Results 21 to 30 of about 48,845 (227)

Knowledge of peri-menarcheal changes and a comparative analysis of the age at menarche among young adolescent school girls in urban and rural Cameroon

BMC Public Health, 2020
Background Menarche is an expected event that occurs during the development of every normal young girl. We designed this study to evaluate the knowledge of young school girls on puberty, menarche, and menstruation, and to update data on the age at ...
Atem Bethel Ajong, Nkengazem Nerry Tankala, Martin Ndinakie Yakum, Ikei Solange Azenoi, Bruno Kenfack   +4 more
doaj   +1 more source

Inhibition of IGFBP4 in Granulosa Cells Improves Reproductive Performance and Maintains Fertility With Age via YAP Signaling

Advanced Science, EarlyView.
IGFBP4 is upregulated in granulosa cells of aged ovaries across monkeys, mice, and humans. It inhibits YAP signaling, thereby suppressing cell proliferation and contributing to follicular dysfunction. Deletion of Igfbp4 in granulosa cells enhances ovulatory output, improves hormone profiles, and reproductive performance in aged female mice, suggesting ...
Qianhui Hu, Ajun Geng, Ziyuan Li, Fanghao Guo, Jingqiang Wang, Xinyi Chen, Meiling Zhang, Yi Arial Zeng, Wen Li   +8 more
wiley   +1 more source

Age at menarche and its association with preschool BMI among girls in Northern Norway.

PLoS ONE
BackgroundA decreasing age of menarche has been reported across the Western world. Early menarche is associated with unfavorable health outcomes.AimThe aims of this study were to describe the age at menarche in a general population sample in Norway and ...
Henrik Lykke Joakimsen, Astrid Brendlien, Anne-Sofie Furberg, Christopher Sivert Nielsen, Guri Grimnes, Elin Kristin Evensen   +5 more
doaj   +1 more source

Over the edge: Empirical evidence for the cliff‐edge model of obstetric selection

The Anatomical Record, EarlyView.
Abstract The cliff‐edge model of obstetric selection maintains that larger neonates and smaller birth canals confer a positive selective advantage until labor becomes obstructed and vaginal delivery is no longer possible, eliciting an abrupt reduction in fitness.
Laura M. Watson, Pierre Frémondière, Kaspar Staub, Philipp Mitteroecker, Barbara Fischer, Martin Haeusler, Nicole M. Webb   +6 more
wiley   +1 more source

Hubungan Status Gizi dan Aktivitas Fisik dengan Menarche Dini pada Anak Sekolah Dasar di Surakarta

Sari Pediatri
Latar belakang. Usia menarche bagi seorang anak perempuan sangat penting karena hal ini dapat menjadi prediksi kesehatan pada saat dewasa. Seiring berjalannya waktu, usia menarche secara signifikan semakin dini.
Pramudya Dwi Andieny, Ika Sumiyarsi Sukamto, Atriany Nilam Sari, Evi Rokhayati, Iffah Indri Kusmawati   +4 more
doaj   +1 more source

Pelvic morphology and body size in relation to the preauricular sulcus: Evidence from medieval to modern Iberia

The Anatomical Record, EarlyView.
Abstract The preauricular sulcus has long been debated as a pelvic feature variably attributed to obstetric stress, ligamentous traction, and broader biomechanical processes. To clarify its determinants, we analyzed 409 adult individuals from three archeological and one early modern skeletal collection from the Iberian Peninsula, integrating graded ...
Rebeca García‐González, Julia Muñoz‐Guarinos, Nico Cirotto, Sonia Díaz‐Navarro, Laura Rodríguez, José Miguel Carretero   +5 more
wiley   +1 more source

Maternal time interval between menarche and childbirth is associated with daughter's age at menarche

Acta Obstetricia et Gynecologica Scandinavica
Introduction Women's reproductive lifespan has increased over the past two decades. Simultaneously, female reproductive behavior has changed, with increasing age at first birth.
Mari Landås Warp, Thea Grindstad, Karoline H. Skåra, Maria C. Magnus, Siri E. Håberg, Nils‐Halvdan Morken, Liv Bente Romundstad, Cecilia H. Ramlau‐Hansen, Hans Ivar Hanevik   +8 more
doaj   +1 more source

Status Gizi, Aktivitas Fisik, dan Usia Menarche Remaja Putri

Jurnal Keperawatan Indonesia, 2013
Saat ini usia menarche remaja putri di Indonesia lebih cepat dibanding beberapa waktu lalu, hal tersebut dapat dipengaruhi berbagai faktor. Penelitian ini bertujuan mengetahui hubungan status gizi dan aktivitas fisik dengan usia menarche.
Septiana Wulandari, Titin Ungsianik
doaj   +1 more source

Developmental differences in cortical bone structure in chimpanzee and human femora reflect early locomotor independence in humans

The Anatomical Record, EarlyView.
Abstract The cortical bone structure of long bone diaphyses changes throughout growth via skeletal modeling and has important implications for bone strength and structural integrity. Ontogenetic trends in diaphyseal structure have been identified in both chimpanzees and humans but it is not yet clear how these trends compare given notable differences ...
Karen R. Swan, Rachel Ives, Zewdi J. Tsegai, Louise T. Humphrey   +3 more
wiley   +1 more source

Relationship of age at menarche on anthropometric index and menstrual irregularity in late adolescent girls in Seoul [PDF]

Annals of Pediatric Endocrinology & Metabolism, 2013
PurposeTo examine the relationship between menarcheal age and anthropometric indices and menstrual irregularity in late adolescent girls in Seoul.MethodsWe surveyed 4,218 fertile adolescent girls between the ages of 16 and 18 years to determine their ...
Seung Eun Lee, Joo Yun Yang, Ji Hyun Lee, Han Wool Kim, Hae Soon Kim, Hye Jin Lee, Ji Young Oh, Yeon Ah Sung   +7 more
doaj   +1 more source