- Comparison of self-reported energy availability and metabolic hormones to assess adequacy of dietary energy intake in young elite athletesKarsten Koehler
Institute of Biochemistry, German Sport University, Am Sportpark Muengersdorf 6, D 50933 Cologne, Germany
Appl Physiol Nutr Metab 38:725-33. 2013..Further studies are needed to investigate whether self-reported EA and metabolic hormones are in better agreement when measured repeatedly. ..
- Serum testosterone and urinary excretion of steroid hormone metabolites after administration of a high-dose zinc supplementK Koehler
Institute of Biochemistry, German Research Centre of Elite Sport, German Sport University Cologne, Cologne, Germany
Eur J Clin Nutr 63:65-70. 2009....
- Urinary excretion of exogenous glycerol administration at restKarsten Koehler
Institute of Biochemistry, German Sport University, Cologne, Germany
Drug Test Anal 3:877-82. 2011..Even though there were significant reductions in haemoglobin and haematocrit after 2.5 h, the plasma expansion by glycerol appeared rather marginal in comparison to placebo...