caa a22 4500 469054999 CHVBK 20180323132841.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF00376433 doi (NATIONALLICENCE)springer-10.1007/BF00376433 Seasonal changes in performance and free testosterone: cortisol ratio of elite female rowers [Elektronische Daten] [C. Vervoorn, L. Vermulst, A. Boelens-Quist, H. Koppeschaar, W. Erich, J. Thijssen, W. de Vries] Summary: The aim of this study was to investigate the seasonal behaviour of the plasma free testosterone: cortisol ratio (FTCR) and to relate hormonal changes to daily training volume and performance parameters on a rowing ergometer in elite female rowers. During 9 months of training preceding the 1988 Olympic Games the resting values of the FTCR in six elite female rowers were regularly (ten times) studied. Daily training volume was analysed in terms of rowed distance (l rowad) and time (t). In addition, two performance parameters, the power at 4.0 mmol·l−1 lactate concentration in the blood and the maximal power, were determined by a test on a rowing ergometer. The results indicated that the mean FTCR test value did not differ significantly from the level of the initial test or from the mean value of the directly preceding test. A significant negative correlation (r=−0.98, P<0.01) between FTCR and l rowed was found in a period i.e. at a training camp, when there was a sudden increase in training volume. When FTCR was related to t a significant positive correlation (r=0.88, P<0.05) was found only for the period at the training camp. Our data further suggested that the FTCR alone was not an adequate indicator for the anabolic/catabolic balance in elite female rowers. This finding was contrary to previous findings in elite male rowers. However, in training practice the FTCR seems useful as an indicator of the hormonal training status of elite female rowers when complemented with data about total and free testosterone, performance parameters and knowledge concerning cyclic variations of the FTCR. Springer-Verlag, 1992 Elite female rowers nationallicence Free testosterone:cortisol ratio nationallicence Training volume nationallicence Rowing ergometry nationallicence Overstrain nationallicence Vervoorn C. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut Vermulst L. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut Boelens-Quist A. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut Koppeschaar H. Department of Endocrinology, University Hospital Utrecht, University of Utrecht, Heidelberglaan 100, NL-3584 CX, Utrecht, The Netherlands aut Erich W. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut Thijssen J. Department of Endocrinology, University Hospital Utrecht, University of Utrecht, Heidelberglaan 100, NL-3584 CX, Utrecht, The Netherlands aut de Vries W. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/1(1992-01-01), 14-21 0301-5548 64:1<14 1992 64 421 https://doi.org/10.1007/BF00376433 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00376433 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vervoorn C. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- Vermulst L. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- Boelens-Quist A. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- Koppeschaar H. Department of Endocrinology, University Hospital Utrecht, University of Utrecht, Heidelberglaan 100, NL-3584 CX, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- Erich W. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- Thijssen J. Department of Endocrinology, University Hospital Utrecht, University of Utrecht, Heidelberglaan 100, NL-3584 CX, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- de Vries W. Department of Medical Physiology and Sports Medicine, University of Utrecht, Vondellaan 24, NL-3521 GG, Utrecht, The Netherlands aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/1(1992-01-01), 14-21 0301-5548 64:1<14 1992 64 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer