Related Experiment Videos
Risk factors for osteoporosis among middle-aged women
Lori W Turner1, Lorraine Silver Wallace, Blake Allen Perry
1Department of Health Science, Kinesiology, Recreation and Dance, University of Arkansas, 309 HPER Building, Fayetteville, AR 72701, USA. lori@uark.edu
Objective:
To investigate the risk factors for osteoporosis among a sample of middle-aged women.
Methods:
Adipose tissue and bone mineral density levels at the left femur, lumbar spine, and total body were assessed using dual-energy x-ray absorptiometry (DXA). Subjects (n=342) were surveyed regarding a variety of osteoporosis-related risk factors. Forward stepwise multiple regression procedures were utilized.
Results:
Menstrual status, hormone replacement therapy, adipose tissue, and dairy product intake were retained in the regression models.
Conclusions:
Osteoporosis prevention programs need to emphasize the importance of hormonal status and body composition in addition to obtaining adequate calcium intake.
Related Concept Videos
Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Role of Vitamins in Maintaining Bone Health
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Bone Remodeling
Menopause
The Effect of Aging on Tissues
Oogenesis