Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Chronotype"”.
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Chronotype in the South African population: the influence of longitudinal location
… in a phenomenon known as diurnal preference or chronotype. A person may have a morning-chronotype, where they enjoy rising and being active early in the day, an evening-chronotype where they prefer to be active later in the day into the late night, retiring in the early morning hours, or have no …
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Developmental synchrony: The relation between chronotype and pubertal timing with depression in youth
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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The relationship between depression and chronotype: A longitudinal assessment during childhood and adolescence
Background/Objective During adolescence, chronotype shifts towards “eveningness.” “Eveningness” is related to negative physical and mental health outcomes. Little is known about what influences the shift in chronotype beyond pubertal status. The current study examined the influence of earlier …
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Breast Cancer and Cortisol Secretion in Relation to the Per3 Vntr, Chronotype, and Sleep
… tandem repeat (VNTR) has been associated with chronotype, sleep and mood disturbances, altered hormone or cytokine secretion, and increased premenopausal breast cancer (BrCA) risk. Methods: Two studies were conducted. One study based in India identified histologically confirmed BrCA cases that …
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The role of chronotype in the participation and performance of South African and Dutch marathon runners
… evenings (evening-types), and is referred to as ‘chronotype’. Many different factors may affect a person’s chronotype, including age, sex, physical activity, ethnicity and geographical location. Certain clock-related genotypes have also been shown to be associated with chronotype. For example, …
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The influence of sleep-wake behaviour and chronotype on the match-play and physical performance of tennis players
… the known influence sleep-wake behaviour (SWB), chronotype, and diurnal variation have on skill execution, physical attributes and match-play outcomes in other sports and how few studies have explored their impact on tennis players. Chapter three of this thesis investigated the relationship …
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Circadian rhythm, activity level, training habits and sports performance : the molecular and subjective components
… waking, activity and rest (sleep) are known as chronotype or diurnal preference; which arise due to differences in circadian rhythmicity due to the fact that rhythms are not exactly 24-hours. Various polymorphisms of certain genes involved in circadian rhythm generation have been associated with …
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FROM CLOCKS TO EXERCISE, FROM METABOLISM TO PERFORMANCE: A CHRONOPHYSIOLOGICAL APPROACH
… emphasizing the role of sleep quality, chronotype, and social jetlag in shaping endurance, strength, and balance. The final section of this introduction delves into molecular aspects, investigating the influence of temperature regulation, metabolism, and clock genes in determining …
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Evaluating sleep and circadian rhythm disturbances and symptoms of impulsivity and inattention: Implications for adult attention-deficit/hyperactivity disorder
… in ADHD, and individual differences in human chronotype and diurnal preference have been linked with impulsivity and attention problems in adults. In the work presented here we examined associations between a later circadian phase of entrainment, impaired sleep quality, and circadian …
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The Association between Symptoms of Autoimmune Diseases and Circadian Clock Disruption: A Pilot Study Using Only Healthy Controls
… symptomologies, circadian clock, chronotype and actigraphy were utilized to measure direct correlations. MS cognitive dysfunction was correlated with fatigue and sleep (r = 0.95, 0.93, 0.92). SS dryness was also correlated with fatigue and sleep (r = 0.89, 0.77, 0.82). SS fatigue …
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Motivation as a Common Cognitive Signature of Physical and Mental Health: Bridging Computational Psychiatry, Chronobiology, and Metabolic Health
… processes, I found that individuals with a late chronotype show the same computational signature previously linked to neuropsychiatric symptoms. This effect interacted with the time of day, with late chronotype individuals exhibiting motivational deficits in the morning but not the evening …
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Social jetlag and global sleep quality predict worse grades in first-year STEM students.
… measures of sleep quality, social jetlag, chronotype, daytime sleepiness, mental health, and fluid intelligence. Sleep quality and social jetlag remained predictive of grade point average (GPA) after controlling for all variables (ps<.05). After excluding participants with very low GPAs (< …
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Percepção do estresse acadêmico, padrões de sono e desfechos em saúde mental em estudantes do ensino médio no turno matutino
… Scale, Pittsburgh Sleep Quality Index, Munich Chronotype Questionnaire, Pediatric Daytime Sleepiness Scale and Depression Anxiety and Stress Scale. The data were analysed using a Structural Equation Model after defining a final model composed by 1) Perception of Academic Stress; 2) a latent …
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MODULATION OF TASTE PERCEPTION AS A POSSIBLE STRATEGY IN OBESITY TREATMENT: NEW PERSPECTIVES FOR PRECISION NUTRITION
… factors such as eating disorders and chronotype. In addition, we wanted to investigate the impact of different dietary treatments such as the Mediterranean diet and the very low calorie ketogenic diet (VLCKD) on gustatory perception of subjects with severe obesity with the goal of …
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Predictors Of Interindividual Differences In Vulnerability To Neurobehavioral Consequences Of Chronic Partial Sleep Restriction
… academic intelligence, subjective reports of chronotype, sleepiness and fatigue, performance on working memory, and demographic factors such as sex, ethnicity, and body mass index, on vulnerability to the negative effects of sleep loss on psychomotor vigilance. Superior baseline performance on …
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The role of a circalunar clock in speciation
… individuals with different timing phenotypes (chronotypes). Often, reproductive timing is controlled by biological clocks; endogenous molecular mechanisms that track environmental cycles. Given their prevalence, ecological relevance, and potential to isolate reproduction, biological clocks may …
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Qualidade do sono, sonolência diurna e fatores associados em estudantes universitários: um estudo baseado nos determinantes sociais
… questionnaires: “Health and sleep”; the Munich chronotype questionnaire; the Epworth Sleepiness Scale and the Pittsburgh Sleep Quality Index. To identify the factors associated with poor sleep quality and excessive daytime sleepiness, Poisson regression with robust variance was used, in which …
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PERIOD3 variable number tandem repeat genotype associations with performance, injury, illness and re-entrainment
… Therefore, the aim of Study 1 was to compare the chronotype and PER3 VNTR genotype distribution of South African Super Rugby players to individuals of low physical activity (i.e. those who are physically active ≤2 times per week). The aim of Study 2 was to determine whether PER3 VNTR genotype …
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Madness and narrative understanding: A comparison of two female firsthand narratives of madness in the pre and post enlightenment periods.
This study uses a narrative analytic approach to explore the similarities and differences between pre-Enlightenment and post-Enlightenment firsthand accounts of madness in order to answer the question; what is the relationship between madness, narrative, understanding, identity and recovery? …