Understanding the regulation of pubertal timing has relevance to developmental and human biology, and to the pathogenesis of various diseases. Recent large-scale genome-wide association studies for puberty timing and adult height, body mass index (BMI) and central body shape provide evidence for shared biological mechanisms that regulate these traits. There is substantial genetic overlap betwee...

OBJECTIVE Identifying and comparinge the physical qualities of Brazilian athletes and practitioners of rhythmic gymnastics. METHODS 125 Brazilian athletes and rhythmic gymnasts practitioners of Rhythmic Gymnastics fromaged 7 to 25 years- old were evaluated. They were divided into the following categories: Different competitive levels (international, national and regional) and pre- and post- m...

BACKGROUND Epidemiological evidence suggests that early menarche, defined as onset of menses at age 11 or earlier, has increased in prevalence in recent birth cohorts and is associated with multiple poor medical and mental health outcomes in adulthood. There is evidence that childhood adversities occurring prior to menarche contribute to early menarche. METHODS Data collected in face-to-face ...

This cross-sectional study was carried out on 2246 girls born between 1985 and 1989 to determine the age of menarche in Mazandaran province, northern Islamic Republic of Iran. Six cities were selected randomly and cluster sampling used to select high-school students in urban and rural areas. Students with malnutrition, anaemia and chronic infections such as tuberculosis were excluded. The mean ...

This study examines trends in menarcheal age of women born in China between 1950 and 1973, and explores the impact of relevant social background characteristics on the timing of first menarche. Data on recalled ages of menarche collected in the 1988 Chinese Two-per-Thousand Fertility Survey are used in a linear regression model where the covariates are transformed with the help of an Alternatin...

STUDY OBJECTIVE The aim of the study was to investigate the impact of reproductive variables (age at menarche, menopause, first and last birth as well as parity, lactation, and abortions) on hip fracture mortality. DESIGN AND SETTING A prospective study in Norway with more than 60,000 women followed up for 29 years. A total of 465 deaths as a result of hip fracture were recorded. MAIN RESUL...

The gonadal function of patients with Turner syndrome (TS) is variable. Individuals with mosaicism characterized by 45,X/46,XX or 45,X/47,XXX are more likely to experience spontaneous menarche compared with other karyotypes. Prepubertal gonadotropins of TS patients with spontaneous menarche are reportedly normal or significantly lower than those of patients with induced menarche. The present st...

Background: menarche is one of the most significant milestones in a woman’s life with nutritional status being one of the important non genetic determinants of menarcheal age. Objective: to determine the relationship between age at menarche and anthropometric measurements among adolescent secondary school girls in Port Harcourt, Nigeria. Methods: four hundred and seventy nine adolescent girls w...

AIM To identify reproductive disturbances among adolescent girls and young women with type 1 diabetes mellitus (T1DM) in Saudi Arabia. METHODS This cross sectional study was conducted among 102 female with T1DM, (aged 13-29 years) who attended the Diabetes Clinic at Diabetes Treatment Center, Prince Sultan Military Medical City, Saudi Arabia between April 2015 to March 2016. Clinical history,...

Department of Science, Ayesha Sadeeqa Post Graduates Girls College, Rajanpur; Pakistan E-mail: [email protected] [email protected] Tel.: +92 3330683844 Adolescent girls when face bleeding from vagina for the first time; is known as menarche that influence lateral life. This review summarizes the findings of important associated environmental factors and reasons in determining the secular tr...