Zusammenfassung Der Zeitpunkt des Pubertätsbeginns ist von Kind zu verschieden. Es zeigen sich familiäre und ethnische Merkmale sowie ein säkularer Trend, welche dem zeitlichen Aspekt einen gewissen Rahmen verleihen. Dennoch der Schritt in die Pubertät im einzelnen nicht so leicht vorherzusagen, da viele individuelle endogene exogene Elemente Einfluss haben. Wie große zeitliche Variabilität erk...

OBJECTIVE The prevalence of asthma is rising, presenting serious public health challenges. Recent data suggest that sugar-sweetened beverage (SSB) consumption plays a role in asthma aetiology. The purpose of the present study was to determine whether SSB consumption is linked to post-exercise airway narrowing (predictor of asthma development) across puberty. DESIGN Participants completed pulm...

BACKGROUND Back pain is a common condition that starts early in life and seems to increase markedly during puberty. A systematic review was performed in order to investigate the link between puberty and back pain, using some Bradford Hill criteria for causality. OBJECTIVES We sought to obtain answers to the following questions: 1) Is there an association between puberty and back pain? If so, ...

In the infantile animal the reproductive organs gradually develop but do not begin to function as organs of reproduction until the age of puberty, although their internal secretions begin before this time. In the female the cause for their functioning lies outside the ovary itself, for immature ovaries transplanted into adults begin to function immediately, whereas adult ovaries transplanted in...

Many important changes occur throughout reproductive development in beef heifers, including during the prenatal, early postnatal, and peripubertal periods. Wave-like patterns of follicular development have been observed in heifer calves as early as 2 wk of age. Some dramatic changes occur from about 2 to 5 mo of age, most notably the transient increase in LH secretion. Most components of the hy...

The objective of this study was to determine if biostimulation of prepuberal beef heifers by mature bulls would alter proportions of heifers exhibiting puberty, or age or weight at puberty. Angus (A), A X Hereford (H) and Tarentaise X HA heifers (n = 103) were stratified by age and weight within breed-type and location of birth and allotted randomly to the following treatments: 1) heifers expos...

The process of pubertal development and the factors affecting it are only partly understood even today. Owing to the rising epidemic of childhood obesity, there have been a number of studies investigating the role of body composition, and the rate and timing of puberty. There is evidence now that increased height and body mass index (BMI) of children, prior to puberty, result in an earlier onse...