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Author Aschoff, J. url  doi
openurl 
  Title Temporal orientation: circadian clocks in animals and humans Type Journal Article
  Year 1989 Publication Animal Behaviour Abbreviated Journal Animal Behaviour  
  Volume 37 Issue Pages 881-896  
  Keywords Human Health; Animals  
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  Series Volume Series Issue Edition  
  ISSN 0003-3472 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 713  
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Author Aschoff, J.; Wever, R. url  doi
openurl 
  Title Ãœber Phasenbeziehungen zwischen biologischer Tagesperiodik und Zeitgeberperiodik Type Journal Article
  Year 1962 Publication Zeitschrift für Vergleichende Physiologie Abbreviated Journal Zeitschrift fr vergleichende Physiologie  
  Volume 46 Issue 2 Pages 115-128  
  Keywords Human Health  
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  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0340-7594 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 715  
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Author Aschoff, J. , openurl 
  Title Der Tagesgang der Körpertemperatur beim Menschen, Type Journal Article
  Year 1955 Publication Klinische Wochenschrift Abbreviated Journal  
  Volume 33 Issue 23/24 Pages 545-551  
  Keywords Human Health  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 707  
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Author Ashkenazi, I. E.; Reinberg, A,; Bicakova-Rocher, A.; Ticher, A. url  openurl
  Title The genetic background of individual variations of circadian-rhythm periods in healthy human adults. Type Journal Article
  Year 1993 Publication American Journal of Human Genetics Abbreviated Journal  
  Volume 52 Issue 6 Pages 1250–1259  
  Keywords Human Health; Adult; Body Temperature; Bronchi; Bronchi: physiology; Circadian Rhythm; Circadian Rhythm: genetics; Female; Genetic Variation; Hand; Hand: physiology; Heart Rate; Humans; Male; Middle Aged; Sex Factors; Sleep  
  Abstract As a group phenomenon, human variables exhibit a rhythm with a period (tau) equal to 24 h. However, healthy human adults may differ from one another with regard to the persistence of the 24-h periods of a set of variables' rhythms within a given individual. Such an internal desynchronization (or individual circadian dyschronism) was documented during isolation experiments without time cues, both in the present study involving 78 male shift workers and in 20 males and 19 females living in a natural setting. Circadian rhythms of sleep-wake cycles, oral temperature, grip strength of both hands, and heart rate were recorded, and power-spectra analyses of individual time series of about 15 days were used to quantify the rhythm period of each variable. The period of the sleep-wake cycle seldom differed from 24 h, while rhythm periods of the other variables exhibited a trimodal distribution (tau = 24 h, tau > 24 h, tau < 24 h). Among the temperature rhythm periods which were either < 24 h or > 24 h, none was detected between 23.2 and 24 h or between 24 and 24.8 h. Furthermore, the deviations from the 24-h period were predominantly grouped in multiples of +/- 0.8 h. Similar results were obtained when the rhythm periods of hand grip strength were analyzed (for each hand separately). In addition, the distribution of grip strength rhythm periods of the left hand exhibited a gender-related difference. These results suggested the presence of genetically controlled variability. Consequently, the distribution pattern of the periods was analyzed to elucidate its compatibility with a genetic control consisting of either a two-allele system, a multiple-allele system, or a polygenic system. The analysis resulted in structuring a model which integrates the function of a constitutive (essential) gene which produces the exact 24-h period (the Dian domain) with a set of (inducible) polygenes, the alleles of which, contribute identical time entities to the period. The time entities which affected the rhythm periods of the variables examined were in the magnitude of +/- 0.8 h. Such an assembly of genes may create periods ranging from 20 to 28 h (the Circadian domain). The model was termed by us “The Dian-Circadian Model.” This model can also be used to explain the beat phenomena in biological rhythms, the presence of 7-d and 30-d periods, and interindividual differences in sensitivity of rhythm characteristics (phase shifts, synchronization, etc.) to external (and environmental) factors.  
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  Notes Approved no  
  Call Number LoNNe @ schroer @ Serial 582  
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Author Atkinson, G.; Davenne, D. url  doi
openurl 
  Title Relationships between sleep, physical activity and human health Type Journal Article
  Year 2007 Publication Physiology & Behavior Abbreviated Journal Physiol Behav  
  Volume 90 Issue 2-3 Pages 229-235  
  Keywords Human Health; Activity Cycles/*physiology; Animals; Body Temperature/physiology; Exercise/*physiology; Health; Humans; Motor Activity/physiology; Pineal Gland/physiology; Sleep/*physiology; Wakefulness/physiology  
  Abstract Although sleep and exercise may seem to be mediated by completely different physiological mechanisms, there is growing evidence for clinically important relationships between these two behaviors. It is known that passive body heating facilitates the nocturnal sleep of healthy elderly people with insomnia. This finding supports the hypothesis that changes in body temperature trigger somnogenic brain areas to initiate sleep. Nevertheless, little is known about how the core and distal thermoregulatory responses to exercise fit into this hypothesis. Such knowledge could also help in reducing sleep problems associated with nocturnal shiftwork. It is difficult to incorporate physical activity into a shiftworker's lifestyle, since it is already disrupted in terms of family commitments and eating habits. A multi-research strategy is needed to identify what the optimal amounts and timing of physical activity are for reducing shiftwork-related sleep problems. The relationships between sleep, exercise and diet are also important, given the recently reported associations between short sleep length and obesity. The cardiovascular safety of exercise timing should also be considered, since recent data suggest that the reactivity of blood pressure to a change in general physical activity is highest during the morning. This time is associated with an increased risk in general of a sudden cardiac event, but more research work is needed to separate the influences of light, posture and exercise per se on the haemodynamic responses to sleep and physical activity following sleep taken at night and during the day as a nap.  
  Address Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Webster Street, Liverpool L3 2ET, UK. G.Atkinson@ljmu.ac.uk  
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  Language English Summary Language Original Title  
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  ISSN 0031-9384 ISBN Medium  
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  Notes PMID:17067643; PMCID:PMC2782301 Approved no  
  Call Number LoNNe @ kagoburian @ Serial 717  
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