The Relationship of the Post-Ovulatory Phase of The Menstrual Cycle to Total Cycle Length
- 1 April 1970
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Biosocial Science
- Vol. 2 (2) , 123-132
- https://doi.org/10.1017/s0021932000007562
Abstract
Summary The basal body temperature was recorded by 1353 healthy fertile women aged 18 to 49 years inclusive through 12,247 cycles. The post-ovulatory (hyperthermic) phase of the cycle was significantly longer by 1·31 days in cycles with a slow or staircase rise of temperature than in cycles with an acute rise. The hyperthermic phase increased in length in a rectilinear fashion from 10 to 13 days as the total cycle length rose from 22 to 29 days; over total cycle lengths from 29 to 33 days the length of the hyperthermic phase remained around 13 days.Keywords
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