TY - JOUR AU - Ennour-Idrissi, Kaoutar AU - Maunsell, Elizabeth AU - Diorio, Caroline PY - 2015 DA - 2015/11/05 TI - Effect of physical activity on sex hormones in women: a systematic review and meta-analysis of randomized controlled trials JO - Breast Cancer Research SP - 139 VL - 17 IS - 1 AB - Exposure to high levels of endogenous estrogens is a main risk factor for breast cancer in women, and in observational studies was found to be inversely associated with physical activity. The objective of the present study is to determine the effect of physical activity interventions on sex hormone levels in healthy women. SN - 1465-542X UR - https://doi.org/10.1186/s13058-015-0647-3 DO - 10.1186/s13058-015-0647-3 ID - Ennour-Idrissi2015 ER -