The Relationship of the Post-Ovulatory Phase of The Menstrual Cycle to Total Cycle Length

In: Journal of biosocial science: JBS, Band 2, Heft 2, S. 123-132

Abstract

SummaryThe 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.