Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 214 for “"puberty"”.
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Considerations Regarding Puberty Assessment Methodology and the Relationship between Undernutrition and Puberty among Adolescents Living in Pakistan
… Conclusions: Integrating self-assessment puberty measures into adolescent research may reveal the interconnectivity of nutrition, health, and well-being. The body of research in this thesis highlights the nutritional vulnerability of adolescents in LMIC as demonstrated by delays in puberty …
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Processes underlying the onset of puberty in males.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1973. M.S.
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Aetiological role of early lifestyle exposures in puberty timing
… evidence from various populations that early puberty timing is associated with higher risks for a wide range of subsequent adverse physical and mental health outcomes. Despite the increasing recognition that rapid growth and obesity during prepubertal childhood may promote earlier puberty, it …
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The Association Between Puberty, Emotional Difficulties, and Sleep Problems
Puberty is a period of developmental maturation that is often characterized by difficulties with sleep and emotion. However, the nature of the relation, if any, between pubertal development and emotional difficulties and sleep problems is unclear. The current three-year longitudinal study aimed to …
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Intrinsic Neuronal Plasticity of Kiss1 Neurons in Mice around Puberty
Puberty is a critical stage in mammalian development, characterized by rapid somatic growth, sexual maturation, and the final maturation of the central nervous system. The timing of puberty is crucial, as initiating it either too early or too late can lead to adverse outcomes. Precocious puberty …
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The hypothalamic-pituitary-testicular axis: studies on delayed puberty and infertility
… during nocturnal sleep. Further progress in puberty was characterized by quantitative and qualitative changes in the pattern of LH secretion resulting from the combined effects of changing frequency of hypothalamic GnRH pulses, of gonadal feedback and possibly other ill-defined central …
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Adapting to Parental Investment Uncertainty? The Role of Personality and Puberty
Early childhood experiences of parental investment uncertainty appear to influence later dating and sexuality in girls. Research has suggested that this relationship is mediated by the timing of pubertal development. This thesis investigated whether personality traits also mediated this …
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How flexible are grammars past puberty? Evidence from Turkish-American returnees
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Environmental factors, pasture composition, growth rate and puberty in growing Thoroughbreds
A rapid growth phase often occurs with the onset of spring in the young horse. This coincides with changes in day length, temperature, and progesterone concentrations. The change in growth, from slow to rapid in young horses has been associated with various forms of developmental orthopedic …
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IDENTIFICATION OF MECHANISMS OF DELAYED PUBERTY ON BONE STRENGTH DEFICITS DURING DEVELOPMENT
… 2002). Bone mass doubles during the onset of puberty and young adulthood (Katzman et al., 1991) with more than 90% of peak bone mass being accrued at the end of second decade of life (Schneider & Wade, 2000). The rate of periosteal expansion is elevated during the pubertal period (Specker et …
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Examining the Associations Between Puberty and Social Reorientation at the Neural Level
Social reorientation theory posits that puberty may facilitate changes in social relationships, such as spending less time with parents and heightened motivation towards peer relationships, by reorienting neural responses to prioritize peer social information. However, limited studies have …
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Association of aromatase (TTTA)n repeat polymorphisms with central precocious puberty in girls.
Objective: Precocious puberty is characterized by early activation of the pituitary gonadal axis. Estrogen is the final key factor to start onset of puberty. The cytochrome P450 19A1 (CYP19A1) gene encodes an aromatase that is responsible for the conversion of androgens to estrogen, which is key …
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Effects of Puberty and Obesity on Central Nervous System Autoimmunity in Experimental Autoimmune Encephalomyelitis
… female preponderance of MS only manifests post-puberty implicating hormonal factors in this biology. Several other MS risk factors including obesity only impact MS risk when experienced post-puberty. The mechanisms of how puberty and obesity enhance MS risk are unknown. This thesis aimed to …
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The Effects of Artificial Photoperiod on Age at Puberty in Fall-born Ewe Lambs
… the effects of an artificial photoperiod on puberty in fall-born ewe lambs. Replicate I was initiated in December 2011 with prepubertal Dorset ewe lambs (n = 44). Replicate II was initiated beginning in December 2012 and included prepubertal Dorset, Suffolk x Dorset and Texel x Dorset ewe …
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Bone growth during puberty and the effects of exercise and calcium on bone mass accrual
Childhood and adolescence are time periods characterised by the rapid growth and development of the skeletal system. The timing and magnitude of skeletal development varies considerably between individuals however, environmental factors may make significant contributions to the variance in bone …
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Development of conduct problems in girls: Testing theoretical models and examining the role of puberty
In an attempt to understand girls' involvement conduct problems, this dissertation first reviews two existing theoretical approaches that provide an explanation for the development of conduct problems. Specifically, the available literature on the development and correlates of conduct problems in …
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Stress, Coping, Mental Health, and Reproductive Health among Adolescent Girls Transitioning through Puberty in Tanzania
… in sub-Saharan Africa must transition through puberty in the context of heightened risk for reproductive tract infections and mental illness. At the same time, girls experience menstrual stigma and a lack of resources to manage menstruation. Although menstruation and other puberty-specific …
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Hormonal regulation of the onset of puberty in purebred and crossbred Holstein and Jersey heifers
… of this study was to determine the onset of puberty by using progesterone profiles and anterior pituitary gonadotropin releasing hormone (GnRH) challenges in purebred and crossbred Holstein and Jersey heifers. In experiment 1, fifty prepubertal heifers by four sire - dam classifications (18 …
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