Elderly women in northern New England exhibit seasonal changes in bone mineral density and calciotropic hormones.
A seasonal component to bone loss has been reported in some postmenopausal women.
We hypothesized that elderly women in northern New England would be at high risk for bone loss during winter because of their age, diet and lack of sunlight.
Eighteen elderly but healthy women (mean age 77 years) started a 2-year observational study in a remote area of northwestern Maine (Greenville : 45.5oN latitude).
Fifteen women completed the study.
Bone mineral density of the spine (L-BMD) and hip (F-BMD) and biochemical markers of bone turnover were measured biannually.
In vitro photo-conversion of provitamin D3 to previtamin D3 was determined in the winter and spring.
Mots-clés Pascal : Vieillard, Homme, Femelle, Densité, Elément minéral, Os, Variation saisonnière, Postménopause, Etats Unis, Amérique du Nord, Amérique, Vitamine D, Hormone parathyroïdienne, Squelette, Système ostéoarticulaire
Mots-clés Pascal anglais : Elderly, Human, Female, Density, Inorganic element, Bone, Seasonal variation, Postmenopause, United States, North America, America, Vitamin D, Parathyroid hormone, Skeleton, Osteoarticular system
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0586850
Code Inist : 002A23A. Création : 09/06/1995.