scispace - formally typeset
Search or ask a question
Topic

Pubic hair

About: Pubic hair is a research topic. Over the lifetime, 565 publications have been published within this topic receiving 23316 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: Mixed longitudinal data on the physical changes at puberty in 228 normal boys are presented together with normal standards for stages of genital and pubic hair development, finding that boys' genitalia begin to develop only about 6 months later than the girls' breasts and Pubic hair appears about 1½ years later in boys than in girls.
Abstract: Mixed longitudinal data on the physical changes at puberty in 228 normal boys are presented together with normal standards for stages of genital and pubic hair development. The genitalia began to develop between the ages 9½ years and 13½ years in 95% of boys (mean = 11.6 ± 0.09) and reached maturity at ages varying between 13 and 17 (mean = 14.9 ± 1.10). The age at which pubic hair first appeared was not accurately determined, but its development through the later stages was studied. It reached the equivalent of an adult female distribution at a mean age of 15.2 ± 0.01 years. On average the genitalia reached the adult stage 3.0 years after they first began to develop; but some boys completed this development in as little as 1.8 years while others took as much as 4.7 years. Some boys complete the whole process in less time than others take to go from Stage G2 to Stage G3. The genitalia begin to develop before pubic hair is visible in photographs in practically all boys. The 41 boys in whom it could be studied reached their maximum rate of growth (peak height velocity) at a mean age of 14.1 ± 0.14 years. Very few boys (about 5%) reached peak height velocity before their genitalia were in Stage 4 and over 20% did not do so until their genitalia were adult. Peak height velocity is reached, on the average, nearly 2 years later in boys than in girls, but the boys9 genitalia begin to develop only about 6 months later than the girls9 breasts. Pubic hair appears about 1½ years later in boys than in girls.

4,543 citations

Journal ArticleDOI
TL;DR: New charts for height, weight, height velocity, and weight velocity are presented for clinical (as opposed to population survey) use, based on longitudinal-type growth curves, using the same data as in the British 1965 growth standards.
Abstract: New charts for height, weight, height velocity, and weight velocity are presented for clinical (as opposed to population survey) use. They are based on longitudinal-type growth curves, using the same data as in the British 1965 growth standards. In the velocity standards centiles are given for children who are early- and late-maturing as well as for those who mature at the average age (thus extending the use of the previous charts). Limits of normality for the age of occurrence of the adolescent growth spurt are given and also for the successive stages of penis, testes, and pubic hair development in boys, and for stages of breast and pubic hair development in girls.

2,990 citations

Journal ArticleDOI
TL;DR: Drawings were made from Tanner's photographs illustrating five stages of development each for male genitalia, testicular size, male pubic hair, female breasts, and female pubichair, and Answers to questions concerning amount of underarm hair and general development yielded high correlations.
Abstract: Drawings were made from Tanner's photographs illustrating five stages of development each for male genitalia, testicular size, male pubic hair, female breasts, and female pubic hair. Forty-seven females and forty-eight males aged 12–16 years indicated on questionnaires which stage they were most like, and answered other questions related to their physical development. Afterwards they were examined by physicians who had not seen their answers. Pearson correlation coefficients were 0.6 or above for the physician's observations compared with the adolescents' answers for the drawings, with the exception of testicular size. Answers to questions concerning amount of underarm hair and general development also yielded high correlations.

932 citations

Journal ArticleDOI
TL;DR: This study suggests the feasibility of self-assessment of sexual maturity ratings among black, white, and Hispanic adolescent females, but the need for further research before it is used among adolescent males.
Abstract: The variability in time on onset and progression of puberty warrants the use of stage of sexual maturation rather than chronologic age in assessing biological and behavioral measures during adolescence. The necessity to undress the teenage has seriously curtailed the application of stage of sexual maturation to behavioral and developmental research. This study demonstrated that adolescents can accurately assess their own developmental stage according to Tanner's standard photographs. Self-ratings by 43 females, aged 9 to 17, and 23 males, 11 to 18, were compared to those based on physical examination by one of the investigators. Agreement with the physician rating occurred for breast stage in 37/43, for female pubic hair stage in 40/43, and for male combined pubic hair and genital stage in 21/23 (kappa coefficients: 0.81, 0.91, 0.88). The excellent agreement between physician and adolescent's assessment compared favorably with the interrater agreement of professionals. This study suggests the value of utilizing adolescent self-staging in research. In addition, this exercise provides teenagers with an objective way to understand the wide range of normal pubertal development and to follow their own sexual maturation.

799 citations

Journal ArticleDOI
TL;DR: Results are consistent with obesity's being an important contributing factor to the earlier onset of puberty in girls, and a multivariate analysis confirms that obesity (as measured by BMI) is significantly associated with early puberty in white girls and is associated withEarly puberty in black girls as well, but to a lesser extent.
Abstract: Objective. A recent study conducted by the Pediatric Research in Office Settings network provided evidence that girls in the United States, especially black girls, are starting puberty at a younger age than earlier studies had found, but the reasons for this are not known. Because nutritional status is known to affect timing of puberty and there is a clear trend for increasing obesity in US children during the past 25 years, it was hypothesized that the earlier onset of puberty could be attributable to the increasing prevalence of obesity in young girls. Therefore, the objective of this study was to reexamine the Pediatric Research in Office Settings puberty data by comparing the age-normalized body mass index (BMI-ZS; a crude estimate of fatness) of girls who had breast or pubic hair development versus those who were still prepubertal, looking at the effects of age and race. Results. For white girls, the BMI-ZS were markedly higher in pubertal versus prepubertal 6- to 9-year-olds; for black girls, a smaller difference was seen, which was significant only for 9-year-olds. Higher BMI-ZS also were found in girls who had pubic hair but no breast development versus girls who had neither pubic hair nor breast development. A multivariate analysis confirms that obesity (as measured by BMI) is significantly associated with early puberty in white girls and is associated with early puberty in black girls as well, but to a lesser extent. Conclusions. The results are consistent with obesity9s being an important contributing factor to the earlier onset of puberty in girls. Factors other than obesity, however, perhaps genetic and/or environmental ones, are needed to explain the higher prevalence of early puberty in black versus white girls.

698 citations


Network Information
Related Topics (5)
Overweight
55.8K papers, 2M citations
71% related
Obesity
31.4K papers, 1.4M citations
70% related
Body mass index
73K papers, 2.9M citations
69% related
Pregnancy
163.9K papers, 4M citations
68% related
Estrogen
40.7K papers, 1.7M citations
68% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202322
202255
202111
202021
201919
201818