| Heart rate variability, cardiac mechanics, and subjectively evaluated stress during simulator flight. | |
| | |
MedLine Citation:
|
PMID: 6626075 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The effects of a simulator flight task on the heart rate variation (HRV) and hemodynamic variables were studied in nine pilots with instrument flight ratings. An electrocardiogram (ECG), phonocardiogram (PCG), and impedance cardiogram (ICG) were recorded continuously during three successive flights. Indices of HRV, power spectra, and autocorrelograms were computed from the R-R interval signal. Stroke volume (SV), cardiac output (CO), and systolic time intervals (STI) were determined by means of the ECG, PCG, and ICG. A scaling method for a subjective evaluation of tiredness, effort, and success during the flight was used. The repeats of the flight task decreased the heart rate (HR), CO, and cardiac index (CI). The different phases of the flight altered the HR (mean 97 min-1, S.E.M. 4 min-1), total HRV (RMSM) (mean 33 ms, S.E.M. 5 ms), and the periodic HRV. Subjectively, the pilots felt only moderate stress. The subjectively evaluated tiredness was significantly associated with the STI. Moderate informative stress in the flight simulator affected the chronotropic parameters of the heart. The inotropic state of the heart was not affected by the different phases of the flight but possibly by the diminishing sympathetic drive with accommodation during the repeats. |
| | |
Authors:
|
A Lindqvist; E Keskinen; K Antila; L Halkola; T Peltonen; I Välimäki |
Related Documents
:
|
8042895 - Power spectral analysis of blood pressure fluctuations during sleep in normal and decer... 9146855 - The acute effects of inhaled salbutamol on the beat-to-beat variability of heart rate a... 1928405 - Transfer function analysis of the circulation: unique insights into cardiovascular regu... 9751685 - Voltage-dependent calcium channel promoter restores baroreflex sensitivity in conscious... 16797665 - Acoustic wave propagation in high-pressure system. 18224555 - Increased nocturnal sodium excretion in obstructive sleep apnoea. relation to nocturnal... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Aviation, space, and environmental medicine Volume: 54 ISSN: 0095-6562 ISO Abbreviation: Aviat Space Environ Med Publication Date: 1983 Aug |
Date Detail:
|
Created Date: 1983-11-23 Completed Date: 1983-11-23 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 7501714 Medline TA: Aviat Space Environ Med Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 685-90 Citation Subset: IM; S |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aerospace Medicine Aviation Fatigue Heart Rate* Humans Middle Aged Stress, Psychological / physiopathology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Salicylate pharmacokinetics in the dog at 6 ATA in air and at 2.8 ATA in 100% oxygen.
Next Document: Effects of strength training on G tolerance.