Results 131 to 140 of about 20,006 (281)

Impact of acute caffeine intake on local tolerance to cold before and after total sleep deprivation

Experimental Physiology, EarlyView.
Abstract Total sleep deprivation (TSD) alters local cold tolerance and could thus increase the risk of cold injury. We evaluated the impact of acute caffeine intake, the main countermeasure to TSD‐related deleterious effects, on local cold tolerance before and after TSD.
Baptiste de Lorgeril, Pierre‐Emmanuel Tardo‐Dino, Cyprien Bourrilhon, Michael Quiquempoix, Catherine Drogou, Lise Mateo, Mégane Erblang, Philippe Colin, Pascal Van Beers, Mounir Chennaoui, Danielle Gomez‐Merino, Fabien Sauvet   +11 more
wiley   +1 more source

Bioavailable testosterone and androgen receptor activation, but not total testosterone, are associated with muscle mass and strength in females

The Journal of Physiology, EarlyView.
Abstract figure legend Twenty‐seven pre‐menopausal, untrained females performed a 12‐week resistance training programme to explore the association between androgen concentrations, androgen receptor signalling and skeletal muscle size and strength. Total testosterone was not associated with muscle mass or strength, nor with resistance training‐induced ...
Sarah E. Alexander, Briana Gatto, Olivia E. Knowles, Ross M. Williams, Kinga N. Fiebig, Paul Jansons, Paul A. Della Gatta, Andrew Garnham, Nir Eynon, Glenn D. Wadley, Brad Aisbett, Danielle Hiam, Séverine Lamon   +12 more
wiley   +1 more source

A Longitudinal Examination between Chronotype and Insomnia in Youths: A Cross-Lagged Panel Analysis

Clocks & Sleep
Adolescence and young adulthood are transitional periods associated with significant changes and challenges, leading to a heightened vulnerability to sleep disturbances and mental health difficulties.
Forrest Tin Wai Cheung, Hao Fong Sit, Xiao Li, Joey Wing Yan Chan, Ngan Yin Chan, Yun Kwok Wing, Shirley Xin Li   +6 more
doaj   +1 more source

Relationship between depressive mood and chronotype in healthy subjects [PDF]

, 2009
María Paz Loayza Hidalgo, Wolnei Caumo, M.S. Posser, Sônia Beatriz Coccaro, Ana Luiza Camozzato, Márcia Lorena Fagundes Chaves   +5 more
openalex   +1 more source

Associations between sleep duration, insomnia, depression, anxiety and registry‐based school grades: A longitudinal study among high‐school students

Journal of Sleep Research, Volume 34, Issue 4, August 2025.
Summary This study explored the prospective associations between sleep patterns, mental health and registry‐based school grades among older adolescents. In the spring of 2019, 1st year high‐school students in Western Norway were invited to a survey assessing habitual sleep duration, insomnia, depression and anxiety.
Linn Nyjordet Evanger, Ståle Pallesen, Ingvild West Saxvig, Mari Hysing, Børge Sivertsen, Stein Atle Lie, Michael Gradisar, Bjørn Bjorvatn   +7 more
wiley   +1 more source

Validation of the French version of the Munich ChronoType questionnaire and associations between chronotype and physiological parameters

Chronobiology International
Assessing chronotype is essential in clinical and research environments, but the Munich ChronoType Questionnaire (MCTQ), a widely utilised tool, is not available in French. Therefore, we carried out an observational monocentric study to validate the French MCTQ against the sleep diary for sleep schedules, the Morningness-Eveningness Questionnaire (MEQ)
Coelho, Julien, Micoulaud-Franchi, Jean-Arthur, D’incau, Emmanuel, Bourgin, Patrice, Gronfier, Claude, Leger, Damien, Galvez, Paul, Philip, Pierre, Taillard, Jacques   +8 more
openaire   +3 more sources

Sleep Quality, but Not Personality Traits, Mediates the Relationship between Chronotype and Life Satisfaction: A Study in Young Adults

Clocks & Sleep
Chronotype reflects the morningness–eveningness preference over a 24 h period. Significant data indicate meaningful differences between evening types (ETs) and morning types (MTs) in behavior, personality traits, health, and well-being.
Anat Lan, Yelena Stukalin, Haim Einat
doaj   +1 more source

CHRONOTYPES AND SUBJECTIVE SLEEP PARAMETERS IN EPILEPSY PATIENTS: A LARGE QUESTIONNAIRE STUDY [PDF]

, 2010
Wytske A. Hofstra, Marijke C. M. Gordijn, Johanna C. van Hemert-van der Poel, Job van der Palen, Al W. de Weerd   +4 more
openalex   +1 more source

The effect of sleep and shift work on the primary immune response to messenger RNA‐based COVID‐19 vaccination

Journal of Sleep Research, Volume 34, Issue 4, August 2025.
Summary Shift work can cause circadian misalignment, which often results in sleeping problems and has been associated with immune dysfunction. To better understand the impact of shift work on a primary immune response to vaccination, we compared severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2)‐specific humoral and cellular immune responses ...
Tamara M. J. Brouwers, Ümmü Gülsüm Çobanoğlu, Daryl Geers, Wim J. R. Rietdijk, Lennert Gommers, Susanne Bogers, Gert Jan Lammers, Gijsbertus T. J. van der Horst, Inês Chaves, Corine H. GeurtsvanKessel, Birgit C. P. Koch, Rory D. de Vries, Debbie van Baarle, Hugo M. van der Kuy, Heidi M. Lammers‐van der Holst   +14 more
wiley   +1 more source

Lower school performance in late chronotypes: underlying factors and mechanisms

Scientific Reports, 2017
Success at school determines future career opportunities. We described a time-of-day specific disparity in school performance between early and late chronotypes.
Giulia Zerbini, Vincent van der Vinne, Lana K. M. Otto, Thomas Kantermann, Wim P. Krijnen, Till Roenneberg, Martha Merrow   +6 more
doaj   +1 more source