[abstract] EFFECTS OF ONE WEEK OF DAILY APNEA TRAINING IN HUMANS.

Rubicon Research Repository/Manakin Repository

[abstract] EFFECTS OF ONE WEEK OF DAILY APNEA TRAINING IN HUMANS.

Show full item record


Title: [abstract] EFFECTS OF ONE WEEK OF DAILY APNEA TRAINING IN HUMANS.
Author: Sahlin, L; Krohn, T; Sedin, M; Schagatay, E
Abstract: INTRODUCTION: Long term training of apnea has been shown to increase human apneic time and diving response (Schagatay et al, subm). Our aim was to study the effects of one week of daily apnea training on apneic time and cardiovascular adjustments during apnea in humans. METHODS: The volunteers were 9 subjects, 5 men and 4 women at a mean age of 28 yr. All subjects were healthy non divers. Simulated diving was performed during prone rest, by five apneas with facial immersion in cold water at two minutes intervals. Cardiovascular and respiratory parameters were registered continuously using non invasive methods. Hemoglobin concentration was measured before and after apneas by capillary blood samples. The two phases of apnea were identified by registrating the thoracic movements and detecting the onset of involuntary breathing movements (physiological breaking point), which ends the "easy going phase" (EP). Training of apnea was done by performing five maximal effort apneas daily, spaced by two minutes of rest. Retesting was done after one week of training. RESULTS: After apnea training, apneic time had increased by 29% (p<0.001), by an increase of the EP of 42% (p<0.001). Thus, after the training there was a delay of the physiological breaking point, which is mainly determined by the arterial pCO2. The heart rate reduction had increased after apnea training (p<0.01), while there was no change of the skin capillary blood flow reduction. The increase of the hemoglobin concentration after five apneas tended to be greater after the training (p=0.08). CONCLUSIONS: We concluded that even a short period of apnea training may induce increases of apneic time, diving response and hematological reaction during apnea in previously untrained subjects. REFERENCE: Schagatay E, van Kampen M, Emanuelsson S, Holm B (subm: Eur J Appl Physiol) Effects of physical- and apnea training on apneic time and the diving response in humans.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/6741
Date: 2000

Files in this item

Files Size Format View
abstract.txt 193bytes Text file View/Open

This item appears in the following Collection(s)

  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

Show full item record

Browse

My Account