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jet lag fatigue

Sarah Kölling, Gunnar Treff, Kay Winkert, Alexander Ferrauti, Tim Meyer, Mark Pfeiffer, Michael Kellmann
This study examined sleep-wake habits and subjective jet-lag ratings of 55 German junior rowers (n = 30 male, 17.8 ± 0.5 years) before and during the World Rowing Junior Championships 2015 in Rio de Janeiro, Brazil. Athletes answered sleep logs every morning, and Liverpool John Moore's University Jet-Lag Questionnaires each evening and morning. Following an 11-h westward flight with 5-h time shift, advanced bedtimes (-1 h, P < .001, ηp(2) = 0.68), reduced sleep onset latency (P = .002, ηp(2) = 0...
December 9, 2016: Journal of Sports Sciences
Heidi Jurvelin, Jari Jokelainen, Timo Takala
BACKGROUND: Rapid travel over multiple time zones usually results in transient de-synchronization between environmental time and the biological clock of the individual. Common symptoms are increased daytime sleepiness, reduced sleep duration and quality, and performance impairments. Exposure to ocular bright light is known to alleviate jet lag symptoms and facilitate adaptation to a new time zone. Recently, transcranial bright light (TBL) via the ear canals has been shown to have antidepressant, anxiolytic, and psychomotor performance-enhancing effects...
April 2015: Aerospace Medicine and Human Performance
Peter Fowler, Rob Duffield, Kieran Howle, Adam Waterson, Joanna Vaile
The current study examined the effects of 10-h northbound air travel across 1 time zone on sleep quantity, together with subjective jet lag and wellness ratings, in 16 male professional Australian football (soccer) players. Player wellness was measured throughout the week before (home training week) and the week of (away travel week) travel from Australia to Japan for a preseason tour. Sleep quantity and subjective jet lag were measured 2 d before (Pre 1 and 2), the day of, and for 5 d after travel (Post 1-5)...
July 2015: International Journal of Sports Physiology and Performance
Peter M Fowler, Rob Duffield, Ian Morrow, Greg Roach, Joanna Vaile
PURPOSE: Despite the reported detrimental effects of international air travel on physical performance, a paucity of interventions have been scientifically tested and confirmed to benefit travelling athletes. Consequently, the aim of the present study was to examine the effects of sleep hygiene and artificial bright light interventions on physical performance following simulated international travel. METHODS: In a randomized crossover design, 13 physically active males completed 24 h of simulated international travel with (INT) and without (CON) the interventions...
March 2015: European Journal of Applied Physiology
Trent Stellingwerff, David B Pyne, Louise M Burke
Elite athletes who compete in aquatic sports face the constant challenge of arduous training and competition schedules in difficult and changing environmental conditions. The huge range of water temperatures to which swimmers and other aquatic athletes are often exposed (16-31 °C for open-water swimming), coupled with altered aquatic thermoregulatory responses as compared with terrestrial athletes, can challenge the health, safety, and performance of these athletes. Other environmental concerns include air and water pollution, altitude, and jetlag and travel fatigue...
August 2014: International Journal of Sport Nutrition and Exercise Metabolism
A V Liamin, N G Neznanov, I A Martynikhin, A V Martynikhin
No abstract text is available yet for this article.
2013: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
Shahid A A Khan, Richard T M Chang, Kamran Ahmed, Thomas Knoll, Roland van Velthoven, Ben Challacombe, Prokar Dasgupta, Abhay Rane
OBJECTIVE: To evaluate the experience and views regarding live surgical broadcasts (LSB) among European urologists attending the European Association of Urology Robotic Urology Society (ERUS) congress in September 2012. MATERIALS AND METHODS: An anonymous survey was distributed via email inviting the participants of the ERUS congress with experience of LSB to share their opinions about LSB. The outcomes measured included; personal experience of LSB, levels of anxiety faced and the perceived surgical quality...
July 2014: BJU International
Yvan Touitou
Sleep is a key element, both physiologically and psychologically, in adolescent development. The prevalence of sleep disorders in western countries is important, as with age the sleep-wake cycle of adolescents becomes irregular and delayed in relation with later sleep onset and waking time resulting in rhythm desynchronization. A large number of adolescents sleep for 7-8h instead of 9-10h per night, which can lead to a cumulative sleep debt with fatigue, behavioral problems and poor academic achievement. The effect of electronic media use (such as television, mobile phone, computer, and electronic gaming) on sleep has been the object of several international studies, though pubertal changes may also impact adolescent sleep...
September 2013: Journal of Physiology, Paris
Aaron Lee, Juan Carlos Galvez
CONTEXT: Prolonged transmeridian air travel can impart a physical and emotional burden on athletes in jet lag and travel fatigue. Jet lag may negatively affect the performance of athletes. STUDY TYPE: Descriptive review. EVIDENCE ACQUISITION: A Medline search for articles relating to jet lag was performed (1990-present), as was a search relating to jet lag and athletes (1983-January, 2012). The results were reviewed for relevance. Eighty-nine sources were included in this descriptive review...
May 2012: Sports Health
James F Cheeseman, Eva C Winnebeck, Craig D Millar, Lisa S Kirkland, James Sleigh, Mark Goodwin, Matt D M Pawley, Guy Bloch, Konstantin Lehmann, Randolf Menzel, Guy R Warman
Following general anesthesia, people are often confused about the time of day and experience sleep disruption and fatigue. It has been hypothesized that these symptoms may be caused by general anesthesia affecting the circadian clock. The circadian clock is fundamental to our well-being because it regulates almost all aspects of our daily biochemistry, physiology, and behavior. Here, we investigated the effects of the most common general anesthetic, isoflurane, on time perception and the circadian clock using the honeybee (Apis mellifera) as a model...
May 1, 2012: Proceedings of the National Academy of Sciences of the United States of America
Charles H Samuels
The impact of transcontinental travel and high-volume travel on athletes can result in physiologic disturbances and a complicated set of physical symptoms. Jet lag and travel fatigue have been identified by athletes, athletic trainers, coaches, and physicians as important but challenging problems that could benefit from practical solutions. Currently, there is a culture of disregard and lack of knowledge regarding the negative effects of jet lag and travel fatigue on the athlete's well-being and performance...
May 2012: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
D J Tortonese, D F Preedy, S A Hesketh, H N Webb, E S Wilkinson, W R Allen, C J Fuller, J Townsend, R V Short
Abrupt alterations in the 24-h light : dark cycle, such as those resulting from transmeridian air travel, disrupt circadian biological rhythms in humans with detrimental consequences on cognitive and physical performance. In the present study, a jetlag-simulated phase shift in photoperiod temporally impaired circadian peaks of peripheral clock gene expression in racehorses but acutely enhanced athletic performance without causing stress. Indices of aerobic and anaerobic capacities were significantly increased by a phase-advance, enabling prolonged physical activity before fatigue occurred...
December 2011: Journal of Neuroendocrinology
David M C Powell, Mick B Spencer, Keith J Petrie
INTRODUCTION: We investigated the effect of an additional day's layover on reducing fatigue in two different duties: a two-pilot crew flying between Auckland and Brisbane, and a three-pilot crew flying between Auckland and Los Angeles. METHODS: Pilots completed a reaction time task, the Samn-Perelli fatigue scale, and the Karolinska Sleepiness Scale on both outward and return flights. The flights were conducted with and without a 1-d layover (Brisbane) and with a 1- or 2-d layover (Los Angeles)...
November 2010: Aviation, Space, and Environmental Medicine
Venkatramanujam Srinivasan, Jarnail Singh, Seithikurippu R Pandi-Perumal, Gregory M Brown, David Warren Spence, Daniel P Cardinali
Traveling through several time zones results in a constellation of symptoms known as jet lag. These include reduced alertness, daytime fatigue, loss of appetite, reduced cognitive skills, and disruption of the sleep/wake cycle. In susceptible air travel passengers, jet lag may exacerbate affective illness and result in psychiatric morbidity. Dysregulation of circadian rhythms and melatonin secretion represent the common underlying factor in jet lag and other circadian disorders. Recent studies have established the effectiveness of strategically timed administration of melatonin and appropriate timed exposure to environmental schedules including light in counteracting the dysregulation (chronobiologic actions)...
November 2010: Advances in Therapy
Tuuli Lahti, Esa Nysten, Jari Haukka, Pekka Sulander, Timo Partonen
Circadian rhythm disruptions may have harmful impacts on health. Circadian rhythm disruptions caused by jet lag compromise the quality and amount of sleep and may lead to a variety of symptoms such as fatigue, headache, and loss of attention and alertness. Even a minor change in time schedule may cause considerable stress for the body. Transitions into and out of daylight saving time alter the social and environmental timing twice a year. According to earlier studies, this change in time-schedule leads to sleep disruption and fragmentation of the circadian rhythm...
2010: Journal of Environmental and Public Health
E J Sánchez-Barceló, M D Mediavilla, D X Tan, R J Reiter
During the last 20 years, numerous clinical trials have examined the therapeutic usefulness of melatonin in different fields of medicine. The objective of this article is to review, in depth, the science regarding clinical trials performed to date. The efficacy of melatonin has been assessed as a treatment of ocular diseases, blood diseases, gastrointestinal tract diseases, cardiovascular diseases, diabetes, rheumatoid arthritis, fibromyalgia, chronic fatigue syndrome, infectious diseases, neurological diseases, sleep disturbances, aging and depression...
2010: Current Medicinal Chemistry
Hans P A Van Dongen
No abstract text is available yet for this article.
February 2010: Sleep
Olivier Coste, Pascal Van Beers, Yvan Touitou
Fatigue and sleep disorders often occur after long-haul flights, even when no time zones are crossed. In this controlled study, we assessed the effects of two levels of hypoxia (at 8000 ft and 12 000 ft) on recovery sleep. Core body temperature (CBT), a circadian marker, urinary 6-sulphatoxymelatonin and free cortisol were studied in 20 young healthy male volunteers exposed for 8 h (08:00-16:00 hours) in a hypobaric chamber to a simulated cabin altitude of 8000 ft and, 4 weeks later, 12 000 ft. Each subject served as his own control...
December 2009: Journal of Sleep Research
G Belcaro, M R Cesarone, R J Steigerwalt, A Di Renzo, M G Grossi, A Ricci, S Stuard, A Ledda, M Dugall, U Cornelli, M Cacchio
This study was conducted with the aim of showing the effects of Pycnogenol on controlling jet-lag symptoms. Oral Pycnogenol, 50 mg tablets 3 times/die, for 7 days starting 2 days prior to the flight was used. The study was divided into two separate parts. In study 1 the most common complaints of patients with jet-lag were evaluated with a rating scale consisting in of a scoring system. In study 2 a brain CT scan was performed after the flight in order to assess minimal brain edema (MBE) in association with typical signs and symptoms, observed in previous published flight studies...
October 2008: Minerva Cardioangiologica
Robert L Sack
Jet Lag Disorder (JLD) is a recognized circadian rhythm sleep disorder characterized by insomnia or excessive daytime sleepiness (and sometimes general malaise and somatic symptoms) associated with transmeridian jet travel. It is a consequence of circadian misalignment that occurs after crossing time zones too rapidly for the circadian system to keep pace. The thesis of this review is that a rational treatment approach for jet lag can be grounded in an understanding of the biology of the human circadian timekeeping system...
March 2009: Travel Medicine and Infectious Disease
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