Sökning: "peak bone mass"

Visar resultat 11 - 15 av 24 avhandlingar innehållade orden peak bone mass.

1. 11. Bone Metabolism in Men

   Författare :Peter Gillberg; Olof Johnell; Uppsala universitet; []
   Nyckelord :Medical sciences; Male osteoporosis; Bone mineral density; Growth hormone; Insulin-like growth factors; Sex hormones; Growth hormone replacement; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Medicine; medicin;

   Sammanfattning : In this thesis, the importance of the growth hormone (GH)/insulin-like growth factor (IGF) system and sex steroids for male bone metabolism has been investigated, and the effects of continuous low dose GH replacement in GH deficient (GHD) adults. In a population-based sample of men, positive correlations were found between bone mineral density (BMD) and IGF-I, IGF-II, IGF binding protein (IGFBP)-3 and the testosterone/sex hormone binding globulin (SHBG) ratio. LÄS MER

3. 12. Muscle function and physical activity in pre-pubertal school children

   Författare :Susanna Stenevi Lundgren; Ortopedi - klinisk och molekylär osteoporosforskning; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; children; physical activity; exercise; isokinetic muscle strength; vertical jump height; normative; intervention; school transport; DXA; anthropometry; fat mass; lean mass; weight; height; body mass index; girls; boys; pre-pubertal;

   Sammanfattning : Background: Regular participation in physical activity or organized exercise is regarded as one important lifestyle factor that could improve musculoskeletal health, fitness and body composition. For children and adolescents physical activity is important not only in training of the neuromuscular system, coordination and balance, but in a wider perspective, for adopting a lifestyle that possibly reduces the risk of coronary artery disease, obesity, osteoporosis and other contributors to morbidity and mortality in the population. LÄS MER

4. 13. Genetic Variability in Human Bone Phenotypes : The Vitamin D Receptor Gene and the Estrogen Receptor-α Cofactor RIZ Gene

   Författare :Elin Grundberg; Andreas Kindmark; Östen Ljunggren; Helena Brändström; André G. Uitterlinden; Uppsala universitet; []
   Nyckelord :Medicine; Bone mineral density; candidate gene approach; polymorphism; the vitamin D receptor; the estrogen receptor α; RIZ1; cofactor; allelic imbalance; Medicin;

   Sammanfattning : Important candidate genes to human bone phenotypes are those involved in the regulation of hormonal action, such as the vitamin D receptor (VDR) and the estrogen receptor-α (ERα) genes and their cofactors. RIZ1 is a specific ERα cofactor proved to strongly enhance the function of the ERα. LÄS MER

5. 14. Physical activity and the young female skeleton

   Författare :Örnolfur Valdimarsson; Malmö Institutionen för kliniska vetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; muskelsystem; reumatologi; Skelett; Skeleton; muscle system; rheumatology locomotion; Bone mass; Osteoporosis; Young female skeleton; Physical activity;

   Sammanfattning : The aim of this thesis was to identify the influence of calcium, physical activity and detraining on bone mass and bone size in girls and young women. We hypothesised that calcium intake above a specific level does not enhance the accrual of bone mineral, that exercise predominantly influences the skeleton in the early pubertal period and that reduced training is followed by a loss of exercise-induced skeletal benefits. LÄS MER

7. 15. Skeletal Development During the First Three Decades in Life

   Författare :Erik Lindgren; Ortopedi - klinisk och molekylär osteoporosforskning; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Peak bone mass; DXA; PQCT; physical activity; musculoskeletal development;

   Sammanfattning : AbstractBackground: Areal bone mineral density (aBMD) measured by dual-energy X-ray absorptiometry (DXA) is a surrogate estimate of bone strength. The highest value in life is referred to “peak bone mass” (PBM). LÄS MER