TY - RPRT TI - Prospective decrease in progesterone concentrations in female lightweight rowers during the competition season compared with the off season: a controlled study examining weight loss and intensive exercise. AU - F L Morris AU - W R Payne AU - J D Wark PY - 1999 DO - 10.1136/bjsm.33.6.417 UR - https://pubmed.ncbi.nlm.nih.gov/10597853/ ID - 10597853 ER -