Luteal phase defects following agonist-triggered ovulation: a patient-dependent response.

The luteal phase (LP) of patients receiving triptorelin 0.1 mg to trigger ovulation was studied. Patients not pregnant in the first cycle with 0.

[Comparison of different protocols of ovulation induction, by GnRH agonists and chorionic gonadotropin].

Objective: The aim of this study was to determine the best way of using a gonadotropin-releasing hormone agonist (GnRHa) for triggering ovulation and to analyse the reasons for short luteal phases.

Materials And Methods: Thirteen different regimens of GnRH-a administration were used to trigger ovulation using different dosages and either one, two or three administrations: triptorelin, buserelin spray, buserelin subcutaneously, leuprolide and nafarelin in 231 treatment cycles. Pregnancy rate and luteal phase duration were compared with those of a control group for whom ovulation was triggered with hCG.

Rapid leptin decrease in immediate post-exercise recovery.

Objective: Leptin concentrations in humans are known to decrease in response to fasting. The aim of this work was to investigate whether leptin levels might also be modified by exercise-induced negative energy balance.

Subjects: Eight male runners reported in the morning from 0800 to 1200 h for (i) one resting session (sitting) and (ii) one exercise-and-rest session (2 h run and 2 h rest).