W. Schaenzer

Publications443
h-index53
Citations11,130
Highly Influential Citations299
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Analysis of non-hormonal nutritional supplements for anabolic-androgenic steroids - results of an international study.
Several recent studies have shown evidence of some nutritional supplements containing prohibited anabolic androgenic steroids, so-called prohormones, which were not declared on the label. Therefore,… Expand
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Nutritional supplements cross-contaminated and faked with doping substances.
Since 1999 several groups have analyzed nutritional supplements with mass spectrometric methods (GC/MS, LC/MS/MS) for contaminations and adulterations with doping substances. These investigations… Expand
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Effect of a controlled dietary change on carbon and nitrogen stable isotope ratios of human hair.
The carbon ((13)C/(12)C) and nitrogen ((15)N/(14)N) stable isotope ratios of human hair can be used for the interpretation of dietary habits and nutritional status in contemporary or past… Expand
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Iron status in elite young athletes: gender-dependent influences of diet and exercise
Iron depletion seems to occur more frequently among athletes than in the general population and may affect performance capacity. Only little information is available about the prevalence of iron… Expand
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Assessing energy expenditure in male endurance athletes: validity of the SenseWear Armband.
PURPOSE The correct assessment of energy expenditure (EE) in athletes is important to ensure that dietary energy intake is sufficient. In general, athletes are individuals with especially high levels… Expand
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Factors influencing the steroid profile in doping control analysis.
Steroid profiling is one of the most versatile and informative screening tools for the detection of steroid abuse in sports drug testing. Concentrations and ratios of various endogenously produced… Expand
  • 205
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ESC Study Group of Sports Cardiology Position Paper on adverse cardiovascular effects of doping in athletes
The use of doping substances and methods is extensive not only among elite athletes, but also among amateur and recreational athletes. Many types of drugs are used by athletes to enhance performance,… Expand
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Low energy availability in exercising men is associated with reduced leptin and insulin but not with changes in other metabolic hormones
ABSTRACT Low energy availability, defined as low caloric intake relative to exercise energy expenditure, has been linked to endocrine alterations frequently observed in chronically energy-deficient… Expand
  • 55
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Glucuronidation of anabolic androgenic steroids by recombinant human UDP-glucuronosyltransferases.
A multidimensional study on the glucuronidation of anabolic androgenic steroids and their phase I metabolites by 11 recombinant human UDP-glucuronosyltransferases (UGTs) was carried out using liquid… Expand
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Identification of the aromatase inhibitors anastrozole and exemestane in human urine using liquid chromatography/tandem mass spectrometry.
Anastrozole (2,2'-[5-(1H-1,2,4-triazol-1-ylmethyl)-1.3-phenylene]bis(2-methylpropionitrile)) and exemestane (6-methylenandrostan-1,4-diene-3,17-dione) are therapeutically used to treat… Expand
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