View clinical trials related to Bone Microarchitecture.
Filter by:The primary objective of this study is to address critical safety questions with concurrent TDF-based PrEP and DMPA use. We hypothesize that young women using TDF-based PrEP and DMPA will have lower bone acquisition and altered bone metabolism. Bone mineral metabolism is in part regulated by the kidney, and we hypothesize that bone effects from concurrent PrEP and DMPA use will be driven by subclinical kidney injury, a known side effect of TDF, as well as DMPA-induced hypoestrogenism. To investigate our hypothesis, we will enroll a prospective cohort of approximately 500 HIV-uninfected women ages 16-25 years in Kampala, Uganda who have substantial HIV risk and are initiating DMPA or barrier method contraception. Over a 24-month period, we will offer TDF-based PrEP. We will use state-of-the-art radiologic, biochemical, and epidemiologic methods to test the hypothesis that concurrent TDF-based PrEP and DMPA use results in compounding adverse effects on bone health.
After the age of 50, one in three women and one in eight men will experience at least one fragility fracture during the rest of their lives. It is currently recognized that physical activity has an osteogenic actions, especially when it includes the impact transmitted to the skeleton. In this context, the investigators propose a study to determine whether the regular practice of golf could be particularly beneficial for the skeleton, not only in the lower limbs, due to repeated impacts to the ground when it requires sustained walking, but also the upper limbs due to the impacts transmitted by the club at the time of striking the ball, as has been amply demonstrated with racquet sports.