Yano, T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7437c557-e862-4e88-bb99-468cae9f6cf4
uuid:7437c557-e862-4e88-bb99-468cae9f6cf4
issn:0862-8408

Subject:

Fyziologie člověka a srovnávací fyziologie, fyziologie, svaly horních končetin, dýchání, human physiology, upper limb muscles, respiration, nadměrné dýchání, dodávka kyslíku, hyperventilation, oxygen supply, arterial carbon dioxide pressure, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

Inactive forearm muscle oxygenation has been reported to begin decreasing from the respiratory compensation point (RCP) during ramp leg cycling. From the RCP, hyperventilation occurs with a decrease in arterial CO2 pressure (PaCO2). The aim of this study was to determine which of these two factors, hyperventilation or decrease in PaCO2, is related to a decrease in inactive biceps brachii muscle oxygenation during leg cycling. Each subject (n = 7) performed a 6-min two-step leg cycling. The exercise intensity in the first step (3 min) was halfway between the ventilatory threshold and RCP (170±21 watts), while that in the second step (3 min) was halfway between the RCP and peak oxygen uptake (240±28 watts). The amount of hyperventilation and PaCO2 were calculated from gas parameters. The average cross correlation function in seven subjects between inactive muscle oxygenation and amount of hyperventilation showed a negative peak at the time shift of zero (r = -0.72, p<0.001), while that between inactive muscle oxygenation and calculated PaCO2 showed no peak near the time shift of zero. Thus, we concluded that decrease in oxygenation in inactive arm muscle is closely coupled with increase in the amount of hyperventilation., H. Ogata, T. Arimitsu, R. Matsuura, T. Yunoki, M. Horiuchi, T. Yano., and Obsahuje bibliografii a bibliografické odkazy

Language:

English

Rights:

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

Source:

Physiological research | 2007 Volume:56 | Number:1

Harvested from:

CDK

Metadata only:

false