Open AccessImpact of 24 h of isolation and confinement exposure on psychological state of healthy human volunteers
Author(s) -
Mohapatra Ss,
K. N. Anand,
Avk Raju
Publication year - 2020
Publication title -
indian journal of aerospace medicine/indian journal of aerospace medicine (online)
Language(s) - English
Resource type - Journals
eISSN - 2582-5348
pISSN - 0970-6666
DOI - 10.25259/ijasm_9_2019
Subject(s) - anxiety , crew , mood , isolation (microbiology) , psychology , profile of mood states , affect (linguistics) , loneliness , morning , clinical psychology , social psychology , medicine , aeronautics , engineering , psychiatry , biology , communication , microbiology and biotechnology
During space missions, crew is encountered with various psychological challenges. One major challenge during space mission is the issue of isolation and confinement. Understanding of human behavior and performance in isolated and confined environment (ICE) has been the area of interest for all those involved in human space program. Ground-based mission-specific studies are necessary before undertaking any specific mission so that the psychological impact of ICE can be investigated in details. The first human space flight of India, which may be launched in the near future, may involve for a duration not more than 24 h. This scientific experiment was undertaken with an aim to study the impact of 24 h isolation and confinement on psychological state of healthy human volunteers. Material and Methods: During 24 h period of isolation and confinement, 10 healthy human volunteers were evaluated every 10–12 h with State-Trait Anxiety Inventory, Positive and Negative Affect State (PANAS), and Profile of Mood States (POMS) in the existing Isolation cum Group Confinement laboratory of Institute of Aerospace Medicne (IAM). Similar psychological evaluation was also carried out among nine healthy individuals who served as controls. Results: There was a momentary increase in state anxiety level during early period of isolation and confinement exposure (ICE). However, the anxiety level returned to pre-exposure level after 24 h. Furthermore, there was a significant drop in the level of negative emotions among the subject group as well as among control group in the morning of day 2 though there was no significant change in the positive emotions. Over the period of 24 h of isolation and confinement, neither the subject group nor the control group showed statistically significant changes in the total mood disturbance. None of the groups showed any significant changes in any of the POMS subscales, that is, anger-hostility, confusion-bewilderment, depression-dejection, fatigue-inertia, and tension-anxiety except for vigor-activity. Thus, a stable mood state was observed among the participants. Conclusion: Before exposure to isolation and confinement, the subject group exhibited a higher level of “State” anxiety on day 1 which had returned to pre-exposure level in the morning of day 2. In both days, the state of positive emotions was statistically insignificant among subject as well as among control group. However, a significant decrease in the level of negative emotions among the subject group and control group was observed. There was no significant change in the mood state in the study group as well as in the control group.