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  • 1
    Electronic Resource
    Electronic Resource
    Urine excretion of androgen hormones in professional racing cyclists (1994)
    Springer
    European journal of applied physiology 68 (1994), S. 200-204 
    Details
    ISSN: 1439-6327
    Keywords: Urine androgens ; Sex hormone binding globulin ; Cyclists ; Training ; Competition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This study was performed on 16 professional racing cyclists to examine changes in urine concentrations of androgen hormones (testosterone, epitestosterone, androsterone, etiocholanolone, 11-hydroxy-androsterone and 11-hydroxy-etiocholanolone) and plasma sex hormone binding globulin (SHBG) after training and after competition. The urinary concentrations of androgen hormones decreased during the period of training and increased during competition, this being the reverse of what happened to SHBG plasma concentrations. These changes would suggest that physical activity may have an influence on the elimination of androgen hormones and on the synthesis of its transporting protein SHBG.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00376767
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Changes in sex hormone binding globulin, high density lipoprotein cholesterol and plasma lipids in male cyclists during training and competition (1992)
    Springer
    European journal of applied physiology 64 (1992), S. 9-13 
    Details
    ISSN: 1439-6327
    Keywords: Sex hormone binding globulin ; High density lipoprotein-cholesterol ; Lipids ; Cyclists ; Training ; Competition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This study was performed on 13 professional race-cyclists to examine changes in sex hormone binding globulin (SHBG), high density lipoprotein cholesterol (HDL-C) and serum lipid concentrations after training and after competition. While SHBG, total cholesterol and phospholipids increased and free fatty acids (FFA) decreased significantly during training, HDL-C and FFA increased and SHBG and triglycerides (TG) decreased significantly during the competition period. These latter changes in serum lipids and lipoproteins were assumed to be a direct effect of utilisation of muscle and plasma TG as fuels for exertion occurring only in extreme exercise. Changes in SHBG concentrations indicated that they were dependent on the conditions of the physical effort and could be related not only to the concentrations of androgens but also to the reduction in body mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00376432
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
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