 
         
         
         Abstract
         
         The aim of this study was to verify if, as for men, training status 
            			 induces different catecholamine responses to exercise. To do this, we 
            			 investigated the effect of training status (sprint or endurance) on plasma 
            			 catecholamine response to a supramaximal exercise in women. Nineteen subjects
            
            			 took part in our study: six untrained subjects (UT), seven endurance trained 
            			 subjects (ET) and six sprint trained ones (ST). The trained subjects (ET and 
            			 ST) were all competing at a high national level. The maximal power 
            			 (Wmax) and the mean power (W) were determined from the Wingate-test. 
            			 Blood lactate, adrenaline (A) and noradrenaline (NA) were analysed at rest 
            			 (La0, A0 and NA0), immediately at the end of 
            			 the exercise (Amax and NAmax) and after 5 min 
            			 recovery (Lamax [3 min in arterialized blood], 
            			 A5 and NA5). The disappearance of A and NA was judged by 
            			 the ratio (Amax-A5)/Amax and 
            			 (NAmax-NA5)/NA5. The ratio 
            			 Amax/NAmax was considered as an index of the adrenal 
            			 medulla responsiveness to the sympathetic nervous activity. As expected, during
            
            			 the Wingate-test ST exhibited significantly higher performances compared to UT
            
            			 and ET. But in contrast to the men's data no difference was observed 
            			 between the three groups both for Lamax 
            			 (13.1 ± 0.8 mmol × L-1; 
            			 14.8 ± 1.0 mmol × L-1 
            			 and 
            			 11.2 ± 0.5 mmol × L-1 
            			 respectively for ET, ST and UT), NAmax 
            			 (22.1 ± 1.2 nmol × L-1; 
            			 13.1 ± 2.4 nmol × L-1 
            			 and 
            			 20.2 ± 7 nmol × L-1respectively 
            			 for ET, ST and UT) and Amax 
            			 (4.1 ± 0.8 nmol × L-1; 
            			 2.6 ± 0.6 nmol × L-1; 
            			 13.1 ± 0.6 nmol × L-1 
            			 respectively for ET, ST and UT). Consequently the ratio 
            			 Amax/NAmax was similar in UT, ET and ST (respectively 
            			 0.2 ± 0.03; 0.2 ± 0.04; 
            			 0.17 ± 0.04), These results indicated, in contrast to the 
            			 men's data, that the catecholamine response to the Wingate-test did not 
            			 differ between female subjects of different status of training. In conclusion
            
            			 this study did not find any significant effect of training status on the 
            			 catecholamine response to supramaximal exercise and so argues in favour of sex
            
            			 differences in response to training.
         
         
         
            
Key words
         
         
            Supramaximal exercise - adrenaline - noradrenaline
          
      
    
   
      
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C. Jacob
            Laboratoire de Physiologie et de Biomécanique de 
            			 ‘l'Exercice Musculaire · UFR-APS · Université 
            			 de Rennes II
            
            Av. Charles Tillon · CS 24414 · 35044 Rennes Cedex 
            			 · France ·
            
            Phone: +33 02 99141775
            
            Fax: +33 02 99141774
            
            Email: christophe.jacob@uhb.fr