EFFECTS OF ACUTE-HYPOXIA ON VENTILATORY RESPONSE AT THE ONSET OF SUBMAXIMAL EXERCISE

被引：4

作者：

MIYAMURA, M ^{[1
]}

XI, L ^{[1
]}

ISHIDA, K ^{[1
]}

SCHENA, F ^{[1
]}

CERRETELLI, P ^{[1
]}

机构：

[1] UNIV GENEVA,FAC MED,DEPT PHYSIOL,CH-1211 GENEVA 4,SWITZERLAND

来源：

JAPANESE JOURNAL OF PHYSIOLOGY | 1990年 / 40卷 / 03期

关键词：

hypocapnic hypoxia; onset of exercise; ventilatory response;

D O I：

10.2170/jjphysiol.40.417

中图分类号：

Q4 [生理学];

学科分类号：

071003 ;

摘要：

In order to investigate the effects of acute hypoxia and accompanying hypocapnia on the ventilatory response at the onset of dynamic exercise, four healthy adult men performed 50W rectangular loads on a cycle-ergometer in normoxic (FIO = 0.21) and hypoxic (FIO = 0.11) conditions. No statistically significant differences in the initial ventilatory responses to exercise (both ΔVI and ΔVE assessed on a breath-by-breath basis) were found between eucapnic normoxia (PETO ≈ 95, PETCO≈ 42 Torr) and hypocapnic hypoxia (PETO≈ 45, PETCO≈35 Torr). The present findings support the contention that the neurogenic ventilatory drive at the onset of early exercise is independent from PO and PCO. © 1990, PHYSIOLOGICAL SOCIETY OF JAPAN. All rights reserved.

引用

页码：417 / 422

页数：6

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