Petra Dolenc, Tjaša Dimec, Matej Tušak, and Rado Pišot, Institute of Kinesiology Research, Science and Research Centre of Koper, University of Primorska, Koper, Slovenia, Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
The aim of the study was to examine the effects of head-down bed rest on psychological well-being in
young healthy subjects.
Head-down tilting bed rest (BR) is a well-accepted method by which to simulate an acute stage of
human adaptation to the microgravity in space flights and also an important model to study consequences
of physical inactivity and sedentarism on human body. The subject participating in the study were ten
healthy males aged between 20 and 30 who were exposed to a 35-day strict rest in hospital environment.
The participants were asked to complete psychometrical inventories – General Health Questionnaire,
Satisfaction with Life Scale, State Anxiety Inventory, Center for Epidemiological Studies Depression
Scale and Emotional States Questionnaire – on before and after the BR experiment.
There were no significant differences in examined psychological variables between pre and post
BR period. Research results do not show any adverse effects of a prolonged physical inactivity on
perception of health and psychological well-being of selected group of subjects.
The importance of this research was to provide evidence that the provision of favourable
habitability countermeasures can prevent deterioration in the psychological state under conditions of
physical immobilisation. Our findings applied value in the field of health prevention and rehabilitaion.
Research of psychological and cognitive aspects within bed rest studies deserves special attention
and consideration in the future. Psychic balance and emotional strength have undoubtedly an important
role in reducing the consequences of physical impairment and physiological changes due to prolonged
Keywords: physical inactivity, bed rest, psychological well-being, young healthy individuals
1. DeRoshia, C. W., & Greenleaf, J. E. (1993). Performance and Mood State Parameters during 30-Day
6-Degree Head-Down Bed Rest with Exercise Training. Aviat Space Environ Med, 64, 522-527.
2. Diener, E., Emmons, R. A., Larsen, R. J., & Griffin, S. (1985). The Satisfaction with Life Scale.
Journal of Personality Assessment, 49, 71-75.
3. Fox, K. R. (2000). Physical activity and mental health promotion: the natural partnership.
International Journal of Mental Health Promotion, 2, 4-12.
4. Goldberg, D. P., & Hiller V. F. (1979). A scaled version of the General Health Questionnaire.
Psychological Medicine, 9 (1), 139-145.
Dolenc P. et al. EQOL (2009) 69-74
5. Hyeteok, K., Iwasaki, K., Miyake, T., Shiozawa, T., Nozaki, S., & Yajima, K. (2003). Changes in
Bone Turnover Markers during 14-Day 6° Head-Down Bed Rest. J Bone Miner Metabol, 21, 311-
6. Ishizaki, Y., Fukuoka, H., Katsura, T., Nishimura, Y., Kiriyama, M., Higurashi, M. et al. (1994).
Psychological Effects of Bed Rest in Young Healthy Subjects. Acta Physiol Scand, Suppl, 616, 83-
7. Ishizaki, Y., Ishizaki, T., Fukuoka, H., Kim, C. S., Fujita, M., Maegawa, Y. et al. (2002). Changes in
Mood Status and Neurotic Levels during a 20-Day Bed Rest. Acta Astronaut, 50, 453-459.
8. Iwase, S., Takada, H., Watanabe, Y., Ishida, K., Akima, H., Katayama, K. et al. (2004). Effect of
Centrifuge-Induced Artificial Gravity and Ergo-Metric Exercise on Cardiovascular Deconditioning,
Myatrophy & Osteoporosis Induced by a 6-Degree Head-Down Bedrest. J Grav Physiol, 11, 243-244.
9. Komada, Y., Inoue, Y., Mizuno, K., Tanaka, H., Mishima, K., Sato, H. et al. (2006). Effects of Acute
Simulated Microgravity on Nocturnal Sleep, Daytime Vigilance, and Psychomotor Performance:
Comparison of Horizontal and 6-Degree Head-Down Bed Rest. Percept Mot Skills, 103, 307-317.
10. Kume, M. (1997). Mental and Psychological Problems. Bone, 11, 113-119.
11. Lamovec, T. (1988). Priročnik za psihologijo motivacije in emocij. Univerza v Ljubljani, Filozofska
Fakulteta, Oddelek za Psihologijo, 241-256.
12. Radloff, L. S. (1977). The CES-D scale: A self-report depression scale for research in the general
population. Applied Psychological Measurement, 1, 385-401.
13. Shehab, R. L., Schlegel, R. E., Schiflett, S. G., & Eddy, D. R. (1998). The NASA Performance
Assessment Workstation: Cognitive Performance during Head-Down Bed Rest. Acta Astronaut, 43,
14. Styf, J. R., Hutchinson, K., Carlsson, S. G., & Hargens, A. R. (2001). Depression, Mood State, and
Back Pain during Microgravity Simulated by Bed Rest. Psychosomat Med, 63, 862-864.
15. Spileberger C. D. (1983). Manual for the State-Trait Anxiety Inventory (STAI), Consulting
Psychologists Press, CA: PaloAlto.