exercise-induced amenorrhea

exercise-induced a·men·or·rhe·a

temporary cessation of menstrual function due to strenuous daily exercise, as in jogging, increased endorphins and other neuropeptides inhibiting hypothalamic function.
Menstrual dysfunction in female long-distance runners, which may be accompanied by osteopenia, osteoporosis, hypo-oestrogenic amenorrhoea

exercise-induced amenorrhea

Exercise-associated amenorrhea Menstrual dysfunction in ♀ long-distance runners which may be accompanied by osteopenia, osteoporosis, hypoestrogenic amenorrhea. See Running.

ex·er·cise-in·duced a·men·or·rhe·a

(eksĕr-sīz-in-dūst ă-menōr-rēă) Temporary cessation of menstrual discharge due to overly rigorous exercise regimens.