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September 1, 2000Acta Physiologica Scandinavica

Hyperbaric oxygen increases parasympathetic activity in professional divers

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Why the study?

Does hyperbaric oxygen increase parasympathetic activity compared to hyperbaric air in professional divers?

Population

10 professional divers

Comparison

Hyperbaric oxygen (HBO), 100% oxygen at 2.5 ATA vs Hyperbaric air (HBAIR), O(2) 21% at 2.5 ATA

Design

Other

Authors

LLLund LundKKentalaHSHarry Scheinin

Discussion

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Overview

May indicate vagal enhancement during HBO in divers; leaves open clinical relevance and needs larger validation.

Structured PICO

Does hyperbaric oxygen increase parasympathetic activity compared to hyperbaric air in professional divers?

P
Population
10 professional divers
I
Intervention
Hyperbaric oxygen (HBO), 100% oxygen at 2.5 ATA
C
Comparator
Hyperbaric air (HBAIR), O(2) 21% at 2.5 ATA
O
Outcome
Autonomic nervous system activity evaluated by power-spectral analysis of heart-rate variability (HRV)surrogate

Hyperbaric oxygen at 2.5 ATA significantly increases parasympathetic tone compared to hyperbaric air in professional divers.

Cite This Study

Lund et al. (2000) studied this question.

synapsesocial.com/papers/6a00a855e4618ba4162db613https://doi.org/10.1046/j.1365-201x.2000.00761.x
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Also Consider

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  1. 1Heart rate variability: Standards of measurement, physiological interpretation, and clinical use1996 · 15,376 citations
  2. 2Power spectral analysis of heart rate and arterial pressure variabilities as a marker of sympatho-vagal interaction in man and conscious dog.1986 · 4,138 citations
  3. 3EFFECTS OF OXYGEN BREATHING ON THE HEART RATE, BLOOD PRESSURE, AND CARDIAC INDEX OF NORMAL MEN—RESTING, WITH REACTIVE HYPEREMIA, AND AFTER ATROPINE*1962 · 166 citations
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