Related Experiment Videos
Prevalence of osteopenia among sedentary young women
1Department of Sport Sciences, University of Guilan, Rasht, Iran. nasim_habibzadeh@yahoo.com
Abstract:
The purpose of this study was evaluating prevalence of osteopenia in young women.40 young untrained women between the age of 20-25 years (obese n = 20, BMI > 30 and thin n = 20, BMI < 20) volunteered to participate in this study. Bone mass density (BMD), percentage body fat and lean mass (g/cm2) were measured with the dual X-ray absorptiometry scans (DEXA). Student's t-test was used for determining the amount of bone normalizing among subjects. The study finding showed that 20% of obese and 65% of thin women had osteopenia and thin groups 3.2% more than obese groups were at risk of bone loss. These findings will help educate the medical community and the public about the importance of prevention--targeting young women who are at risk while they still have time to change their habits and improve their bone health.
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...
Osteoclasts in Bone Remodeling
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
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
Essential Minerals for Bone Health
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...