Sleep-wake differences in heart rate variability during a 105-day simulated mission to Mars

Abstract: Introduction: In prolonged space flights the effect of long-term confinement on the autonomic regulation of the heart is difficult to separate from the effect of prolonged exposure to microgravity or other space-related stressors. Our objective was to investigate whether the sleep-wake var...

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Autores principales: Vigo, Daniel Eduardo, Ogrinz, Barbara, Wan, Li, Bersenev, Evgeny, Tuerlinckx, Francis, Van den Bergh, Omer, Aubert, André E.
Formato: Artículo
Lenguaje:Inglés
Inglés
Publicado: Aerospace Medical Association 2019
Materias:
CONFINAMIENTO
SISTEMA NERVIOSO
FISIOLOGIA
ESPACIO
SUEÑO
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/1652
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139123456789-1652
record_format dspace
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
Inglés
topic CONFINAMIENTO
SISTEMA NERVIOSO
FISIOLOGIA
ESPACIO
SUEÑO
spellingShingle CONFINAMIENTO
SISTEMA NERVIOSO
FISIOLOGIA
ESPACIO
SUEÑO
Vigo, Daniel Eduardo
Ogrinz, Barbara
Wan, Li
Bersenev, Evgeny
Tuerlinckx, Francis
Van den Bergh, Omer
Aubert, André E.
Sleep-wake differences in heart rate variability during a 105-day simulated mission to Mars
topic_facet CONFINAMIENTO
SISTEMA NERVIOSO
FISIOLOGIA
ESPACIO
SUEÑO
description Abstract: Introduction: In prolonged space flights the effect of long-term confinement on the autonomic regulation of the heart is difficult to separate from the effect of prolonged exposure to microgravity or other space-related stressors. Our objective was to investigate whether the sleep-wake variations in the autonomic control of the heart are specifically altered by long-term confinement during the 105-day pilot study of the earth-based Mars500 project. Methods: Twenty-four-hour EKG records were obtained before (pre), during (T1: 30, T2: 70 and T3: 100 days), and after (post) confinement in the six crew members that participated in the mission. Sleep and wake periods were determined by fitting a square wave to the data. Autonomic activity was evaluated through time and frequency domain indexes of heart rate variability (HRV) analysis in wake and sleep periods. Results: During confinement, wake HRV showed decreased mean heart rate and increased amplitude at all frequency levels, particularly in the very low (pre: 13.3 ± 0.2; T1: 13.9 ± 0.3; T2: 13.9 ± 0.2; T3: 13.9 ± 0.2; post: 13.2 ± 0.2), and high (pre: 7.6 ± 0.4; T1: 8.3 ± 0.5; T2: 8.2 ± 0.4; T3: 8.1 ± 0.4; post: 7.6 ± 0.3) frequency components (values expressed as mean ± SE of wavelet power coefficients). Sleep HRV remained constant, while sleep-wake high frequency HRV differences diminished. Discussion: The observed autonomic changes during confinement reflect an increase in parasympathetic activity during wake periods. Several factors could account for this observation, including reduced daylight exposure related to the confinement situation.
format Artículo
author Vigo, Daniel Eduardo
Ogrinz, Barbara
Wan, Li
Bersenev, Evgeny
Tuerlinckx, Francis
Van den Bergh, Omer
Aubert, André E.
author_facet Vigo, Daniel Eduardo
Ogrinz, Barbara
Wan, Li
Bersenev, Evgeny
Tuerlinckx, Francis
Van den Bergh, Omer
Aubert, André E.
author_sort Vigo, Daniel Eduardo
title Sleep-wake differences in heart rate variability during a 105-day simulated mission to Mars
title_short Sleep-wake differences in heart rate variability during a 105-day simulated mission to Mars
title_full Sleep-wake differences in heart rate variability during a 105-day simulated mission to Mars
title_fullStr Sleep-wake differences in heart rate variability during a 105-day simulated mission to Mars
title_full_unstemmed Sleep-wake differences in heart rate variability during a 105-day simulated mission to Mars
title_sort sleep-wake differences in heart rate variability during a 105-day simulated mission to mars
publisher Aerospace Medical Association
publishDate 2019
url https://repositorio.uca.edu.ar/handle/123456789/1652
work_keys_str_mv AT vigodanieleduardo sleepwakedifferencesinheartratevariabilityduringa105daysimulatedmissiontomars
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AT bersenevevgeny sleepwakedifferencesinheartratevariabilityduringa105daysimulatedmissiontomars
AT tuerlinckxfrancis sleepwakedifferencesinheartratevariabilityduringa105daysimulatedmissiontomars
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bdutipo_str Repositorios
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