Impact of supine exercise on muscle deoxygenation kinetics heterogeneity: mechanistic insights into slow pulmonary oxygen uptake dynamics

Autor:	Tze-Huan Lei, Narihiko Kondo, David C. Poole, Simon Marwood, Dai Okushima, Thomas J. Barstow, Richie P. Goulding, Shunsaku Koga
Rok vydání:	2020
Předmět:	Male Supine position Oxidative metabolism Pulmonary Gas Exchange Physiology Chemistry Kinetics Oxygen uptake Oxygen Oxygen Consumption Physiology (medical) Exercise Test Biophysics Oxygen delivery Humans Muscle Skeletal Exercise Deoxygenation
Zdroj:	Journal of Applied Physiology. 129:535-546
ISSN:	1522-1601 8750-7587
DOI:	10.1152/japplphysiol.00213.2020
Popis:	We show that supine exercise causes a greater degree of muscle deoxygenation in both deep and superficial muscle and increases the spatial heterogeneity of muscle deoxygenation. Therefore, this study suggests that any O2 delivery gradient toward deep versus superficial muscle is insufficient to mitigate impairments in oxidative function in response to reduced whole muscle O2 delivery. More heterogeneous muscle deoxygenation is associated with slower V̇o2 kinetics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e84fbdfa17020715e819893c00967913 https://doi.org/10.1152/japplphysiol.00213.2020 Zobrazit plný text záznamu