Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Lahti, Tuuli; Terttunen, Jukka; Leppämäki, Sami; Lönnqvist, Jouko; Partonen, Timo (2007)
Publisher: Co-Action Publishing
Journal: International Journal of Circumpolar Health
Languages: English
Types: Article
Subjects: cabin crew; circadian clock; desynchronization; flight crew; jet lag; phototherapy; shift work

Classified by OpenAIRE into

mesheuropmc: sense organs
OBJECTIVES: Commercial airlines' flight crew members on transmeridian long-haul flights are constantly exposed to rapid changes in external time. Following rapid changes in circadian rhythm may lead to several symptoms known as jet lag. Our aim was to alleviate jet-lag symptoms by timed exposure to bright light (natural sunlight if present, otherwise artificial bright light). STUDY DESIGN: Observational field trial with bright light against jet lag. METHODS: Information on the effects of bright lights on health was delivered through corporate level wellness programs. Volunteer study subjects were cabin crew members on long-haul flights. Subjects filled in a 16-Item Columbia Jet Lag Scale (maximum score 64) before the flight (expected symptoms based on previous flights), on the third day at the destination and again on the third day after returning home. Changes in scores were compared relative to the timed exposure to bright light, and to flights eastwards or westwards, and in summer or winter. RESULTS: Out of 75 subjects, 15 returned the questionnaires for a total of 28 flights. The mean estimated effect of bright light was a decrease of 5.3 points on the symptom scale. The difference was not significant (SE = 3.4, df = 11, t = -1.6, p = 0.15). The flight had no influence on the estimate. CONCLUSIONS: The results do not give support to the hypothesis that timed exposure to bright light would alleviate jet lag symptoms, although the small sample size was a problem. More field studies are needed to establish the feasibility of bright light for reducing jet lag.Keywords: cabin crew; circadian clock; desynchronization; flight crew; jet lag; phototherapy; shift work(Int J Circumpolar Health 2007; 66(4):365-369)
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 1. Winget c M, DeRoshia c W, Markley c L, h olley Dc . A review of human physiological and performance changes associated with desynchronosis of biological rhythms. Aviat Space Environ Med 1984;55:1085- 1096.
    • 2. Boulos Z, c ampbell SS, Lewy Aj, Terman M, Dijk Dj, Eastman ci . Light treatment for sleep disorders: consensus report. Vii. jet lag. j Biol Rhythms 1995;10:167- 176.
    • 3. c ho K, Ennaceur A, c ole jc , Suh c K. c hronic jet lag produces cognitive deficits. j Neurosci 2000;20: Rc 66(1-5).
    • 4. Waterhouse j, Edwards B, Nevill A, Atkinson G, Reilly T, Davies P, Godfrey R. Do subjective symptoms predict our perception of jet-lag? Ergonomics 2000; 43:1514-1527.
    • 5. h aimov i, Arendt j. The prevention and treatment of jet lag. Sleep Med Rev 1999;3:229-240.
    • 6. Aschoff j, h offmann K, Pohl h , Wever R. Re-entrainment of circadian rhythms after phase-shifts of the Zeitgeber. c hronobiologia 1975;2:23-78.
    • 7. c zeisler c A, Duffy jF, Shanahan TL, Brown EN, Mitchell jF, Rimmer DW, Ronda jM, Silva Ej, Allan jS, Emens jS, Dijk Dj, Kronauer RE. Stability, precision, and near-24-hour period of the human circadian pacemaker. Science 1999;284:2177-2181.
    • 8. Davidson Aj, Sellix MT, Daniel j, y amazaki S, Menaker M, Block GD. c hronic jet-lag increases mortality in aged mice. c urr Biol 2006;16:R914-916.
    • 9. Postolache TT, Oren DA. c ircadian phase shifting, alerting, and antidepressant effects of bright light treatment. c lin Sports Med 2005;24:381-413.
    • 10. Parry BL. jet lag: minimizing its effects with critically timed bright light and melatonin administration. j Mol Microbiol Biotechnol 2002;4:463-466.
    • 11. Kelly TL, Kripke DF, h ayduk R, Ryman D, Pasche B, Barbault A. Bright light and LEET effects on circadian rhythms, sleep and cognitive performance. Stress Med 1997;13:251-258.
    • 12. Samel A, Wegmann h M. Bright light: a countermeasure for jet lag? c hronobiol int 1997;14:173-183.
    • 13. Rosenthal NE, Genhart Mj, Sack DA, Skwerer RG, Wehr TA. Seasonal affective disorder and its relevance for the understanding and treatment of bulimia. in: h udson ji , Pope h G, editors. The Psychobiology of Bulimia. Washington, Dc : American Psychiatric Press; 1987. p. 205-228.
    • 14. h ays RD, Sherbourne c D, Mazel RM. The RAND 36-item h ealth Survey 1.0. h ealth Econ 1993;2:217- 227.
    • 15. Spitzer RL, Terman M, Williams jB, Terman jS, Malt UF, Singer F, Lewy Aj. jet lag: clinical features, validation of a new syndrome-specific scale, and lack of re - sponse to melatonin in a randomized, double-blind trial. Am j Psychiatry 1999;156:1392-1396.
    • 16. Lindstrom Mj, Bates DM. Newton-Raphson and EM algorithms for linear mixed-effects models for repeated-measures data. j Am Stat Assoc 1988;83: 1014-1022.
    • 17. Atkinson G, Edwards B, Reilly T, Waterhouse j. Exercise as a synchroniser of human circadian rhythms: an update and discussion of the methodological problems. Eur j Appl Physiol 2007;99:331-341.
    • 18. Leppämäki S, Partonen T, Lönnqvist j. Bright-light exposure combined with physical exercise elevates mood. j Affect Disord 2002;72:139-144.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article

Collected from