scholarly journals Geographic Differences for Delay of Sexual Maturation in Peromyscus Leucopus: Effects of Photoperiod, Pinealectomy, and Melatonin1

1989 ◽  
Vol 41 (6) ◽  
pp. 1004-1013 ◽  
Author(s):  
Linda L. Carlson ◽  
Annemarie Lmmermann ◽  
G. Robert Lynch
Keyword(s):  
Sexual Maturation ◽  
Peromyscus Leucopus ◽  
Geographic Differences

Validity of puberty self-report in children and adolescents in Ho Chi Minh City

MedPharmRes ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 33-37
Author(s):  
Tam M. Do ◽  
Thanh K. Van ◽  
Huyen TT. Bich ◽  
Thanh TK. Tran ◽  
Minh X. Ngo ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Sexual Maturation ◽  
Kappa Statistic ◽  
Community Context ◽  
Self Report ◽  
Ho Chi Minh City ◽  
Pubertal Stage ◽  
Perfect Agreement ◽  
Kendall’S Τ ◽  
High Concordance

Background: Puberty is a milestone in child and adolescent development, yet a feasible tool to accurately assess pubertal stage in community context has not been validated in Vietnam. Aim: This study was conducted to validate pubertal self-report among Ho Chi Minh City children and adolescents in comparison with paediatrician’s assessment. Methods: 80 girls and 76 boys aged from 6 to 17 years old from 5 schools in Ho Chi Minh City were recruited. Self-administered questionnaires about sexual maturation were distributed to participants and results were compared with physician’s pubertal examination. Kappa statistic and Kendall’s τ b were used to evaluate validity of the questionnaire. Results: Boys tended to overestimate their development stages while girls tended to underestimate. Fair to almost perfect agreement between students’ reports and paediatricians’ evaluation, along with high concordance was recorded, however younger boys (aged 6-11) showed limited evaluation of their own sexual maturation. Conclusion: This method was inaccurate to evaluate younger boys’ sexual maturation; however, acceptable accuracy in sexual maturation estimation among younger girls and adolescents could allow it to serve as an effective screening tool in community context.

Comparison between objective assessment and self-assessment of sexual maturation in children and adolescents

2009 ◽  
Vol 0 (0) ◽  
Author(s):  
Jenner C. V. Azevedo ◽  
Lana M. P. Brasil ◽  
Taísa B. M. A. Macedo ◽  
Lúcia F. C. Pedrosa ◽  
Ricardo F. Arrais
Keyword(s):  
Children And Adolescents ◽  
Sexual Maturation ◽  
Objective Assessment ◽  
Self Assessment

Impulsivity in Adolescents

2012 ◽  
Author(s):  
Elizabeth K. Reynolds ◽  
Linda C. Mayes
Keyword(s):  
Sexual Maturation ◽  
Central Place ◽  
Self Report ◽  
Future Directions ◽  
Multidimensional Construct ◽  
Normal Behavior ◽  
Problematic Behaviors ◽  
Behavioral Tasks ◽  
Developmental Course

Adolescence is the time between the beginning of sexual maturation and adulthood, typically bounded by the ages of 13 to 19 years. One construct that holds a central place in many theories of development and psychopathology is impulsivity. Impulsivity has been considered to play an important role in normal behavior as well as linked to several problematic behaviors that are present or arise during adolescence. Impulsivity, considered to be a multidimensional construct, has been defined and measured in a variety of ways. This chapter will discuss the definitions of impulsivity, measurement (including self-report and behavioral tasks), developmental course, behaviors and disorders in which it is implicated, and future directions.

scholarly journals The Role of Fetal, Infant, and Childhood Nutrition in the Timing of Sexual Maturation

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 419
Author(s):  
Valeria Calcaterra ◽  
Hellas Cena ◽  
Corrado Regalbuto ◽  
Federica Vinci ◽  
Debora Porri ◽  
...  
Keyword(s):  
Sexual Maturation ◽  
Pubertal Development ◽  
Endocrine System ◽  
Metabolic Adaptation ◽  
Fetal Life ◽  
Critical Periods ◽  
Important Indicator ◽  
Prenatal Growth ◽  
Adaptation Response ◽  
Healthy Growth

Puberty is a crucial developmental stage in the life span, necessary to achieve reproductive and somatic maturity. Timing of puberty is modulated by and responds to central neurotransmitters, hormones, and environmental factors leading to hypothalamic-pituitary-gonadal axis maturation. The connection between hormones and nutrition during critical periods of growth, like fetal life or infancy, is fundamental for metabolic adaptation response and pubertal development control and prediction. Since birth weight is an important indicator of growth estimation during fetal life, restricted prenatal growth, such as intrauterine growth restriction (IUGR) and small for gestational age (SGA), may impact endocrine system, affecting pubertal development. Successively, lactation along with early life optimal nutrition during infancy and childhood may be important in order to set up timing of sexual maturation and provide successful reproduction at a later time. Sexual maturation and healthy growth are also influenced by nutrition requirements and diet composition. Early nutritional surveillance and monitoring of pubertal development is recommended in all children, particularly in those at risk, such as the ones born SGA and/or IUGR, as well as in the case of sudden weight gain during infancy. Adequate macro and micronutrient intake is essential for healthy growth and sexual maturity.

Body phenotypes and sexual maturation in Brazilian and US adolescents: evidence for a change in body mass index Category

2020 ◽  
pp. 1-26
Author(s):  
Jéssica Cumpian Silva ◽  
Ana Elisa Madalena Rinaldi ◽  
Francisco de Assis Guedes Vasconcelos ◽  
Maria Alice Altenburg Assis ◽  
Camila Medeiros Mazzeti ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Composition ◽  
Body Mass ◽  
Phase Angle ◽  
Sexual Maturation ◽  
Biochemical Parameters ◽  
Pubertal Development ◽  
The United States ◽  
Pubic Hair ◽  
Cholesterol Ratio

ABSTRACT Objective: Our study aimed to describe body phenotypes (BP) estimated by multivariate analysis and their association with body mass. Design: Body phenotypes were defined based on demographic variables, anthropometric data (body mass, height, skinfolds and circumferences), body composition (phase angle measured by bioelectrical impedance analysis), biochemical parameters (triglycerides, glucose, total cholesterol ratio/Low Density Lipoproteins (LDL), haemoglobin and sexual maturation (pubic hair and breasts or gonads). Analysis of variance (ANOVA) was performed to verify the differences between skin colour and the stages of pubertal development, body phenotypes, body composition, anthropometric, and biochemical variables. Setting: Cities of São Paulo-SP, Piracicaba-SP and Florianópolis-SC from Brazil and the United States. Participants: 9269 adolescents aged between 10 to 15 years old. Results: The composition of BP was similar in all surveys, which are: BP1 was composed by skinfolds, body mass and circumferences variables; BP2 by pubic hair, breast in girls or gonad in boys, height and age; BP3 by cholesterol, triglycerides and glucose; and BP4 by phase angle, haemoglobin and glucose (negative loading). There was a strong correlation (r = 0.9, p <0.001) between BP1 and body mass index. Conclusion: We highlighted independence observed between biochemical parameters, anthropometry, body composition and sexual maturation. BP may support the calculation of scores for diagnosis of obesity based on anthropometric variables and overcome ambiguity in the isolated use of body mass index.

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