Elsevier

Travel Medicine and Infectious Disease

Volume 24, July–August 2018, Pages 59-64
Travel Medicine and Infectious Disease

Jetlag related sleep problems and their management: A review

https://doi.org/10.1016/j.tmaid.2018.05.008Get rights and content

Abstract

Objectives

We reviewed Jetlag, particularly in view of its effects on sleep and how it can be managed.

Methods

The Proquest Central database of Kırıkkale University, PubMed and Google scholar were used while searching for the following key words: “Jetlag”, “symptoms”, “sleep”, “melatonin” and “treatment”.

Results

Flight dysrhythmia, otherwise known as jetlag, is caused by flying globally over various time zones. Most passengers who fly over six or more different time zones generally require 4–6 days after travelling to resume their usual sleep patterns and to feel less lethargic during the day. Signs of jet lag can vary between debilitated awareness, insomnia, feeling tired during the day and frequent waking during the night. During the night our pineal glands excrete a hormone called melatonin; dim lights cause the continuation of excretion of these hormones whereas any exposure to bright lights stems the flow of release. Common precautionary measures are specific diets, bright lights and melatonin agonists (Ramelteon, Agomelatine).

Conclusion

Sleep issues derived from jetlag were found to be most common in passengers who flew through various time belts. Melatonin assumes a critical part in adjusting the body's circadian rhythms and has been utilized restoratively to re-establish irritated circadian rhythms.

Introduction

Jet lag normally impacts air passengers who pass numerous time belts. It consequences from the body's internal rhythms being out of sync with the day-night cycle at the designation in which the traveler arrives. Melatonin is a pineal hormone that performs a primary part in adjusting physical rhythms and has commonly been prescribed as a drug to reorient these rhythms with their surroundings [1].

Travelling across several continents through various longitudes results in flight dysrhythmia, known as jet lag. Signs of jet lag can vary between debilitated awareness, insomnia, feeling tired during the day and frequent waking during the night. Such factors as the individual travelling, the count of time belts that have been passed and the route of the journey are significant elements that affect the severity of jet lag symptoms [2].

The signs of flight dysrhythmia are commonly exhaustion throughout the day and disturbances in sleep patterns; however additionally encompass loss of mental performance, weakness and irritability [3]. The reason for jet lag is due to the disharmonizing of the body's circadian structure and the day to night cycle of the destination the passenger has travelled to. Loss of sleep throughout the travel period is an additional factor in jetlag. Once passengers have flown over 6 or more time longitudes, it will take them between 4 and 6 days to resume their ordinary sleeping patterns and to feel less lethargic throughout the day. It is important to note that the number of time zones surpassed and in which direction these zones were contribute to the harshness of jetlag [1].

Travel towards the East induces a phase advance in the body's circadian rhythms, whereas westbound travel creates the reversed effect [4]. Ergo, people who fly westbound adjust their bodily rhythms at the speed of one and half hours per day, whereas eastbound passengers do so at one hour per day. This applies to both daytime and nighttime travels. Another important aspect to take note of is that jet lag and the disturbance of the circadian rhythm could also aggravate pre existing disorders associated with the above [2,5].

Section snippets

Circadian rhythm

Humans function as diurnal beings in which their biological clocks adjust to their physiological activities; functions related to any form of activity would take place during the day, while anything related to rest would transpire at night. Daylight and artificial light are the principle environmental indication utilized by the circadian clock to ascertain this adjustment of day to night time cycles [6].

Strong corporeal and biochemical rhythms are evident in all live organisms [7,8]. These

Anatomy

The principal pacemaker of the mammalian circadian system is found in the suprachiasmatic nuclei (SCN) of the hypothalamus. The SCN comprise of cells that alter their heights of activity dependent on the velocity of the surrounding light [27]. These cells are highly responsive to the environmental degree of lights and are able to consolidate light exposure over distinctly lengthy durations of time. The light signal reaches the SCN mainly through the retinohypothalamic tract (RHT). It is

Melatonin

The melatonin hormone is excreted by the pineal gland when darkness descends. The excretion of melatonin is suspended under bright lights; the start of dim light prompts the recommencement of its excretion. It appears to assume a key part in directing the body's circadian rhythms and has been utilized restoratively to re-entrain irritated circadian rhythms. Exogenic melatonin conduces the production of a phase advance when it is consumed towards the evening [31,32], as its impact is

The symptoms of jetlag

Albeit, vast numbers of signs of jetlag have been related with high-altitude flights, the differing determinants however seem to be the duration of the symptoms. Side effects identified with flight travel generally last under 24 h, though those of jetlag may persevere for a significantly longer period of time. The span of the flight is the primary cause of the severity and period of time that jetlag persists. Passengers who travel over more than 3 or more different time belts are more

Treatment

A number of preventative actions can be taken to diminish the effects of jetlag. Undoubtedly, by sleeping during the flight travelers may curtail the severity of sleep deprivation. The ideal time to do this would be during the hours that correspond to the new destination's nighttime; however, short bouts of rest will also be helpful. Short periods of sleep have the additional advantage of diminishing photic stimulation, also decreasing the depth of sleep one falls into. Using eye masks and

Conclusion

The signs of jetlag consist of feeling tired during the day, impeded awareness and insomnia during the night and disruption of sleeping and waking patterns. Jetlag connected sleep issues were noted to be more common in travelers who passed multiple time belts. The melatonin hormone has a critical part in ascertaining the body's circadian rhythms and has been utilized remedially to re-entrain disturbed circadian rhythms.

Financial disclosure

There is no financial disclosures of the authors.

Author contribution and responsibilities

Cemal Cingi: Planning, literature survey.

Ismet Emrah Emre: Planning, literature survey, language editing.

Nuray Bayar Muluk: Planning, literature survey, writing the manuscript, submission.

Conflicts of interest

Author Cemal Cingi declares that he has no conflict of interest.

Author Ismet Emrah Emre declares that he has no conflict of interest.

Author Nuray Bayar Muluk declares that she has no conflict of interest.

Ethical approval

There is no need to take ethical approval, because this paper is review.

Informed consent

There is no need to take informed consent, because this paper is review.

Acknowledgement

“With exception of data collection, preparation of this paper including design and planning was supported by Continuous Education and Scientific Research Association.” There is no financial support. There is only scientific support.

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