Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic
Human adaptation to unknown and extreme environments requires changes in the psychological and physical homeostasis. We previously reported a significant decrease of anterior pituitary and adrenal hormonal levels and a significant modification of psychophysiological correlates of stress, such as gal...
Published in: | International Journal of Psychophysiology |
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Online Access: | http://hdl.handle.net/11573/101620 https://doi.org/10.1016/s0167-8760(03)00074-6 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000184419400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0038012484&partnerID=65&md5=b6481bb2e7f1407522e7a75587fa0d8b |
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ftunivromairis:oai:iris.uniroma1.it:11573/101620 2024-02-27T08:33:19+00:00 Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic S. Farrace M. Ferrara C. De Angelis R. Trezza P. Cenni A. Peri CASAGRANDE, Maria DE GENNARO, Luigi S., Farrace M., Ferrara C., De Angeli R., Trezza P., Cenni A., Peri Casagrande, Maria DE GENNARO, Luigi 2003 STAMPA http://hdl.handle.net/11573/101620 https://doi.org/10.1016/s0167-8760(03)00074-6 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000184419400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0038012484&partnerID=65&md5=b6481bb2e7f1407522e7a75587fa0d8b eng eng ELSEVIER SCIENCE BV info:eu-repo/semantics/altIdentifier/pmid/12853127 info:eu-repo/semantics/altIdentifier/wos/WOS:000184419400002 volume:49 issue:1 firstpage:17 lastpage:27 numberofpages:11 journal:INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY http://hdl.handle.net/11573/101620 doi:10.1016/s0167-8760(03)00074-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0038012484 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000184419400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0038012484&partnerID=65&md5=b6481bb2e7f1407522e7a75587fa0d8b antarctica autonomic nervous system circadian rhythm extreme environment hormone hrv spectral analysi neurovegetative trophotropic info:eu-repo/semantics/article 2003 ftunivromairis https://doi.org/10.1016/s0167-8760(03)00074-6 2024-01-31T17:59:27Z Human adaptation to unknown and extreme environments requires changes in the psychological and physical homeostasis. We previously reported a significant decrease of anterior pituitary and adrenal hormonal levels and a significant modification of psychophysiological correlates of stress, such as galvanic skin response, after exposure to Antarctica, suggesting a possible decrease of individual arousal. The latter was hypothesized to be correlated with a modification of autonomic balance, mainly represented by a possible reduction of adrenergic output. The aim of the present study was to assess the patterns of hormonal circadian rhythms and the autonomic nervous system balance by means of spectral analysis of heart rate variability (HRV). These parameters were evaluated during 3 sessions (baseline, session I and session 2), before, at the beginning and after a 40-day stay in Antarctica (Station of Terra Nova Bay; average temperature in the study period: - 11 degreesC, 24 h of light, sea level). In each of the sessions, 6 healthy male subjects underwent a 24-h electrocardiogram and blood sampling (08.00, 12.00, 16.00, 20.00, 24.00 and 08.00 h) for hormonal determinations. The data showed a remarkable decrease of hormonal levels without significant changes in circadian rhythms. Spectral analysis of HRV showed an imbalance of the autonomic nervous system with a relative significant decrease of the low frequency band (0.1 Hz) in session I and 2 compared to baseline, which can be functionally interpreted as a relative decrement of the sympathetic component. In conclusion, the exposure to a cold and extreme environment seems to affect autonomic balance over a 40-day period. This is followed by a significant reduction of the anterior pituitary and adrenal hormonal secretory patterns with preserved hormonal circadian rhythms (within the same time period of 40 days). This pattern is suggestive of a trophotropic neurovegetative adaptive process. (C) 2003 Elsevier Science B.V. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sapienza Università di Roma: CINECA IRIS Antarctic The Antarctic Terra Nova Bay International Journal of Psychophysiology 49 1 17 27 |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
antarctica autonomic nervous system circadian rhythm extreme environment hormone hrv spectral analysi neurovegetative trophotropic |
spellingShingle |
antarctica autonomic nervous system circadian rhythm extreme environment hormone hrv spectral analysi neurovegetative trophotropic S. Farrace M. Ferrara C. De Angelis R. Trezza P. Cenni A. Peri CASAGRANDE, Maria DE GENNARO, Luigi Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic |
topic_facet |
antarctica autonomic nervous system circadian rhythm extreme environment hormone hrv spectral analysi neurovegetative trophotropic |
description |
Human adaptation to unknown and extreme environments requires changes in the psychological and physical homeostasis. We previously reported a significant decrease of anterior pituitary and adrenal hormonal levels and a significant modification of psychophysiological correlates of stress, such as galvanic skin response, after exposure to Antarctica, suggesting a possible decrease of individual arousal. The latter was hypothesized to be correlated with a modification of autonomic balance, mainly represented by a possible reduction of adrenergic output. The aim of the present study was to assess the patterns of hormonal circadian rhythms and the autonomic nervous system balance by means of spectral analysis of heart rate variability (HRV). These parameters were evaluated during 3 sessions (baseline, session I and session 2), before, at the beginning and after a 40-day stay in Antarctica (Station of Terra Nova Bay; average temperature in the study period: - 11 degreesC, 24 h of light, sea level). In each of the sessions, 6 healthy male subjects underwent a 24-h electrocardiogram and blood sampling (08.00, 12.00, 16.00, 20.00, 24.00 and 08.00 h) for hormonal determinations. The data showed a remarkable decrease of hormonal levels without significant changes in circadian rhythms. Spectral analysis of HRV showed an imbalance of the autonomic nervous system with a relative significant decrease of the low frequency band (0.1 Hz) in session I and 2 compared to baseline, which can be functionally interpreted as a relative decrement of the sympathetic component. In conclusion, the exposure to a cold and extreme environment seems to affect autonomic balance over a 40-day period. This is followed by a significant reduction of the anterior pituitary and adrenal hormonal secretory patterns with preserved hormonal circadian rhythms (within the same time period of 40 days). This pattern is suggestive of a trophotropic neurovegetative adaptive process. (C) 2003 Elsevier Science B.V. All rights reserved. |
author2 |
S., Farrace M., Ferrara C., De Angeli R., Trezza P., Cenni A., Peri Casagrande, Maria DE GENNARO, Luigi |
format |
Article in Journal/Newspaper |
author |
S. Farrace M. Ferrara C. De Angelis R. Trezza P. Cenni A. Peri CASAGRANDE, Maria DE GENNARO, Luigi |
author_facet |
S. Farrace M. Ferrara C. De Angelis R. Trezza P. Cenni A. Peri CASAGRANDE, Maria DE GENNARO, Luigi |
author_sort |
S. Farrace |
title |
Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic |
title_short |
Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic |
title_full |
Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic |
title_fullStr |
Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic |
title_full_unstemmed |
Reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the Antarctic |
title_sort |
reduced sympathetic outflow and adrenal secretory activity during a 40-day stay in the antarctic |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2003 |
url |
http://hdl.handle.net/11573/101620 https://doi.org/10.1016/s0167-8760(03)00074-6 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000184419400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0038012484&partnerID=65&md5=b6481bb2e7f1407522e7a75587fa0d8b |
geographic |
Antarctic The Antarctic Terra Nova Bay |
geographic_facet |
Antarctic The Antarctic Terra Nova Bay |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/12853127 info:eu-repo/semantics/altIdentifier/wos/WOS:000184419400002 volume:49 issue:1 firstpage:17 lastpage:27 numberofpages:11 journal:INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY http://hdl.handle.net/11573/101620 doi:10.1016/s0167-8760(03)00074-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0038012484 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000184419400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-0038012484&partnerID=65&md5=b6481bb2e7f1407522e7a75587fa0d8b |
op_doi |
https://doi.org/10.1016/s0167-8760(03)00074-6 |
container_title |
International Journal of Psychophysiology |
container_volume |
49 |
container_issue |
1 |
container_start_page |
17 |
op_container_end_page |
27 |
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