Variabilité de la fréquence cardiaque en fonction de l'intensité de la pratique physique chez la femme ménopausée

Aim. – Study was to asses the heart rate variability related to the physical practice intensity in post menopausal women.Method. – Time domain measurement of heart rate variability has been realised from the electrocardiogram at rest and during exercice in 3 groups of 6 women : untrained, active and trained. At rest, no significant difference betwen groups appears. But, in the standing position, RR interval and the dispersion around RR interval decrease in trained group only. During submaximal exercise, this dispersion is more elevated in active and trained groups.Conclusion. – Physical practice induces a higher response of sinus node to vagal modulation during standing position and submaximal exercise.     

Suivi médical de la préparation dans le défi français pour la coupe America (1999–2000)

Objective – To gather a maximum of data concerning of the high level athletes in a water sport rather badly known in the field of the energy expenditure.Method – The French challenge for the America cup of year 2000, designed a boat, and joined together a crew of 21 flying personnel selected for their quality, their experiment and their robustness, on the highest level of navigation and the competition to the veil. A whole series of tests medico sporting will measure the physical and sporting components.Results and conclusion – Great disparities appear according to the activity on the boat, as much on the parameters of biometrics, the physiological tests, that on the echocardiographic data. It of in the same way with regard to the proportionings of lactic acid applied to the sporting center médico as at sea.     

Réponses du cortisol et de la testostérone salivaires au cours de la récupération post-compétitive en rugby

Aim. – In order to evaluate the biological repercussions of the post-competitive tiredness state, we measured the progress of the salivary cortisol and testosterone levels in the players of a rugby-team during the week following an international match.Results. – The results reveal a fall of the cortisol levels during the first 4 days following the competition, compared to the values measured at the same hour of a resting day. Conversely, the testosterone levels present an increase during the same period. Consequently, 5 days of recovery are needed for these two biological variables chosen as tiredness markers to return to their basic values.