[Effects of daily consumption of milk powder on menstrual cycles and urine sex hormone concentrations of young XXXX ].

@entity1 @entity1011 @entity12778 @entity53
OBJECTIVE: To observe the effects of daily consumption of milk powder on Healthy young @entity1 , including the effect on menstrual cycles, ovulation time and sex hormone concentrations in morning urine. METHOD: Thirty-two young @entity1 were recruited as subjects and randomly assigned into two groups for a milk powder consumption experiment which lasted three menstrual cycles. The first menstrual cycle is control cycle, the second menstrual cycle is milk-taking cycle. The subjects take milk diluted by 33g or 55g milk powder each day, from the 4th to the 24th day of the second menstrual cycle. The third menstrual cycles is control cycle after milk-taking. During the whole three menstrual cycle, record the length of each menstrual cycle, determine ovulation time by using basal body temperature and oviposit test paper, collect their morning urine samples at specified times (the 4th, 7th, 10th, 13rd, 16th, 19th and 24th day of first and the third menstrual cycle; the 4th, 5th, 6th, 7th, 9th, 12nd, 15th, 18th, 21st and 24th day of the second menstrual cycle), determine the concentrations of @entity53 , @entity12778 and @entity1011 in morning urine samples; draw the curve of the concentration changing over time and calculate the area under the curve to the 24th day. RESULT: In the high-dose group, the mean of the menstrual cycle length are (29.60   3.180) d, (28.87    3.021) d, (29.60    2.995) d, the mean of the ovulation time are (15.47    2.200) d. There was no significant difference in menstrual cycle length and ovulation time among cycles and between groups (P>0.05). Calculate the difference between the first and the second menstrual cycle, and the difference between the two groups. In the high-dose group, the area under the curve of @entity53 concentrations adjusted by @entity1011 are (7160.28   2305.52), (6700.26   2066.67); (6676.24   2573.89); the area under the curve of @entity12778 concentrations corrected by @entity1011 are (51.93   18.80), (44.55   14.62) and (46.49   22.44). In the low-dose group, the area under the curve of @entity53 concentrations adjusted by @entity1011 are (6838.21   2573.89), (6611.33   1648.21) and (5949.24   1437.54)/ The area under the curve of @entity12778 concentrations adjusted by @entity1011 are (49.25   15.68), (48.79   15.61) and (43.45   12.77). There   s no significant difference of the area under the curve among three menstrual cycles and between two groups (P>0.05). CONCLUSION: 21 days    continuous daily consumption of milk powder does not have a significant impact on menstrual cycle, or on the @entity53 / @entity12778 concentrations in morning urine.
