Artículo
Prolactin responses to stress induced by a competitive swimming effort
Autor/es | Carrasco Páez, Luis
T. Luque, G. V. Gutiérrez, G. M. Oltras, C. |
Departamento | Universidad de Sevilla. Departamento de Educación Física y Deporte |
Fecha de publicación | 2007 |
Fecha de depósito | 2017-12-07 |
Publicado en |
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Resumen | Purpose:The aim of the present study was to investigate the changes in prolactin (PRL) plasma concentrations induced by competitive swimming practice. Methods:Twenty-three males, 13 trained swimmers (experimental ... Purpose:The aim of the present study was to investigate the changes in prolactin (PRL) plasma concentrations induced by competitive swimming practice. Methods:Twenty-three males, 13 trained swimmers (experimental group) and 10 sedentary and healthy students (age-matched control group) took part in this investigation. The swimmers were assessed at three points: basal conditions, pre-and post-swimming competition (100 m freestyle), whereas subjects from the control group only undertook the basal trial. The variables analysed were: several body composition measures, anxiety level (STAI questionnaire), PRL and lactic acid concentrations. Results:No statistical differences were observed in PRL basal levels between groups. An evident PRL response to pre-competition psychological stress was observed in the experimental group, since the PRL plasma concentration rosefrom 4.02±0.53 ng/ml (basal conditions) to 5.52±0.53 ng/ml (p≤0.05). The PRL response to the competitive effort produced an important increase in its plasma concentration (10.07±1.59 ng/ml), showed statistical differences from pre-competition (p≤0.01) and from basal conditions (p≤0.001). A significant rise in plasma lactate levels just at the end of the effort was found, although it did not correlate with PRL levels in the same situation. Conclusion:While we observed a remarkable response of PRL to psychological and physiological stress induced by a short term competitive effort in swimming, no changes in PRL basal levels were exhibitedwith swim training. More research is needed to clarify these findings. |
Cita | Carrasco Páez, L., T. Luque, G., V. Gutiérrez, G. y M. Oltras, C. (2007). Prolactin responses to stress induced by a competitive swimming effort. Biology of Sport. A quarterly journal of sport and exercise sciences, 24 (4), 311-323. |
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