| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Influence of mild hypoxia on cardiorespiratory responses and muscle oxygenation during incremental exercise |
|
言語 |
en |
| 作成者 |
Sekikawa, Kiyokazu
Tabusadani, Mitsuru
Tabira, Kazuyuki
Kawaguchi, Kotaro
Onari, Kiyoshi
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
near-infrared spectroscopy |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
hypoxia |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
incremental exercise |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
490 |
| 内容記述 |
|
|
内容記述 |
This study investigated the influence of cardiorespiratory responses, blood lactate concentration and muscle oxygenation during incremental exercise tests in normoxia and hypoxia. Seven healthy subjects performed an incremental cycle ergometer exercise test breathing in random order either room air or a 15% O2 gas mixture. Ventilation and pulmonary gas exchange were measured and computed breath-bybreath. Arterial oxygen saturation (SaO2) was estimated continuously via pulse oxymeter. Forearm venous blood for measurement of blood lactate was collected every minute. Continuous-wave near infrared spectroscopy measured peripheral tissue saturation (SO2NIRS) in the vastus lateralis muscle. Significant reduction in oxygen uptake (p<0.01), power output (p<0.01) and SaO2 (p<0.001) was found in peak incremental exercise during hypoxia compared with normoxia. For the same power output in the twoconditions, hypoxia significantly decreased SaO2 (ANOVA: p<0.001) and blood lactate concentration (ANOVA: p<0.05) and increased minute ventilation (ANOVA: p<0.01). In the hypoxic condition, oxygen uptake and SO2NIRS were not found when exercising at the same power output compared with normoxia. This study would suggest that mild hypoxia may be avoided through ventilatory compensation at the alveolar level, and oxygen consumption in alveolar and peripheral tissue oxygenation can be maintained while exercising for the same power output. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Graduate School of Health Sciences, Hiroshima University |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| ID登録 |
|
|
ID登録 |
10.15027/241 |
|
ID登録タイプ |
JaLC |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1347-7323 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11601063 |
| 開始ページ |
|
|
開始ページ |
85 |
| 書誌情報 |
広島大学保健学ジャーナル
Journal of health sciences, Hiroshima University
巻 2,
号 1,
p. 85-89,
発行日 2002-09-30
|
| 旧ID |
241 |
Hirodai-Hokengaku-J_2-1_85-89_2002-9-30.pdf (68.0 KB)
