Sökning: "pubertal development"

Visar resultat 21 - 25 av 38 avhandlingar innehållade orden pubertal development.

1. 21. Paracrine regulation of Sertoli cell proliferation

   Författare :Cecilia Petersen; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Testis; Sertoli cell; proliferation; growth factor; proinflammatory cytokine;

   Sammanfattning : The Sertoli cell is a highly differentiated somatic cell in the seminiferous epithelium of the testis. This cell is of prime importance for both testicular development and spermatogenesis. LÄS MER

3. 22. Bone mass in the young athlete

   Författare :Ulrika Pettersson; Ronny Lorentzon; Olle Svensson; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bone mass; bone area; physical activity; muscle strength; body constitution; amenorrhea; puberty; adolescents; young aduts;

   Sammanfattning : Bone mass and bone size accumulate during childhood and adolescence and peak in the twenties. The obtained peak bone mass has been suggested to be a major determinant of bone mass even in the very elderly. LÄS MER

4. 23. Validity and reliability of a submaximal cycle ergometer test for estimation of maximal oxygen uptake

   Författare :Frida Maria Eleonora Björkman; Örjan Ekblom; Tony Bohman; Åsa Tornberg; Gymnastik- och idrottshögskolan; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicin Teknik; Medicine Technology;

   Sammanfattning : Maximal oxygen uptake (VO2max) is the highest obtained rate of oxygen consumption during a physically intense dynamic whole-body activity. VO2max is an important factor for many types of physical performance, as well as a strong independent predictor of health and longevity. LÄS MER

5. 24. Adolescents in a Digital Everyday Environment

   Författare :Jonas Hallberg; Högskolan Väst; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Adolescence; Internet; Romantic and sexual activity; parental attitudes; offline; online; Barn- och ungdomsvetenskap; Child and Youth studies; Psychology; Psykologi; Adolescence Internet Romantic and sexual activity parental attitudes offline online;

   Sammanfattning : The overall aim of this thesis is to examine different aspects of Swedish adolescents’ everyday environment in a digital world. Drawing on ecological and psychosocial developmental theories I will discuss social, sexual, and biological aspects of the Internet as an everyday environment, an environment in which most adolescents spend a great deal of time. LÄS MER

7. 25. Magnetic resonance imaging and advanced imaging assessment of the growth plate in the adolescent and young adult

   Författare :Ola Kvist; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : The growth plate is a cartilaginous structure located between the metaphysis and epiphysis in long bones. It is the centre for longitudinal growth. Longitudinal growth has a biphasic pattern with a peak during foetal and early postnatal life and another peak during puberty. LÄS MER