Influence de la phase du cycle menstruel sur les réponses en catécholamines à l’exercice de sprint chez la femme

2006 ◽  
Vol 31 (5) ◽  
pp. 604-611 ◽  
Author(s):  
Maïtel Botcazou ◽  
Arlette Gratas-Delamarche ◽  
Stéphanie Allain ◽  
Christophe Jacob ◽  
Danièle Bentué-Ferrer ◽  
...  

The aim of the present study was to verify the menstrual cycle phase influence on catecholamine concentrations (adrenaline (A) and noradrenaline (NA)), peak power (Ppic), and peak lactatemia (Lapic) in response to a 6 s sprint exercise on a cycle ergometer in eight untrained women (19.1 ± 0.9 years, 167.7 ± 5.4 cm, 59.5 ± 4.7 kg). All women realize the 6 s sprint test in the morning, within the same menstrual cycle, in the follicular (PF) and the luteal phase (PL). Plasma catecholamine concentrations were determined at rest (A0 and NA0), immediately at the end of the sprint exercise (AEX and NAEX), and after 5 min of recovery (A5 and NA5). Ppic and Lapic were not significantly affected by the menstrual cycle phase. Catecholamine concentrations measured at rest, in response to the 6 s sprint test and after 5 min of recovery were not significantly different in PF and PL. Significant relationships were observed between AEX and Lapic (r = 0.53, p < 0.01) and between AEX and Ppic (r = 0.70, p < 0.01). In conclusion, this study demonstrated that the menstrual cycle phase did not alter performance, lactatemia, and sympatho-adrenergic responses to a short sprint exercise in untrained women.

2007 ◽  
Vol 19 (2) ◽  
pp. 132-144 ◽  
Author(s):  
Maïtel Botcazou ◽  
Christophe Jacob ◽  
Arlette Gratas-Delamarche ◽  
Sophie Vincent ◽  
Danièle Bentué-Ferrer ◽  
...  

The purpose of this study was to clarify the effect of sex on plasma catecholamine responses to sprint exercise in adolescents and adults. Thirty-six untrained participants took part in this study—9 girls and 10 boys (Tanner Stage 4) and 9 women and 8 men. Each participant performed a 6-s sprint test on a cycle ergometer. Plasma adrenaline (A) and noradrenaline (NA) concentrations were determined successively at rest (A0 and NA0), immediately after the 6-s sprint test (AEX and NAEX), and after 5 min of recovery (A5 and NA5). Peak power, expressed in absolute values or relative to body weight and fat-free mass, was significantly higher in boys than in girls and higher in men than in women (p < .001). No sex effect was observed in AEX in the adolescents, but the NA increase was significantly higher in boys in response to the 6-s sprint (p < .05). In adults, no sex difference was found in NAEX, but AEX was significantly higher in men than in women (p < .05). NAEX was significantly higher in women than in girls (p < .05), and AEX was significantly higher in men than in boys (p < .01). The results of this study suggest that male and female adolescents and young adults might exhibit different catecholamine responses to sprint exercise.


1985 ◽  
Vol 249 (2) ◽  
pp. R186-R191 ◽  
Author(s):  
L. A. Stephenson ◽  
M. A. Kolka

The changes occurring in the esophageal temperature (Tes) thresholds for initiation of heat loss responses as affected by the circadian period and menstrual cycle were studied. Four women exercised at 60% peak Vo2 in 35 degrees C (ambient water vapor pressure 1.73 kPa) for 30 min at 0400 and 1600 during the follicular (F) and luteal (L) phase. Tes, arm sweating rate (msw), and forearm blood flow (FBF) were measured frequently. At rest, Tes averaged 0.3 degrees C higher during L than F at both 0400 and 1600 and approximately 0.4 degrees C higher at 1600 than at 0400 during both phases. During exercise transients, the slopes of the FBF:Tes and the msw:Tes relationships were not different among treatments. The thresholds for initiation of sweating and cutaneous vasodilation were higher at 1600 than 0400 during both phases. Thresholds during F at 0400 averaged 36.44 degrees C for msw and 36.80 degrees C for vasodilation. The thresholds during L at 1600 averaged 37.46 and 37.53 degrees C for sweating and vasodilation, respectively. Our data indicate that the thermoregulatory effector activity during exercise is a function of numerous inputs, and one of these may be hormonal or hormonal-like in action. Controlling time of day and menstrual cycle phase are as important as controlling for aerobic power, age, and fitness in studying female thermoregulatory responses during exercise.


2009 ◽  
Vol 106 (1) ◽  
pp. 105-112 ◽  
Author(s):  
Marie K. Hoeger Bement ◽  
Rebecca L. Rasiarmos ◽  
John M. DiCapo ◽  
Audrey Lewis ◽  
Manda L. Keller ◽  
...  

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