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Document ID (ISN)101771
CIS number 03-972
ISSN - Serial title 0095-6562 - Aviation, Space, and Environmental Medicine
Year 2002
Convention or series no.
Author(s) Kraft N.O., Inoue N., Mizuno K., Ohshima H., Murai T., Sekiguchi C.
Title Physiological changes, sleep and morning mood in an isolated environment
Bibliographic information Nov. 2002, Vol.73, No.11, p.1089-1093. Illus. 18 ref.
Abstract The objective of this project was to examine physiological variables in relationship to sleep motor activity, subjective sleep quality, mood and complaints during confinement. Six male and two female subjects spent seven days in an isolation chamber simulating the interior of the Japanese Experimental Module. Each 24h period included 6h of sleep, three meals and 20min of exercise. Each morning, subjects completed questionnaires on the quality of their sleep. Catecholamine and creatinine excretion, urine volume and body weight were measured two days before and after confinement and sleep motor activity was recorded during confinement. Confinement produced no significant change in body weight, urine volume or questionnaire results. In contrast, epinephrine, norepinephrine and sleep motor activity showed significant differences during confinement. Higher nocturnal norepinephrine excretion correlated with higher sleep motor activity.
Descriptors (primary) catecholamines; confined spaces; space travel; psychological effects; sleep
Descriptors (secondary) subjective assessment; Japan; creatinine; epinephrine; sleep pattern; creatinine excretion; sleep disturbances; epinephrine excretion; norepinephrine excretion; questionnaire survey; determination in urine; physical training
Document type D - Periodical articles
Country / State or ProvinceJapan; USA
Subject(s) Occupational physiology
Broad subject area(s) Stress, psychosocial factors
New technologies
Browse category(ies) Mental health
Space travel
Confined spaces
Fatigue