Hello losers! I'm currently close to my goal weight finishing line. Which makes any weight fluctuations particularly annoying. Did a search today since I'm ovulating and I found this interesting piece of research from 2011:
Fluid Retention over the Menstrual Cycle: 1-Year Data from the Prospective Ovulation Cohort
The parts I've found most interesting are:
In previous work from this laboratory we have shown that increasing exercise training decreases fluid retention within ovulatory cycles
The overall temporal patterns were similar, but, contrary to our initial hypothesis, fluid retention/bloating scores for runners (n = 39) were consistently higher than those for normally active women (n = 23).
Our observation that fluid retention peaked on the first day of flow, rather than prior to flow, is in apparent contradiction to established knowledge suggesting that “bloating” is premenstrual.
We did not expect to find higher fluid retention in recreational runners than in normally active women. Prospective studies from this laboratory have shown decreases in fluid retention with increasing exercise in both sedentary women [17] and in fit women who increased their training in preparation for a marathon [11]. Sedentary women just starting exercise showed the largest decreases in fluid retention. A rebound increase in fluid retention with decreasing exercise, however, has been reported in the exercise literature [18]. Although this was a prospective study, the comparison between runners and nonrunners was cross-sectional and women self-selected their activity patterns. One possible explanation for our apparently contradictory finding of greater fluid retention in runners may be that running allows women to control otherwise troublesome premenstrual symptoms including fluid retention, and so women with more symptoms may be motivated to start or to continue running. Another is that runners may have consumed more liquids because of thirst due to exercise-related fluid losses and thus had more nocturia (a component of instructions to women on scoring fluid retention). Finally, with more intense exercise, hypothalamic temperature increases and higher levels of oxytocin, vasopressin, and other neurotransmitters are released [19]. These physiological changes could lead to fluid retention that was greater in runners than in normally active women.
Study was done on healthy, non-smoking women with BMI of between 17 to 27. So if you have irregular periods, have PCOS and such this will probably not be as useful. Hope this helps someone!
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