Connective Tissue & Female Hormone QUESTION

[liveonearth]

K told me (and it seems that it is well known) that women are more likely to strain their tendons and ligaments immediately before their periods, that is, during the end of the luteal phase when progesterone and estrogen from the corupus luteum are declining and near (or at) their nadir, and FSH and LH are low as well. So, can anyone explain to me what the relationship is between the female cycle, hormones and connective tissue?

Thanks in advance.