Fig. 5.

LH pulse frequency measured during daytime hours (1000–1800) both in the early follicular phase of a control, nonstressed menstrual cycle (open bars) and on the same day in a cycle with (gray bars) and without (black bars) pretreatment with antalarmin prior to exposure to MSR + SS (move + diet) in HSR, MSR, and SS monkeys (A) and in HSR vs. animals that became anovulatory in response to MSR + SS (B). *P < 0.05.