Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Pubertal development in Swiss boys.

R H Largo, A Prader

Helvetica Paediatrica Acta

|August 1, 1983

Summary

This summary is machine-generated.

Pubertal development onset in males is reliably indicated by testicular volume reaching 3 ml. Pubertal stages occurred earlier than previously reported, with significant variation in timing and duration.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Archives of gynecology and obstetrics·2016

Same author

For the development of the chorda dorsalis of humans.

Bulletin d'histologie appliquee a la physiologie et a la pathologie et de technique microscopique·2010

Same author

The early bryonic development of the human intervertebral disc.

Acta anatomica·2010

Same author

Correlations between motor performance and cognitive functions in children born < 1250 g at school age.

Neuropediatrics·2006

Same author

Coordination training in individuals with incomplete spinal cord injury: consideration of motor hierarchical structures.

Spinal cord·2005

Same author

TW3 bone age: RUS/CB and gender differences of percentiles for score and score increments.

Annals of human biology·2004

Same journal

Successful treatment of a very severe tetanus; Multiple vertebral fractures as a result of tetanus.

Helvetica paediatrica acta·2010

Same journal

The little finger says "Infantile", sign of Du Bois.

Helvetica paediatrica acta·2010

Same journal

Late improvement of a case of congenital athyroid dwarfism with intrasellar alteration; Clinical and genealogical study.

Helvetica paediatrica acta·2010

Same journal

Diagnostics and basics of therapy for childhood brain tumors.

Helvetica paediatrica acta·2010

Same journal

Studies on redox therapy for pertussis.

Helvetica paediatrica acta·2010

Same journal

On a rare complication of epidemic mumps.

Helvetica paediatrica acta·2010

See all related articles

Area of Science:

Pediatrics
Endocrinology
Human Development

Background:

Longitudinal studies are crucial for understanding typical pubertal development trajectories.
Variations in pubertal timing can impact psychosocial well-being and require accurate normative data.

Purpose of the Study:

To document the timing and duration of pubertal development in Swiss males.
To identify reliable indicators for the onset of puberty.
To compare observed pubertal progression with previously reported data.

Main Methods:

Longitudinal assessment of 142 Swiss males aged 8-18 years.
Tanner staging for genital and pubic hair development.
Prader orchiometer for testicular volume assessment.

Related Experiment Videos

Main Results:

Testicular volume of 3 ml reliably indicated pubertal onset.
Pubertal stages, particularly PH6, occurred earlier than previously reported.
Significant individual variation in pubertal timing (SD 1.0-1.5 years).
Mean durations: genital development (3.5±1.1 yrs), testicular growth (3.5±1.0 yrs), pubic hair (2.7±1.0 yrs).
High correlation between completion ages of pubertal characters and peak growth spurt.
High synchrony between different pubertal characteristics (e.g., 87% in G2/G3 when reaching PH2).

Conclusions:

Testicular volume is a key indicator for initiating pubertal development assessment.
Observed earlier pubertal progression necessitates updated normative data.
Pubertal development exhibits significant individual variability but high synchrony between different characteristics.