2004, Thomas Reilly, Dave Richardson, Gareth Stratton, & A. Mark Williams, Youth Soccer: From Science to Performance, Routledge (2004), ISBN 0415286611, page 65:There are links between nutrition, eumenorrhoea and bone health, which in extreme cases are referred to as the 'female athlete triad'.
2007, Cathy Zanker & Karen Hind, "The Effect of Energy Balance on Endocrine Function and Bone Health in Youth", in Optimizing Bone Mass and Strength: The Role of Physical Activity and Nutrition during Growth (eds. R. M. Daly & M. A. Petit), Karger (2007), ISBN 9783805582759, page 93:Indeed, the first comparative studies of bone turnover in runners with amenorrhoea or eumenorrhoea and untrained controls demonstrated reduced bone formation, ...
2008, Ouj Umeora & Ve Egwuatu, "Age at Menarche and the Menstrual Pattern of Igbo Women of Southeast Nigeria", African Journal of Reproductive Health, Volume 12, Number 1, April 2008:For many women, regular menstruation or eumenorrhoea demonstrates feminity and assures fertility, while for some others, it is an unwelcome event
