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Related Experiment Videos

Melatonin and jet lag: confirmatory result using a simplified protocol.

B Claustrat1, J Brun, M David

  • 1Service de Radiopharmacie et Radioanalyse, Hôpital Neuro-Cardiologique, Lyon, France.

Biological Psychiatry
|October 15, 1992
PubMed
Summary

This study shows melatonin effectively alleviates jet-lag symptoms for eastward travel. Participants taking melatonin reported less fatigue and sleepiness compared to placebo.

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Area of Science:

  • Chronobiology
  • Pharmacology
  • Travel Medicine

Background:

  • Jet-lag, a circadian rhythm disorder, disrupts sleep and causes daytime fatigue.
  • Eastward travel poses significant challenges due to the need to advance the internal body clock.
  • Melatonin is a hormone that regulates sleep-wake cycles and has been investigated for jet-lag treatment.

Purpose of the Study:

  • To replicate the effectiveness of melatonin in a simplified protocol for alleviating jet-lag after eastward flight.
  • To assess the impact of melatonin on subjective measures of jet-lag symptoms.

Main Methods:

  • A double-blind, placebo-controlled study was conducted with 30 participants.
  • Participants received either 8 mg of melatonin or a placebo on the day of return flight and for three subsequent days.

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  • Jet-lag symptoms were assessed using self-ratings on day 8.

    • Main Results:

    • Melatonin significantly improved global treatment efficacy compared to placebo.
    • Participants receiving melatonin reported reduced morning fatigue.
    • Melatonin administration led to decreased evening sleepiness.

    Conclusions:

    • A simplified melatonin protocol is effective in alleviating jet-lag symptoms after eastward travel.
    • Melatonin can be a valuable tool for improving subjective well-being and reducing sleep disturbances in travelers.
    • Further research could explore optimal dosing and timing for different travel scenarios.