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  • Articles: DFG German National Licenses  (5)
  • Shiftwork  (3)
  • Body composition  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Comparison of two analytical procedures for the determination of free urinary catecholamines under the demands of shiftwork experiments (1988)
    Springer
    International archives of occupational and environmental health 61 (1988), S. 89-93 
    Details
    ISSN: 1432-1246
    Keywords: Shiftwork ; Noradrenaline ; Adrenaline ; Automated analysis ; Validation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A typical shiftwork experiment was chosen to prove the validity of an automated procedure for the analysis of free noradrenaline and adrenaline in urine. The method consists of a column switching technique with an adsorption/elution clean-up and a reversed phase high performance liquid chromatography followed by chemical reaction detection based on the trihydroxyindole method. The analysis of variance was performed using a second data set obtained by a semi-automated procedure for which the accuracy had already been confirmed. The analysis of covariance showed that for field studies, as well as for laboratory experiments in which the variances contributed by the experiments themselves are greater than 10% rel., the data sets of the two methods provide the same information.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00381612
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Re-entrainment of body temperature in field studies of shiftwork (1981)
    Springer
    International archives of occupational and environmental health 49 (1981), S. 137-149 
    Details
    ISSN: 1432-1246
    Keywords: Shiftwork ; Field studies ; Re-entrainment ; Body temperature ; Social zeitgebers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Oral temperature readings were taken from six groups of shift-workers (n = 133). The measurements covered a total of 387 days and included readings on a day off and on days of the 1st, 2nd, 4th, 5th and 7th nightshift. The shiftworkers were asked to record oral temperature every 2 h, at work and at leisure, using special thermometers (1°C equals 4 cm). Some of them also interrupted their sleep for additional measurements. On the first day of the night shift the normal circadian rhythm of body temperature was virtually unchanged in most of the groups. However in two groups with a higher physical load during nightwork, an increased temperature was observed during the night (“masking effect”). There were no significant differences between the temperature rhythms in experienced (≥ 15 years of shiftwork) and inexperienced shiftworkers (≤ 1 year of shiftwork) within the first nightshift. During the period of consecutive nightshifts no clear re-entrainment of body temperature was observed. Re-entrainment to nightwork appears to be slower in field studies than in experimental shiftwork studies, which might be explained by the influence of unshifted social “Zeitgebers” in real life.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00377667
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Reduction of nightwork by re-designing of shift-rotas (1983)
    Springer
    International archives of occupational and environmental health 51 (1983), S. 371-379 
    Details
    ISSN: 1432-1246
    Keywords: Shiftwork ; Nightwork ; Design of shift rota
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The reduction of nightwork is an important preventive measure to limit possible negative effects of night shifts on well-being, health and social life. An example of a gradual reduction of nightwork in a group of transport workers at an airport is presented. After having carefully analysed the real number of persons needed during nighttime for loading and unloading aircrafts the number of shiftworkers who had to work between 02.00 and 06.00 h was reduced in a first step from 104 to 66 and in a second step to 38 persons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00378351
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Maximum aerobic power and body composition during the puberty growth period: Similarities and differences between children of two European countries (1981)
    Springer
    European journal of pediatrics 136 (1981), S. 123-133 
    Details
    ISSN: 1432-1076
    Keywords: Exercise ; Fitness ; Body composition ; Growth ; Longitudinal study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This report gives results of a longitudinal study of two cohorts of school children in Norway and West-Germany. The rate of growth in body size and composition is identical for the two samples, but different for the two sexes, and follows closely the trend of growth which has been found for North-Europeans in general. Despite of this similarity in growth of anatomical variables the Norwegian children appeared to be superior in their maximum aerobic power at all comparable ages and in both sexes. The differences between means in maximal oxygen uptake varies somewhat with age and sex and are in the range of 5–10%. It is suggested that the mean differences between Norwegian and German children in their exercise and cardio-vascular fitness are brought about by a more physically active behavioural pattern of living in Norway.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00441914
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Physical performance capacity of children in Norway (1980)
    Springer
    European journal of applied physiology 45 (1980), S. 155-166 
    Details
    ISSN: 1439-6327
    Keywords: Social isolation ; Body composition ; Lung function ; Maximal oxygen uptake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This paper tested the hypothesis that social isolation of children brings about a reduced pattern of habitual physical activity, influences body composition during growth, and hampers development of physical performance capacity. Two cohorts of children were studied, one living at or close to the center, the other living in the periphery of the community of Lom in Southern Norway. The two cohorts of children differed in their patterns of physical behavior, but were otherwise similar in genetic traits, nutrition, and environmental conditions. During a 4-year period the two cohorts of children were tested annually. The center children were leaner, and their maximal oxygen uptake and forced expiratory volume were greater in all years of growth when related to body size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00421323
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    Paper (German National Licenses)
    Fulltext
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