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November 1, 1984Journal of Applied Physiology

Hypoxemia increases plasma catecholamine concentrations in exercising humans

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Why the study?

Does hypoxemia increase plasma catecholamine concentrations during exercise in men?

Population

7 men

Comparison

Exercise for 15 min at three loads while… vs Exercise for 15 min at three loads while…

Design

Other

Follow-up

15 minutes per exercise load

Authors

PEPierre EscourrouCenter for Research and InterdisciplinarityDJDavid G. JohnsonDartmouth CollegeLRL. B. RowellCross-Cutting Cardiology

Discussion

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Overview

Heightens sympathetic drive during hypoxemic exercise; leaves open clinical relevance in hypoxic patients.

Structured PICO

Does hypoxemia increase plasma catecholamine concentrations during exercise in men?

P
Population
7 men
I
Intervention
Exercise for 15 min at three loads (40 to 88% of maximal O2 uptake) while breathing 11-12% O2 (hypoxemia)
C
Comparator
Exercise for 15 min at three loads while breathing room air (normoxia)
O
Outcome
Plasma catecholamine concentrations (norepinephrine and epinephrine)surrogate

Hypoxemia during exercise significantly increases sympathetic nervous activity as measured by elevated plasma catecholamine concentrations.

Cite This Study

Escourrou et al. (1984) studied this question.

synapsesocial.com/papers/6a9197192d14ef2b6ea16f3ehttps://doi.org/10.1152/jappl.1984.57.5.1507
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Hypoxemia raises muscle sympathetic activity but not norepinephrine in resting humans1989 · 174 citations
  2. 2Arterial Catecholamines in Hypoxic Exercise in Man1975 · 26 citations
  3. 3Relationship among Blood Lactate and Plasma Catecholamine Levels during Exercise in Acute Hypoxia.1995 · 6 citations
  4. 4Norepinephrine clearance is increased during acute hypoxemia in humans1991 · 119 citations
  5. 5Plasma norepinephrine response to exercise before and after training in humans1981 · 145 citations