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Age at first conscious ejaculation: a milestone in male puberty
Helvetica Paediatrica Acta
|March 1, 1980
Summary
The first conscious ejaculation in boys typically occurs around a bone age of 13.5 years, regardless of puberty timing or conditions like cryptorchidism. This finding suggests first ejaculation age can indicate male puberty maturation.
Area of Science:
- Pediatrics
- Endocrinology
- Adolescent Medicine
Background:
- Assessing male puberty onset and progression is crucial for identifying developmental issues.
- First conscious ejaculation is a significant pubertal milestone, but its relationship with skeletal maturation requires further investigation.
Purpose of the Study:
- To determine the bone age at which the first conscious ejaculation occurs in boys.
- To evaluate the potential of first ejaculation age as an indicator of pubertal maturation.
Main Methods:
- A cohort of 263 boys was studied, including normal controls, boys with unilateral cryptorchidism, and those with delayed puberty.
- Participants underwent regular physical examinations, and wrist X-rays were performed to assess bone age.
- A control group of 135 schoolboys provided additional data on ejaculation occurrence.
Main Results:
- The mean bone age at first conscious ejaculation was consistently 13.5 years (±0.5 SD) across all groups, including those with delayed puberty.
- Bone age at first ejaculation ranged from 12.5 to 15.5 years.
- No significant correlation was found between the chronological age of first ejaculation and testicular volume, pubic hair, or penis length.
Conclusions:
- The bone age at first conscious ejaculation appears to be a reliable indicator of male pubertal maturation.
- This metric may be useful in clinical settings for assessing pubertal development, even in cases of delayed puberty or cryptorchidism.